IIsi Boot Issue

  • Nominations will close March 25th. If you'd like to join the board and influence how TinkerDifferent runs in the next year, put your name in now!
  • Hey Guest, MARCHintosh 2026 is upon us. Check out community projects, join GlobalTalk, and have fun!
W

Willj

Tinkerer
Apr 28, 2022
69
49
18
Looking for some guidance on what to check etc.

I have a IIsi that will only boot when it has simms in all 4 slots. Remove the simms I get chime but no boot. Note this logic board has 1mb-8 chips on board. Could this be the issue?
 
Nixontheknight

Nixontheknight

Tinkerer
Nov 3, 2021
204
38
28
Willj said:
Looking for some guidance on what to check etc.

I have a IIsi that will only boot when it has simms in all 4 slots. Remove the simms I get chime but no boot. Note this logic board has 1mb-8 chips on board. Could this be the issue?
Click to expand...
the iisi uses some of the onboard ram as video memory, so it is crucial that there is memory in the slots so it can operate with a usable amount of memory
 
robin-fo

robin-fo

Tinkerer
Feb 17, 2022
166
77
28
Switzerland
I think you should be able to boot System 6 with no SIMMs installed.. If you have SIMMs installed, they need to be identical and all four sockets must be populated.

To boot System 7, you need at least 2MB, so at least one additional Megabyte needs to be installed in the sockets.
 
You must log in or register to reply here.
Top Bottom