Overview, CPU/CHASSIS

Archive-name: sun-hdwr-ref/part1
Posting-Frequency: as revised
Version: $Id: part1,v 1.9 1995/08/27 19:17:40 jwbirdsa Exp $

                       THE SUN HARDWARE REFERENCE
                     compiled by James W. Birdsall
                        (jwbirdsa@picarefy.com)

                                 PART I
                                 ======
                                OVERVIEW
                              CPU/CHASSIS

OVERVIEW
========

   This primary focus of this document is to cover older Sun-badged
hardware in detail sufficient to be useful to buyers and collectors of
used Sun hardware, much of which comes without documentation. Details on
hardware commonly used with Suns, especially hardware specifically
designed for Suns, are also included where available. The focus is
generally on older equipment, since information on newer equipment is
more readily available, from Sun itself if nowhere else. In particular,
no effort is made to keep up with Sun's introduction of new SPARC
models or Mbus modules.

   Note that there is no warranty of any kind on the information in this
document. It has been assembled from a variety of sources of varying
reliability. Efforts have been made to exclude information known to be
incorrect, and to include only information deemed reasonably reliable,
but there is no guarantee on any of it, especially since official Sun
documents occasionally contradict each other.

   This document is copyright (c) 1995 by James W. Birdsall. You may
distribute it freely in unmodified form.

   THIS DOCUMENT IS A WORK IN PROGRESS. I still have a lot of
information which I have not had time to integrate yet. In addition, if
you have documentation for systems or boards not listed here, speak up!
I would really like to get ahold of an *old* Sun Field Engineer's Handbook.
Henry Bryant of Sun's Atlanta office kindly donated one that covers
Sun-3's, 386i's, and Sun-4's, but I'm still looking for an old one that
covers Sun-2's. Even the opportunity to borrow one would be appreciated.

   This document is available via anonymous FTP from ftp.picarefy.com in
/pub/Sun-Hardware-Ref as a .tar.Z, .zip, or individual parts in the
parts directory. It is also available from ftp.netcom.com in
/pub/ru/rubicon/sun.hdwr.ref.

   This document is organized into the following sections:

                             *** PART I ***
OVERVIEW
CPU/CHASSIS
 Sun-1, Sun-2, Sun-3, Sun 386i, Sun-4/SPARC
        General descriptions of the models, including
        processor/fpu/speed, bus, chassis type, OS support, etc.
 Processor Data
        Info on SuperSPARC, microSPARC, etc.

                            *** PART II ***

FAQ
 ROM Monitors
        How to use the ROM monitor built into every Sun (boot
        instructions and other tips).
 Using a Terminal as Console
        Notes on using a serial terminal instead of a Sun framebuffer
        and keyboard.
 Memory Display on Startup
        How much memory a system has.
 Miscellaneous Questions and Answers
 Facts in Search of a Home
 Miscellaneous Pinouts
 SIMM Compatbility Chart

                            *** PART III ***

BOARDS
 crossreference by bus, CPU/motherboard, SPARC modules
        Descriptions of boards by type and part number, including
        pinouts, jumpers, DIP switch settings, and LEDs.

                            *** PART IV ***

BOARDS (cont'd)
 memory, video, SCSI, non-SCSI disk controllers, tape controllers,
 Ethernet, serial/parallel/other commo, floating-point/system
 accelerator, backplanes, other
        Descriptions of boards by type and part number, including
        pinouts, jumpers, DIP switch settings, and LEDs.

                             *** PART V ***

DISKS
 SMD, MFM, ESDI, SCSI
        Descriptions of models commonly used, including jumpers and
        switch settings.
KEYBOARDS
 Types 1-5c
        Descriptions of types of keyboards, what CPUs they work with,
        and any configuration information.
 Alternatives
        Ergonomic keyboards.
MICE
 Sun-1, Sun-2, Sun-3, Sun-4
        Descriptions of types of mice, what CPUs they work with, and any
        configuration information.
 Alternatives
        Trackballs, etc.
MONITORS
 TTL mono, ECL/TTL mono, color
        Descriptions of types of monitors, what video boards they work
        with, and any configuration information.
FLOPPY DRIVES
        Descriptions of models commonly used, including jumpers and
        switch settings.
TAPE DRIVES
 9-track, QIC-11, QIC-24
        Descriptions of models commonly used, including jumpers and
        switch settings.

                            *** PART VI ***

APPENDICES
 Cardcage configuration tables
        What cards go in which slots in which machines.

                            *** PART VII ***

APPENDICES (cont'd)
 Repairs and Modifications
        Repair and modification information as contributed by various
        net.people.
 Part number index
        Index of all known part numbers, with references to larger
        descriptions, if any, in the main body
 Announcement Dates/List Prices
        Announcement dates and list prices for various configurations.
 Author's Notes
        Miscellanea.
 Bibliography/Acknowledgments
        Contributors, and documents used in compiling this reference.


CPU/CHASSIS
===========

   For each model listed below, whatever information is available is
given, in the following order:

   Processor: The microprocessor followed by its clock speed in MHz. The
floating point coprocessor (FPU), if any, followed by whatever
information is available about the MMU, including the number of hardware
contexts. Lastly, various speed ratings, as available: MIPS (Millions of
Instructions Per Second, aka Meaningless...), MFLOPS (Millions of
FLoating-point OPerations per Second), SPECmark89, and/or
SPECint92/SPECfp92/SPECintRate92/SPECfpRate92. Note that some SPARC
processors are referred to by name; information on these is available in
the "Processor Data" section.

   CPU or motherboard: The Sun part number of the CPU board or
motherboard.

   Chassis type: "Rackmount" chassis, as the name suggests, are designed
to fit into a standard 19" equipment rack. They usually require
clearance over and under the chassis for cooling. "Pizza box" chassis
are intended to sit on a desktop, typically underneath the monitor; they
are low, wide, and deep. Older pizza boxes (2/50, 3/75, 3/50, and 3/60)
are much wider than they are deep; newer ones are square (3/80,
SPARCstation 1, 1+, 2, etc.). Some older pizza boxes (mostly the 3/50)
have a 'dimple top', a case top with a circular depression that allows
the chassis to serve as a tilt/swivel monitor base directly. 9-slot
Multibus and 12-slot VME (and probably 6-slot VME as well) "deskside"
chassis are wide towers that must stand on the floor. 3-slot VME
"deskside" chassis can stand on the floor as narrow towers or lie on
their sides on a desktop as tallish pizza boxes. "Lunchbox" chassis are
small rectangular boxes the size of a couple large hardcover books
stacked. "Monitor" chassis (SPARCstation SLC, etc.) have the motherboard
in the back of the monitor.

   Bus: Whatever bus or busses the machine has. Sun has, at various
times, used Multibus, VMEbus, ISA, SBus, Mbus, and XDBus.

   Memory: The amount of physical memory the machine can take, if known,
followed by the maximum size of the machine's virtual memory space, if
known, followed by the cycle time for physical memory, if known, and
finally details of any on-chip or off-chip caches, if known. The caches
on the Motorola 68020 and 68030 and the Intel 80386 are not described,
since information on these chips is widely known. To save space, the
on-chip caches of various common SPARC processors are described in the
"Processor Data" section.

   Notes: General information which does not belong under other
headings.

   Not all models shown in the Announcement Date/List Price section in
the appendix are described in this section. In particular, models which
differ only in peripherals have been excluded.

    Sun-1
    -----

OVERVIEW

   Sun-1's were the very first models ever produced by Sun. The earliest
ran Unisoft V7 UNIX; SunOS 1.x was introduced later. According to some
sources, fewer than 200 Sun-1's were ever produced; they are certainly
rare. The switch from Motorola 68000's to 68010's occurred during the
Sun-1's reign. Some models are reported to have 3Mbit Ethernet taps as
well as 10Mbit.

   68000-based Sun-1's are not supported by SunOS. The last version of
SunOS to support Sun-1's may be the same as the last version to support
Sun-2's, since the 100U CPU boards are the same part.

   From bjork@rahul.net (../Steven):

        [The Sun-1] did not have the DVMA of the sun-2 architecture.
        There was an even earlier board that had the 68000, not the
        68010. The 68000 board was licensed by Stanford to several folks
        (can't recall names). The original cisco cpu was a slightly
        upgraded 68000 version. Andy Bechtolsheim was using SUDS on the
        triple-I in the CS Dungeon (Margaret Jacks Hall) when my boss
        asked him to modify the sun board to accept 256k ram chips. I
        handed Andy a pencil and the schematics and he scribbled the
        mods on it. I took the mods, and with exacto knife and jumpers,
        modified a sun board for the 256k chips. Len Bosack then took
        the mods and relaid out the PC. That board was the first cisco
        cpu, and was also produced internally to Stanford.

        [...]

        The original sun lacked the DVMA and thus needed Multibus
        memory. Their "ar" tape controller design thus included 256k of
        Multibus memory. When upgraded to a sun2, one had to switch this
        ar-resident memory off since it would conflict with the DVMA
        memory on the sun2 P2 (memory bus).

MODELS

    Sun-1

        Processor(s):   68000
        Notes:          Large black desktop boxes with 17" monitors.
                        Uses the original Stanford-designed video board
                        and a parallel microswitch keyboard (type 1) and
                        parallel mouse (Sun-1).

    100
        Processor(s):   68000 @ 10MHz
        Bus:            Multibus, serial
        Notes:          Uses a design similar to original SUN (Stanford
                        University Network) CPU. The version 1.5 CPU can
                        take larger RAMs.

    100U
        Processor(s):   68010 @ 10MHz
        CPU:            501-1007
        Bus:            Multibus, serial
        Notes:          "Brain transplant" for 100 series. Replaced CPU
                        and memory boards with first-generation Sun-2
                        CPU and memory boards so original customers
                        could run SunOS 1.x. Still has parallel kb/mouse
                        interface so type 1 keyboards and Sun-1 mice
                        could be connected.

    170
        Processor(s):   68010?
        Bus:            Multibus?
        Chassis type:   rackmount
        Notes:          Server. Slightly different chassis design than
                        2/170's

    Sun-2
    -----

OVERVIEW

   Sun-2's were introduced in the early 1980's and were Sun's first
major commercial success. While not as popular or as common as the later
Sun-3's, they did well and there are still quite a few in circulation in
the home/collector-used market.

   All Sun-2's are based on the Motorola 68010 and run SunOS. The last
version of SunOS to support Sun-2's was 4.0.3. Early Sun-2's were
Multibus; later models were VME, which Sun continued to use through the
Sun-3 era and well into the Sun-4 line.

   One of the hardest parts of restoring a Sun-2 is finding OS tapes for
it. The hardware is usually still in fine working order, but tapes -- if
you can even find any -- are sometimes unreadable after so many years.
See author's notes in the appendices.

MODELS

    2/120
        Processor(s):   68010 @ 10MHz
        CPU:            501-1007/1051
        Chassis type:   deskside
        Bus:            Multibus, 9 slots
        Memory:         7M physical with mono video, 8M without
        Notes:          First machines in deskside chassis. Serial
                        microswitch keyboard (type 2), Mouse Systems
                        optical mouse (Sun-2).

    2/170
        Processor(s):   68010 @ 10MHz
        CPU:            501-1007/1051
        Chassis type:   rackmount
        Bus:            Multibus, 15 slots
        Memory:         7M physical with mono video, 8M without
        Notes:          Server.

    2/50
        Processor(s):   68010 @ 10MHz
        CPU:            501-1141/1142/1143
        Chassis type:   wide pizza box
        Bus:            VME, 2 slots
        Memory:         7M physical
        Notes:          Optional SCSI board (model name is SCSI-2
                        because it is the second SCSI design; the first
                        was for 2/1xx's) sits on memory expansion board
                        in second slot. CPU board has 1, 2, or 4M,
                        Ethernet, two serial ports. The (type 2)
                        keyboard and mouse attach via an adapter that
                        accepts two modular plugs and attaches to a DB15
                        port.

    2/130
    2/160
        Processor(s):   68010
        CPU:            501-1144/1145/1146
        Chassis type:   deskside
        Bus:            VME, 12 slots
        Memory:         7M physical
        Notes:          First machine in 12-slot deskside VME chassis.
                        Has four-fan cooling tray instead of six as in
                        later machines, which led to cooling problems
                        with lots of cards. Also has only four P2 memory
                        connectors bussed instead of six. 2/160
                        upgradeable to a 3/160 by replacing the CPU
                        board. No information on the differences between
                        the 2/130 and the 2/160.

    Sun-3
    -----

OVERVIEW

   Sun switched to using the Motorola 68020 with the introduction of the
Sun-3's.  A few later models had 68030's, but by that time Sun was
already moving toward SPARC processors. All models either have a 68881
or 68882 FPU installed stock or at least have a socket for one. All
models which are not in pizza box chassis are VMEbus. Two out of three
pizza box models have a "P4" connector which can take a framebuffer; the
exception is the 3/50.

   Support for Sun-3's was introduced in SunOS 3.0. The last version of
SunOS to support Sun-3's was 4.1.1U1.

   During the Sun-3 era, Sun introduced the handy practice of putting
the model number on the Sun badge on the front of the chassis.

   There are two different kernel architectures in the Sun-3 model line.
All 68020-based models are "sun3" architecture; 68030-based models (the
3/80 and 3/4xx) are "sun3x" architecture.

MODELS

    3/160
        Processor(s):   68020 @ 16.67MHz, 68881, Sun-3 MMU, 8 hardware
                        contexts, 2 MIPS
        CPU:            501-1074/1096/1163/1164/1208
        Chassis type:   deskside
        Bus:            VME, 12 slots
        Memory:         16M physical (documented), 256M virtual, 270ns cycle
        Notes:          First 68020-based Sun machine. Uses the 3004
                        "Carrera" CPU, which is used in most other Sun
                        3/1xx models and the 3/75. Sun supplied 4M
                        memory expansion boards; third parties had up to
                        32M on one card. SCSI optional. One variant of
                        the memory card holds a 6U VME SCSI board; there
                        is also a SCSI board which sits in slot 7 of the
                        backplane and runs the SCSI bus out the back of
                        the backplane to the internal disk/tape (slot 6
                        in very early backplanes). CPU has two serial
                        ports, Ethernet, keyboard. Type 3 keyboard plugs
                        into the CPU; Sun-3 mouse plugs into the
                        keyboard. Upgradeable to a 3/260 by replacing
                        CPU and memory boards.

    3/75
        Processor(s):   68020 @ 16.67MHz, 68881, Sun-3 MMU, 8 hardware
                        contexts, 2 MIPS
        CPU:            501-1074/1094/1163/1164
        Chassis type:   wide pizza box
        Bus:            VME, 2 slot
        Memory:         16M physical (documented), 256M virtual, 270ns cycle
        Notes:          Optional SCSI sits on memory expansion board in
                        second slot.

    3/140
        Processor(s):   68020 @ 16.67MHz, 68881, Sun-3 MMU, 8 hardware
                        contexts, 2 MIPS
        CPU:            501-1074/1094/1163/1164/1208
        Chassis type:   deskside
        Bus:            VME, 3 slots
        Memory:         16M physical (documented), 256M virtual, 270ns cycle

    3/150
        Processor(s):   68020 @ 16.67MHz, 68881, Sun-3 MMU, 8 hardware
                        contexts, 2 MIPS
        CPU:            501-1074/1094/1163/1164/1208
        Chassis type:   deskside
        Bus:            VME, 6 slots
        Memory:         16M physical (documented), 256M virtual, 270ns cycle

    3/180
        Processor(s):   68020 @ 16.67MHz, 68881, Sun-3 MMU, 8 hardware
                        contexts, 2 MIPS
        CPU:            501-1074/1094/1163/1164/1208
        Chassis type:   rackmount
        Bus:            VME, 12 slots
        Memory:         16M physical (documented), 256M virtual, 270ns cycle
        Notes:          Rackmount version of 3/160. Upgradeable to a
                        3/280 by replacing the CPU and memory boards.
                        Very early backplanes have the special SCSI
                        hookup on slot 6 rather than 7.

    3/110
        Processor(s):   68020
        CPU:            501-1134/1209
        Chassis type:   deskside
        Bus:            VME, 3 slots
        Notes:          Similar to the "Carerra" CPU, but has 8-bit
                        color framebuffer (cgfour) on board and uses 1M
                        RAM chips for 4M on-CPU memory. Code-named
                        "Prism".

    3/50
        Processor(s):   68020 @ 15.7MHz, 68881 (socket for
                        501-1075/1133/1162, installed for 501-1207),
                        Sun-3 MMU, 8 hardware contexts, 1.5 MIPS
        CPU:            501-1075/1133/1162/1207
        Chassis type:   wide pizza box
        Bus:            none
        Memory:         4M physical (documented), 256M virtual, 270ns cycle
        Notes:          Cycle-stealing monochrome frame buffer. 4M
                        memory maximum stock, but third-party memory
                        expansion boards were sold, allowing up to at
                        least 12M. No bus or P4 connector. Onboard SCSI.
                        Thin coax or AUI Ethernet. Code-named "Model
                        25".

    3/60
        Processor(s):   68020 @ 20MHz, 68881 (stock), Sun-3 MMU,
                        8 hardware contexts, 3 MIPS
        CPU:            501-1205/1322/1334/1345
        Chassis type:   wide pizza box
        Bus:            P4 connector (not same as P4 on 3/80)
        Memory:         24M physical, 256M virtual, 200ns cycle
        Notes:          VRAM monochome frame buffer for 501-1205/1334.
                        Optional color frame buffer (can run mono and
                        color simultaneously) on P4 connector. Onboard
                        SCSI. SIMM memory (100ns 1M x 9 SIMMs). High
                        (1600 * 1100) or low (1152 * 900) resolution
                        mono selectable by jumper. Thin coax or AUI
                        Ethernet. Code-named "Ferrari". 4M stock on
                        501-1205/1322, 0M stock on 501-1322/1345.

    3/60LE
        Processor(s):   68020 @ 20MHz, 68881 (stock), Sun-3 MMU,
                        8 hardware contexts, 3 MIPS
        CPU:            501-1378
        Bus:            P4 connector (not same as P4 on 3/80)
        Memory:         12M physical, 256M virtual, 200ns cycle
        Notes:          A version of the 3/60 with no onboard
                        framebuffer and limited to 12M of RAM (4M of
                        256K SIMMs and 8M of 1M SIMMs).

    3/260
        Processor(s):   68020 @ 25MHz, 68881 @ 20MHz (stock), Sun-3 MMU,
                        8 hardware contexts, 4 MIPS
        CPU:            501-1100/1206
        Chassis type:   deskside
        Bus:            VME, 12 slot
        Memory:         64M (documented) physical with ECC, 256M virtual;
                        64K write-back cache, direct-mapped,
                        virtually-indexed and virtually-tagged, with
                        16-byte lines; 80ns cycle
        Notes:          Two serial ports, AUI Ethernet, keyboard, and
                        video on CPU. Video is mono, high-resolution
                        only. Sun supplied 8M memory boards. Sun 4/2xx
                        32M boards work up to 128M. First Sun with an
                        off-chip cache. Upgradeable to a 4/260 by
                        replacing the CPU board. Code-named "Sirius".

    3/280
        Processor(s):   68020 @ 25MHz, 68881 @ 20MHz (stock), Sun-3 MMU,
                        8 hardware contexts, 4 MIPS
        CPU:            501-1100/1206
        Chassis type:   rackmount
        Bus:            VME, 12 slot
        Memory:         64M (documented) physical with ECC, 256M virtual;
                        64K write-back cache, direct-mapped,
                        virtually-indexed and virtually-tagged, with
                        16-byte lines; 80ns cycle
        Notes:          Rackmount version of the 3/260. Upgradeable to a
                        4/280 by replacing the CPU board. Code-named
                        "Sirius".

    3/80
        Processor(s):   68030 @ 20MHz, 68882 @ 20MHz, 68030 on-chip
                        MMU, 3 MIPS, 0.16 MFLOPS
        CPU:            501-1401/1650
        Chassis type:   square pizza box
        Bus:            P4 connector (not same as P4 on 3/60)
        Memory:         16M or 40M physical, 4G virtual, 100ns cycle
        Notes:          Similar packaging to SparcStation 1. Parallel
                        port, SCSI port, AUI Ethernet, 1.44M 3.5" floppy
                        (720K on early units?). No onboard framebuffer.
                        Code-named "Hydra". Type-4 keyboard and Sun-4
                        mouse, plugged together and into the machine
                        with a small DIN plug. 1M x 9 30-pin 100ns
                        SIMMs. Boot ROM versions 3.0.2 and later allow
                        using 4M SIMMs in some slots for up to 40M (see
                        Misc Q&A #15).

    3/460
        Processor(s):   68030 @ 33 MHz, 68882, 68030 on-chip MMU,
                        7 MIPS, 0.6 MFLOPS
        CPU:            501-1299/1550
        Bus:            VME
        Memory:         128M physical with ECC, 4G/process virtual,
                        64K cache, 80ns cycle
        Notes:          A 3/260 upgraded with a 3/4xx CPU board. Uses
                        original 3/2xx memory boards.

    3/470
        Processor(s):   68030 @ 33 MHz, 68882, 68030 on-chip MMU,
                        7 MIPS, 0.6 MFLOPS
        CPU:            501-1299/1550
        Chassis type:   deskside
        Bus:            VME
        Memory:         128M physical with ECC, 4G/process virtual,
                        64K cache, 80ns cycle
        Notes:          Rare. Code-named "Pegasus". 8M standard, uses
                        same memory boards as 3/2xx.

    3/480
        Processor(s):   68030 @ 33 MHz, 68882, 68030 on-chip MMU,
                        7 MIPS, 0.6 MFLOPS
        CPU:            501-1299/1550
        Chassis type:   rackmount
        Bus:            VME
        Memory:         128M physical with ECC, 4G/process virtual,
                        64K cache, 80ns cycle
        Notes:          Rare. Code-named "Pegasus". 8M standard, uses
                        same memory boards as 3/2xx.

    3/E
        Processor(s):   68020
        CPU:            501-8028
        Bus:            VME
        Notes:          Single-board VME Sun-3, presumably for use as a
                        controller, not as a workstation. 6U form
                        factor. Serial and keyboard ports. External RAM,
                        framebuffer, and SCSI/ethernet boards
                        available.

    Sun 386i
    --------

OVERVIEW

   The Sun 386i models, based on the Intel 80386 processor, were
introduced when 80386-based IBM PC/AT clones were starting to become
widespread. Intel had finally produced a chip sufficiently capable
(32-bit, among other things) to allow porting SunOS, and using an Intel
processor and an ISA bus offered the ability to run MS-DOS applications
without speed-draining emulation. Unfortunately, they were a dismal
failure.

   Support for Sun-386i's was introduced in SunOS 4.0 (?). The 386i
SunOS releases came from Sun's East Coast division, so 386i SunOS was
not identical to the standard version with the same number. The last
released version of SunOS to support Sun-386i's was 4.0.2; there are a
few copies of 4.0.3Beta (with OpenLook 2.0) floating around.

MODELS

    386i/150
        Processor(s):   80386 @ 20MHz, 80387, 80386 on-chip MMU,
                        3 MIPS, 0.17 MFLOPS
        CPU:            501-1241/1414
        Chassis type:   tower (20"H * 7"W * 16"D)
        Bus:            4 32-bit slots; ISA (3 16-bit, 1 8-bit)
        Memory:         8M physical
        Notes:          Shared code name "Roadrunner" with the /250. The
                        frame buffer was not on the ISA bus. 720K or
                        1.44M 3.5" floppy. A variant of the 150 had the
                        250's external cache.

    386i/250
        Processor(s):   80386 @ 25MHz, 80387, 80386 on-chip MMU,
                        5 MIPS, 0.2 MFLOPS
        CPU:            501-1324/1413
        Chassis type:   tower
        Bus:            4 32-bit slots; ISA (3 16-bit, 1 8-bit)
        Memory:         16M physical, 32K cache
        Notes:          Shared code name "Roadrunner" with the /150. The
                        frame buffer was not on the ISA bus. 720K or
                        1.44M 3.5" floppy.

    486i
        Processor(s):   80486
        Notes:          Code-named "Apache". A very limited quantity of
                        these were supposedly built and shipped to
                        customers just before the Intel-based line was
                        cancelled.


    Sun-4/SPARCstation/SPARCserver/SPARCwhatever
    --------------------------------------------

OVERVIEW

   These machines were initially introduced with model designations in
the same pattern as previous lines: Sun 4/xxx. However, for marketing
purposes, Sun departed from their classic naming scheme with the name
SPARCstation, and has since experimented with alphabetic designations
(e.g. "SPARCstation SLC") before returning to numbered SPARCstations.
Until the SPARCstation 10, however, every model still had a 4/xxx
designation as well, which is displayed by the ROM monitor during
power-up and used by much of Sun's documentation.

   This model line marks the introduction of Sun's own RISC chip, the
SPARC. There have been a number of different implementations of the chip
from various manufacturers, with varying degrees of hardware support for
the instruction set.

   Support for Sun-4's was introduced in SunOS 4.0, although there was a
special variant of SunOS 3.2 for Sun-4's which was shipped with some
very early units. Since this product line is still current, it is still
in general supported by SunOS, which has mutated to become part of
Solaris. Support for some earlier models has been dropped, and some
later models require at least 4.0.3c, 4.1.1, or Solaris 2.x.

   Some of the later models have pictures silkscreened on their CPU
boards.

   Note that MIP/GIP ratings for later models are even more suspicious
than usual for benchmarks.

   There are several kernel architectures in the Sun-4 model line. Where
known, the architecture for each model is listed.

MODELS

    4/260
        Processor(s):   SF9010 @ 16.67MHz, Weitek 1164/1165, Sun-4 MMU,
                        16 hardware contexts, 10 MIPS, 1.6 MFLOPS
        CPU:            501-1274/1491/1522
        Chassis type:   deskside
        Bus:            VME, 12 slot
        Memory:         128M physical with ECC, 1G/process virtual,
                        60ns cycle
        Architecture:   sun4
        Notes:          First SPARC machine. Code-named "Sunrise". Cache
                        much like Sun-3/2xx, uses same memory boards.

    4/110
        Processor(s):   MB86900 @ 14.28MHz, Weitek 1164/1165, Sun-4 MMU,
                        16 hardware contexts, 7 MIPS
        CPU:            501-1199/1237/1462/1463/1464/1465/1512/1513/
                            1514/1515/1516/1517/1656/1657/1658/1659/
                            1660/1661
        Chassis type:   deskside
        Bus:            VME, 3 slot
        Memory:         32M physical with parity, 1G/process virtual,
                        70ns cycle
        Architecture:   sun4
        Notes:          First desktop-able SPARC. CPU doesn't support
                        VME busmaster cards (insufficient room on CPU
                        board for full VME bus interface), so DMA disk
                        and tape boards won't work with it. Originally
                        intended as single-board machine, although there
                        are a few slave-only VME boards (such as the
                        ALM-2 and second ethernet controller) which work
                        with it. Onboard SCSI, two serial ports,
                        Ethernet, keyboard/mouse. "P4" frame buffer
                        could be monochrome or color. Used static column
                        RAM rather than a conventional cache. Code-named
                        "Cobra". CPUs 501-1199/1462/1464/1512/1514/1516/
                        1656/1658/1660 do not have an FPU; 501-1237/
                        1463/1465/1513/1515/1517/1657/1659/1661 have an
                        FPU.

    4/280
        Processor(s):   SF9010 @ 16.67MHz, Weitek 1164/1165, Sun-4 MMU,
                        16 hardware contexts, 10 MIPS, 1.6 MFLOPS
        CPU:            501-1274/1491/1522
        Chassis type:   rackmount
        Bus:            VME, 12 slot
        Memory:         128M physical with ECC, 1G/process virtual,
                        60ns cycle
        Architecture:   sun4
        Notes:          Rackmount version of 4/260.

    4/150
        Notes:          4/110 CPU in a 3/150 chassis.

    SPARCstation 1 (4/60)
        Processor(s):   MB86901A or LSI L64801 @ 20MHz, Weitek 3170,
                        Sun-4c MMU, 8 hardware contexts, 12.5 MIPS, 1.4
                        MFLOPS, 10 SPECmark89
        CPU:            501-1382/1629
        Chassis type:   square pizza box
        Bus:            SBus @ 20MHz, 3 slots (slot 3 slave-only)
        Memory:         64M physical with synchronous parity,
                        512M/process virtual; 64K write-through cache,
                        direct-mapped, virtually indexed, virtually
                        tagged, 16-byte lines; 50ns cycle
        Architecture:   sun4c
        Notes:          Code name "Campus". 1M or 4M x 9 30-pin 100ns
                        SIMMs, in four banks. 720K or 1.44M (?) 3.5"
                        floppy. First supported in SunOS 4.0.3c.

    SPARCserver 1
        Notes:          SPARCstation 1 without a monitor/framebuffer.

    4/330 (SPARCstation 330, SPARCserver 330)
        Processor(s):   CY7C601 @ 25MHz, TI8847, Sun-4 MMU, 16 hardware
                        contexts, 16 MIPS, 2.6 MFLOPS, 11.3 SPECmark89
        CPU:            501-1316/1742
        Bus:            VME
        Memory:         56M/72M physical with synchronous parity, 1G/process
                        virtual, 128K cache, 40ns cycle
        Architecture:   sun4
        Notes:          Onboard SCSI, serial ports. Uses SIMMs. Cache
                        similar to 4/2xx but write-through. Code-named
                        "Stingray". 56M limit only for early versions of
                        ROM. 1M or 4M x 9 30-pin SIMMs, 100ns.

    4/310
        Notes:          4/3xx CPU in a 4/110 chassis.

    4/350
        Notes:          4/3xx CPU in a 3/150 chassis.

    4/360
        Processor(s):   CY7C601 @ 25MHz, TI8847, Sun-4 MMU, 16 hardware
                        contexts, 16 MIPS, 2.6 MFLOPS, 11.3 SPECmark89
        CPU:            501-1316/1742
        Chassis type:   deskside
        Bus:            VME, 12 slots
        Memory:         56M+ physical with synchronous parity, 1G/process
                        virtual, 128K cache, 40ns cycle
        Architecture:   sun4
        Notes:          4/260 upgraded with a 4/3xx CPU. Onboard SCSI,
                        serial ports. Uses SIMMs. Cache similar to 4/2xx
                        but write-through. Code-named "Stingray". Room
                        for SCSI disk in top of chassis. 56M limit only
                        for early versions of ROM. 1M or 4M x 9 30-pin
                        SIMMs, 100ns.

    4/370 (SPARCstation 370, SPARCserver 370)
        Processor(s):   CY7C601 @ 25MHz, TI8847, Sun-4 MMU, 16 hardware
                        contexts, 16 MIPS, 2.6 MFLOPS, 11.3 SPECmark89
        CPU:            501-1316/1742
        Bus:            VME, 12 slots
        Memory:         56M+ physical with synchronous parity, 1G/process
                        virtual, 128K cache, 40ns cycle
        Architecture:   sun4
        Notes:          Onboard SCSI, serial ports. Uses SIMMs. Cache
                        similar to 4/2xx but write-through. Code-named
                        "Stingray". Room for up to four SCSI disks in
                        top of chassis. 56M limit only for early
                        versions of ROM. 1M or 4M x 9 30-pin SIMMs,
                        100ns.

    4/380
        Notes:          4/280 upgraded with 4/3xx CPU.

    4/390 (SPARCserver 390)
        Processor(s):   CY7C601 @ 25MHz, TI8847, Sun-4 MMU, 16 hardware
                        contexts, 16 MIPS, 2.6 MFLOPS, 11.3 SPECmark89
        CPU:            501-1316/1742
        Bus:            VME
        Memory:         56M+ physical with synchronous parity, 1G/process
                        virtual, 128K cache, 40ns cycle
        Architecture:   sun4
        Notes:          Onboard SCSI, serial ports. Uses SIMMs. Cache
                        similar to 4/2xx but write-through. Code-named
                        "Stingray". 56M limit only for early versions of
                        ROM. 1M or 4M x 9 30-pin SIMMs, 100ns.

    4/470 (SPARCstation 470, SPARCserver 470)
        Processor(s):   CY7C601 @ 33MHz, TI8847 (?), 64 hardware
                        contexts, 22 MIPS, 3.8 MFLOPS, 17.6 SPECmark89
        CPU:            501-1381/1899
        Bus:            VME
        Memory:         96M physical, 128K cache
        Architecture:   sun4
        Notes:          Write-back rather than write-through cache,
                        3-level rather than 2-level Sun-style MMU.
                        Code-name "Sunray" (which was also the code name
                        for the 7C601 CPU).

    4/490 (SPARCserver 490)
        Processor(s):   CY7C601 @ 33MHz, TI8847 (?), 64 hardware
                        contexts, 22 MIPS, 3.8 MFLOPS, 17.6 SPECmark89
        CPU:            501-1381/1899
        Bus:            VME
        Memory:         96M physical, 128K cache
        Architecture:   sun4
        Notes:          Write-back rather than write-through cache,
                        3-level rather than 2-level Sun-style MMU.
                        Code-name "Sunray" (which was also the code name
                        for the 7C601 CPU).

    SPARCstation SLC (4/20)
        Processor(s):   MB86901A or LSI L64801 @ 20MHz, 12.5 MIPS, 1.2
                        MFLOPS, 8.6 SPECmark89
        CPU:            501-1627/1680/1720/1748 (1776/1777 ?)
        Chassis type:   monitor
        Bus:            none
        Memory:         16M physical; 64K write-through cache,
                        direct-mapped, virtually indexed, virtually
                        tagged, 16-byte lines
        Architecture:   sun4c
        Notes:          Code name "Off-Campus". 4M x 33 72-pin SIMMs. No
                        fan. 17" mono monitor built in. Has audio,
                        keyboard, A/B serial (in same DB25), SCSI-2, and
                        AUI Ethernet connectors. First supported in
                        SunOS 4.0.3c.

    SPARCstation IPC (4/40)
        Processor(s):   MB86901A or LSI L64801 @ 25MHz, 13.8 SPECint92,
                        11.1 SPECfp92, 327 SPECintRate92, 263
                        SPECfpRate92
        CPU:            501-1689/1835/1870/1974 (1690?)
        Chassis type:   lunchbox
        Bus:            SBus @ 25MHz, 2 slots
        Memory:         48M physical; 64K write-through cache,
                        direct-mapped, virtually indexed, virtually
                        tagged, 16-byte lines
        Architecture:   sun4c
        Notes:          Code name "Phoenix". 1M or 4M x 9 30-pin 100ns
                        SIMMs, three banks. Onboard mono frame buffer.
                        1.44M 3.5" floppy. First supported in SunOS
                        4.0.3c.

    SPARCstation 1+ (4/65)
        Processor(s):   LSI L64801 @ 25MHz, Weitek 3172, Sun-4c MMU,
                        8 hardware contexts, 15.8 MIPS, 1.7 MFLOPS, 12
                        SPECmark89
        CPU:            501-1632
        Chassis type:   square pizza box
        Bus:            SBus @ 25MHz, 3 slots (slot 3 slave-only)
        Memory:         64M (40M?) physical with synchronous parity,
                        512M/process virtual; 64K write-through cache,
                        direct-mapped, virtually indexed, virtually
                        tagged, 16-byte lines; 50ns cycle
        Architecture:   sun4c
        Notes:          Code name "Campus B". 1M or 4M x 9 30-pin 100ns
                        SIMMs, in four banks. 1.44M 3.5" floppy.
                        Essentially same as SPARCstation 1, just faster
                        clock and improved SCSI controller. First
                        supported in SunOS 4.0.3c.

    SPARCserver 1+
        Notes:          SPARCstation 1+ without a monitor/framebuffer.

    SPARCstation 2 (4/75)
        Processor(s):   CY7C601 @ 40MHz, TI TMS390C601A (602A ?), Sun-4c
                        MMU, 16 hardware contexts, 28.5 MIPS, 4.2
                        MFLOPS, 21.8 SPECint92, 22.8 SPECfp92, 517
                        SPECintRate92, 541 SPECfpRate92
        CPU:            501-1638/1744/1858/1859/1912/1926/1989/1995
        Chassis type:   square pizza box
        Bus:            SBus @ 20MHz, 3 slots
        Memory:         64M physical on motherboard/128M total, 64K
                        write-through cache, direct-mapped, virtually
                        indexed, virtually tagged, 32-byte lines
        Architecture:   sun4c
        Notes:          Code name "Calvin". 4M x 9 30-pin 80ns SIMMs, in
                        four banks. Case slightly larger and has more
                        ventilation. (Some models apparently have LSI
                        L64811 @ 40MHz?) Expansion beyond 64M is
                        possible with a 32M card which can take a 32M
                        daughterboard (card blocks SBus slot). First
                        supported in SunOS 4.1.1.

    SPARCserver 2
        Notes:          SPARCstation 2 without a monitor/framebuffer.

    SPARCstation ELC (4/25)
        Processor(s):   Fujitsu MB86903 or Weitek W8701 @ 33MHz, FPU on
                        CPU chip, Sun-4c MMU, 8 hardware contexts,
                        21 MIPS, 3 MFLOPS, 18.2 SPECint92, 17.9
                        SPECfp92, 432 SPECintRate92, 425 SPECfpRate92
        CPU:            501-1861 (1730?)
        Chassis type:   monitor
        Bus:            none
        Memory:         64M physical; 64K write-through cache,
                        direct-mapped, virtually indexed, virtually
                        tagged, 32-byte lines
        Architecture:   sun4c
        Notes:          Code name "Node Warrior". 4M or 16M x 33 72-pin
                        SIMMs. No fan. 17" mono monitor built in. first
                        supported in SunOS 4.1.1c.

    SPARCstation IPX (4/50)
        Processor(s):   Fujitsu MB86903 or Weitek W8701 @ 40MHz, FPU on
                        CPU chip, Sun-4c MMU, 8 hardware contexts,
                        28.5 MIPS, 4.2 MFLOPS, 21.8 SPECint92,
                        21.5 SPECfp92, 517 SPECintRate92, 510
                        SPECfpRate92
        CPU:            501-1780/1810/1959/2044
        Chassis type:   lunchbox
        Bus:            SBus @ 20MHz, 2 slots
        Memory:         64M physical; 64K write-through cache,
                        direct-mapped, virtually indexed, virtually
                        tagged, 32-byte lines
        Architecture:   sun4c
        Notes:          Code name "Hobbes". 4M or 16M x 33 72-pin SIMMs.
                        Onboard GX-accelerated cg6 color framebuffer
                        (not usable with ECL mono monitors, unlike SBus
                        version). Picture of Hobbes (from Watterson's
                        "Calvin and Hobbes" comic strip) silkscreened on
                        motherboard. 1.44M 3.5" floppy. First supported
                        in SunOS 4.1.1 (may require IPX supplement).

    SPARCengine 1 (4/E)
        CPU:            501-8035/8058/8064
        Bus:            SBus, 1 slot
        Notes:          Basically a SPARCstation 1 (or 1+?) with a VME
                        interface and 8K rather than 4K pages. Sold as a
                        6U VME board. Code name "Polaris".

    SPARCserver 6xxMP/xx
        Processor(s):   Mbus modules
        CPU:            501-1686/2055
        Chassis type:   rackmount
        Bus:            VME; SBus @ 20MHz; and Mbus
        Memory:         640M physical
        Architecture:   sun4m
        Notes:          First Mbus-based machine. Cypress/ROSS Mbus
                        modules later upgraded to TI SuperSPARC modules
                        (/xx models). Code name "Galaxy". Up to four
                        CPUs. 4M or 16M x 9 80ns 30-pin SIMMs.

    SPARCclassic (SPARCclassic Server)(SPARCstation LC) (4/15)
        Processor(s):   microSPARC @ 50MHz, 59.1 MIPS, 4.6 MFLOPS,
                        26.4 SPECint92, 21.0 SPECfp92,
                        626 SPECintRate92, 498 SPECfpRate92
        CPU:            501-2200/2262/2326
        Chassis type:   lunchbox
        Bus:            SBus @ 20MHz, 2 slots
        Memory:         96M physical
        Architecture:   sun4m
        Notes:          Sun4m architecture, but no Mbus. Shares code
                        name "Sunergy" with LX. Uniprocessor only. 1.44M
                        3.5" floppy. Soldered CPU chip. Onboard cgthree
                        framebuffer, AMD79C30 8-bit audio chip. Takes
                        pairs of 4M or 16M 60ns SIMMs. First supported
                        in SunOS 4.1.3c.

    SPARCclassic X (4/10)
        CPU:            501-2079/2262/2313
        Notes:          Essentially the same as SPARCclassic, but
                        intended for use as an X terminal (?).

    SPARCstation LX/ZX (4/30)
        Processor(s):   microSPARC @ 50MHz, 59.1 MIPS, 4.6 MFLOPS,
                        26.4 SPECint92, 21.0 SPECfp92,
                        626 SPECintRate92, 498 SPECfpRate92
        CPU:            501-2031/2032/2233/2474
        Chassis type:   lunchbox
        Bus:            SBus @ 20MHz, 2 slots
        Memory:         96M physical
        Architecture:   sun4m
        Notes:          Sun4m architecture, but no Mbus. Shares code
                        name "Sunergy" with SPARCclassic. Uniprocessor
                        only. Takes pairs of 4M or 16M 60ns SIMMs.
                        Soldered CPU chip. Onboard cgsix framebuffer, 1M
                        VRAM standard, expandable to 2M. DBRI 16-bit
                        audio/ISDN chip. First supported in SunOS
                        4.1.3c.

   SPARCstation Voyager
        Processors(s):  microSPARC II @ 60MHz, 47.5 SPECint92,
                        40.3 SPECfp92, 1025 SPECintRate92, 859
                        SPECfpRate92
        Bus:            SBus; PCMCIA type II, 2 slots
        Memory:         80M physical
        Architecture:   sun4m
        Notes:          Portable (laptop?). 16M standard, two memory
                        expansion slots for Voyager-specific SIMMs (16M
                        or 32M). Code-named "Gypsy". 14" 1152x900 mono
                        or 12" 1024x768 color flat panel displays. DBRI
                        16-bit audio/ISDN chip.

    SPARCserver 10/xx
        Notes:          SPARCstation 10/xx without monitor/framebuffer.

    SPARCstation 3
        Notes:          Although this model appeared in a few Sun price
                        lists, it was renamed the SPARCstation 10 before
                        release.

    SPARCstation 10/xx
        Processor(s):   up to two Mbus modules
        Motherboard:    501-1733/2259/2274/2365 (-2274 in model 20 only)
        Chassis type:   square pizza box
        Bus:            SBus @ 16.6/20MHz (model 20) or 18/20MHz, 4 slots;
                        and Mbus, 2 slots
        Memory:         512M physical
        Architecture:   sun4m
        Notes:          Code name "Campus-2". 1.44M 3.5" floppy. Up to
                        four CPUs, some models with multiple CPUs stock.
                        16M or 64M 70ns SIMMs. Some models (514,
                        others?) use double-width CPU modules which
                        block SBus slots.

                        model  MHz  SPECint92 SPECfp92 SPECint  SPECfp
                        -----  ---  --------- -------- -Rate92--Rate92-
                        10/20  33     39.8      46.6     943     1104
                        10/30  36     45.2      54.0    1072     1282
                        10/40  40     50.2      60.2    1191     1427
                        10/402 40x2                     2112     2378
                        10/41  40     53.2      67.8    1264     1607
                        10/412 40x2                     2411     2854
                        10/51  50     65.2      83.0    1580     2008
                        10/512 50x2                     2950     3744
                        10/514 50x4                     5155     5809
                        10/52  45x2   announced but never shipped
                        10/54  45x4   announced but never shipped
                        10/61
                        10/612
                        10/71
                        10/712

    SPARCcenter 2000
        Processor(s):   Mbus modules
        Motherboard:    501-1866/2334/2362
        Bus:            XDBus * 2, 20 slots; SBus @ 20MHz, 4 slots/motherboard;
                        Mbus, 2 slots/motherboard
        Memory:         5G physical
        Architecture:   sun4d
        Notes:          Dual XDBus backplane with 20 slots. One board
                        type that carries dual Mbus SPARC modules with
                        2M cache (1M for each XDBus), 512M memory and 4
                        SBus modules. Any combination can be used;
                        memory is *not* tied to the CPU modules but to
                        the XDBus. Solaris 2.x releases support an
                        increasing number of CPUs (up to full twenty),
                        due to tuning efforts in the kernel. First
                        supported in Solaris 2.2 (SunOS 5.2). Code name
                        "Dragon". 2.19 GIPS, 269 MFLOPS.

                        model  MHz  SPECint92 SPECfp92 SPECint  SPECfp
                        -----  ---  --------- -------- -Rate92--Rate92-
                        2108   40x8                     8047    10600
                        2216   50x16                   21196    28064

    SPARCclassic M
        Processor(s);   microSPARC @ 50MHz
        Memory:         96M physical
        Notes:          16M standard.

    SPARCstation 10M
        Processor(s):   SuperSPARC @ 36MHz, 86.1 MIPS
        Bus:            SBus, Mbus
        Memory:         512M physical, 32K cache
        Notes:          32M standard. 1.44M 3.5" floppy.

    SPARCserver 1000
        Processor(s):   Mbus modules
        Motherboard:    501-2336 (2338?)
        Bus:            XDBus; SBus @ 20MHz, 3 slots/motheboard;
                        Mbus, 2 slots/motherboard
        Memory:         2G physical, 1M off-chip cache
        Architecture:   sun4d
        Notes:          Single XDBus design with "curious L-shaped
                        motherboards". Three SBus slots, onboard FSBE,
                        512M, two CPU modules per motherboard. Four
                        motherboards total, or a disk tray with four
                        535M 1" high 3.5" disks (1G disks supported
                        recently). Code name "Scorpion". 135 MIPS. First
                        supported in Solaris 2.2 (SunOS 5.2).

                        model  MHz  SPECint92 SPECfp92 SPECint  SPECfp
                        -----  ---  --------- -------- -Rate92--Rate92-
                        1102   50x2                     2730     3681
                        1104   50x4                     5318     7076
                        1108   50x8                    10113    12710

    SPARCcluster 1
        Processor(s):   SuperSPARC @ 45MHz, 86.1 MIPS
        Bus:            SBus
        Memory:         1M off-chip cache
        Notes:          512M standard. A bunch of SPARCstation 10's
                        glued together with an switch (Alantec?
                        Kalpana?).

    SPARCstation 5
        Processor(s):   microSPARC II @ 70MHz, 85MHz, 110MHz;
                        57.0/64.0/? SPECint92, 47.3/54.6/? SPECfp92,
                        1352/1518/? SPECintRate92, 1122/1295/? SPECfpRate92
        Bus:            SBus
        Memory:         256M physical
        Architecture:   sun4m
        Notes:          16M standard in 70MHz model, 32M standard in
                        85MHz model. 8 SIMM slots, 8M or 32M SIMMs,
                        mixable except that any 32M SIMMs must be in
                        slots before any 8M SIMMs. Code name "Aurora".
                        Uses SCA connectors (see Misc Q&A #29) for
                        internal SCSI drives. Socketed CPU chip.

    SPARCserver 5
        Notes:          SPARCstation 5 without monitor/framebuffer.

    SPARCserver 20
        Notes:          SPARCstation 20 without monitor/framebuffer.

    SPARCstation 20M
        Processor(s):   SuperSPARC @ 50MHz, 86.1 MIPS
        Bus:            SBus, MBus
        Memory:         512M physical, 32K off-chip cache
        Notes:          32M standard. 1.44M 3.5" floppy.

    SPARCstation 20/xx
        Processor(s):   Mbus modules
        Bus:            SBus and Mbus; SBus for models 50 and 61 (and
                        possibly others?) @ 25MHz/64bits
        Memory:         512M physical
        Architecture:   sun4m
        Notes:          1.44M 3.5" floppy. 32M standard all models. Code
                        name "Kodiak". Uses SCA connectors (see Misc Q&A
                        #29) for internal SCSI drives. 16, 32, or 64M
                        60ns SIMMs. Some models (514, others?) use
                        double-width CPU modules that block SBus slots.

                        model  MHz  SPECint92 SPECfp92 SPECint  SPECfp
                        -----  ---  --------- -------- -Rate92--Rate92-
                        20/50  50     69.2      78.3    1628     1842
                        20/502 50x2                     2833     2995
                        20/51  50     73.6      84.8    1731     1995
                        20/514 50x4                     6034     6752
                        20/61  60     88.9     102.8    2092     2418
                        20/612 60x2                     3903     4645
                        20/71
                        20/712

    SPARCstation 4
        Processor(s):   MicroSPARC II @ 70MHz
        Bus:            SBus, 1 slot
        Architecture:   sun4m
        Notes:          Optional 16-bit audio, onboard framebuffer.


    Processor Data
    --------------

        SuperSPARC

   Texas Instruments TMX390Z50. On-chip 20K 5-way set-associative
I-cache, physically indexed and tagged. On-chip 16K 4-way
set-associative D-cache, write-back, physically indexed and tagged.
65536 hardware contexts. FPU and SPARC Reference MMU on chip. SPARC
Reference MMU has in-memory 3-level page tables, similar to a
"de-baroqued subset" of the 68030 MMU, but with Sun-MMU-style contexts.
Code name "Viking".

   "When the SuperSPARC Multi-Cache Controller is used in the Mbus
configuration, it supports either no E-cache or 1MB of E-cache. When the
MCC is used in the X[D]Bus configuration, it supports a variety of
E-cache sizes: none, 512Kb, 1Mb, or 2Mb." -- Texas Instruments
SuperSPARC User's Guide, Alpha release.

        microSPARC

   Texas Instruments TMX390S10. On-chip 4K I-cache. On-chip 2K D-cache.
64 hardware contexts. FPU and SPARC Reference MMU on chip. SPARC
Reference MMU has in-memory 3-level page tables, similar to a
"de-baroqued subset" of the 68030 MMU, but with Sun-MMU-style contexts.
Code name "Tsunami".

        microSPARC II

   Fujitsu MB86904. On-chip 16K I-cache. On-chip 8K D-cache.FPU and
SPARC Reference MMU on chip.

        SF9010/MB86900

   These two are the same chip; Fujitsu simply renamed it. The FPC
portion was later given the separate designation MB86910 (?).

        ROSS RT601/Cypress CY7C601

   These two are the same chip, renamed when Cypress sold ROSS
Technology to Fujitsu. No on-chip cache.

        ROSS RT602/Cypress CY7C602

   These two are the same chip, renamed when Cypress sold ROSS
Technology to Fujitsu.

        ROSS RT605/Cypress CY7C605

   These two are the same chip, renamed when Cypress sold ROSS
Technology to Fujitsu. 64K unified cache which can run in either
write-through or write-back mode; SunOS/Solaris uses write-back. SPARC
Reference MMU with 4096 contexts.

        hyperSPARC

   ROSS RT620 IU/FPU and ROSS RT625 MMU/cache controller. On-chip 8K
direct-mapped I-cache, 128K or 256K external (?) unified cache which can
run in write-through or write-back mode; SunOS/Solaris uses write-back.
SPARC Reference MMU with 4096 contexts. Code name "Pinnacle".

              END OF PART I OF THE SUN HARDWARE REFERENCE




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