Two things make it particularly interesting. First, it uses the MC68030 cpu. Second, it is one of the last m68k machines Sun ever made.
From the hardware FAQ:Processor(s): 68030 @ 20MHz, 68882 @ 20 or 40MHz, 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. Boot ROM versions 3.0.2 and later allow using 4M SIMMs in some slots for up to 40M.My notes (based on the board I have):
Place the board with the connectors towards you.
This will cause the memory slots to lean away from you.
You have 8 on the right and 8 on the left.
Let's number then from 1 in the front (close to us) and 8 in the back (far away).
To install 4M of ram you put ram into slots 1 and 5 on the left and right.
To install 8M of ram you put ram into slots 1, 3, 5, and 7 on the left and right.
You can use 4M modules, but apparently only in the first two banks.
What is a bank? We have 4 banks.
If we load 4M modules into banks 0 and 1, then 1M modules into banks 2 and 3, we get 4*8 + 8 =32 +8 = 40M.
I don't know what sorts of RAM modules I have, but I have a bunch stored with the Sun3 that I can play with.
J1000 1-2 OUT Watchdog reset(test) J020 1-2 IN 68882 20MHz 2-3 OUT 68882 40MHz J043 2-3 IN RS232C (-12V) J043 1-2 OUT RS423 (-5V) J044 2-3 IN RS232C (-12V) J044 1-2 OUT RS423 (-5V)I don't see myself needing or wanting to change any of these jumpers.
Connect a serial terminal to port a (25 pin) 9600 baud, 8 bits, no parity. L1-A on a real keyboard gets you to the PROM. Once there, see these notes.
Tom's Computer Info / tom@mmto.org