|Online Sun Information ArcHive|
|Clock speed||25 MHz (20 MHz co-processor)|
|MMU||Sun-3, 8 hardware contexts|
|External cache||64 KB: write-back, direct-mapped, virtually-indexed, virtually-tagged, 16-byte lines, 80ns cycle|
256 MB virtual
Uses ECC memory.
Up to 8 MB VME boards.
Sun 4/2xx 32 MB boards work up to 128 MB.
|Bus||(12) VME slots, board size 9U|
(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.|
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|
First supported in SunOS 3.0.
Last supported in SunOS 4.1.1U1.
First sun with an off-chip cache.
Third party memory boards had up to 32 MB on one VME card.
Upgradeable to a 4/260 by replacing the motherboard.
Last modified: 2000.10.19.20.39.44 CDT Server time: 2017.03.26.20.49.11 GMT