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jwestfall69 / neogeo-diag-bios

Disassembly of smkdan's Neo Geo Diagnostics BIOS with added features
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z80 ram OE stuck low or floating issue #9

Closed jwestfall69 closed 4 years ago

jwestfall69 commented 4 years ago

If z80's ram is stuck low or is floating all of the psub based tests pass, which includes ram, but we eventually crash or go bonkers when doing the call based tests.

I would think this would be causing a data bus conflict right on boot, so its unclear how we are even running at all.

jwestfall69 commented 4 years ago

This is fixed in commit 556c761a27e8503f6a565036be85be96e73d5066