Hallo Bo,
I can give some other advices. By tying the WAIT-input to GND you stop the
Z80. AFAIK the Z80 immediatly starts at address $0000 after a reset. As the
Z80 doesn't do anything at all now, you can use a digital Voltmeter to check
the state of various address- and controllines. Including those of a buffer
as Richard suggested.
A step further is disabling the Z80 by pulling BUSRQ Low. Now you can feed
the address- and other lines with your own signals and see if the PLA, MMU
and other ICs work as they should do.
FYI: the 8088 board has been "schematiced" for about 75%.
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/ __|__
/ / |_/ Groetjes, Ruud
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\___| http://Ruud.C64.org
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