27 May
2008
27 May
'08
6:37 p.m.
Hi,
Has anyone have or know where to get an IBM XT (5160) diagnostic ROM? I am
trying to revive an original IBM XT motherboard which is nonresponsive and
gives no error codes (beep or POST).
I am not even sure such a ROM exists but it would be a 27C256 style EPROM
that plugs into an IBM XT motherboard to help fault isolate an almost
completely dead unit.
The motherboard CPU seems to be working based on a quick exam with the
oscilloscope. However, the motherboard's initialization / boot process is
not making it to start up the video display before it hangs or crashes.
Obviously, something is broken but I haven't isolated exactly what yet.
If anyone can help, I would much appreciate it. Thank you in advance.
Andrew Lynch