« previous next »
Pages: 1 ... 5 6 [7]   Go Down

Author Topic: Sys 80 Non CPU boot/IRQ issue  (Read 2319 times)

0 Members and 1 Guest are viewing this topic.

Offline MartyJ

  • Trade Count: (+4)
  • ******
  • High Score Initials:
  • Forum Posts:
    • Melbourne
Re: Sys 80 Non CPU boot/IRQ issue
« Reply #90 on: May 31, 2009, 05:48:42 PM »
With mod removed:

U5 pin 15=low
Z26 pin 12=low
Z26 pin 13=high

IRQ still locked at high, no pulse.

OK, I understand re the hi/lo signals.  I thought this was something you were deciphering from the schematics... ^^^
Logged
Pages: 1 ... 5 6 [7]   Go Up
« previous next »