z80 timing... 6502 timing

From: Allison J Parent <allisonp_at_world.std.com>
Date: Sat Apr 17 14:32:53 1999

<I've been told, can't prove it, though, that the NEC version of the Z-80
<didn't have that "bug" (short for undocumented feature, as in "one man's
<feature is another man's creature") that in certain instances the flags wer

Did not have that "bug". I don't know that any z80 had it. It was exact.
What was missing was a odd address bus burp during t3-t4 transistion. If
your design compensated for it the NEC part didn't hurt you and if you
didn't It might help.

Now the z180 between zilog and hitachi had bugs. The Z280 was buggy too.

Allison
Received on Sat Apr 17 1999 - 14:32:53 BST