Originally Posted By Haze
Originally Posted By R. Belmont
Yeah, clearing reset AFAIK doesn't actually run the Z80 if the bus is held, so it shouldn't start running until step 5.

From what I remember that's correct, it shouldn't run unless it's got the bus, and the reset line has been cleared.

In both reset high and non-bus state the z80 goes nowhere, and afaik that's how it used to behave.

I have sent a patch to fix this to the mamedev mailinglist, awaiting comments...