| Online Sun Information ArcHive | |
| Aliases | |
| Date | |
| CPUs | 1 |
| Clock speed | 25 MHz (20 MHz co-processor) |
| Processor | Motorola 68020 |
| Co-processor | Motoroal 68881 |
| MMU | Sun-3, 8 hardware contexts |
| Motherboard | 501-1100, 501-1206 |
| On-chip cache | |
| External cache | 64 KB: write-back, direct-mapped, virtually-indexed, virtually-tagged, 16-byte lines, 80ns cycle |
| Memory |
64 MB,
256 MB virtual
Uses ECC memory. Up to 8 MB VME boards. Sun 4/2xx 32 MB boards work up to 128 MB. |
| Speed | 4 MIPS |
| Chassis type | deskside |
| Bus | (12) VME slots, board size 9U |
| Ports |
(2) serial ports.
(1) AUI ethernet. (1) ECL graphics. (1) type 3 keyboard and mouse. |
| Internal storage | In the upper third is a compartment for two disks (5.25" full height devices) and one tape drive or CD-ROM. |
| Graphics |
There is a black & white high resolution graphics card on the motherboard.
Color VME-Bus graphics cards can be used also. |
| Power supply | 1000 watt |
| Architecture | sun3 |
| OS's supported |
First supported in SunOS 3.0.
Last supported in SunOS 4.1.1U1. |
| Notes |
Code-named "Sirius".
First sun with an off-chip cache. Third party memory boards had up to 32 MB on one VME card. SCSI optional. Upgradeable to a 4/260 by replacing the motherboard. |
| Comments | |
| See also.. | 4/260 |
Last modified: 2000.10.19.20.39.44 CDT Server time: 2008.08.30.07.30.48 GMT