17 Aug
2015
17 Aug
'15
2:29 a.m.
On Sun, Aug 16, 2015 at 6:20 PM, drlegendre . <drlegendre at gmail.com> wrote:
What I did learn is that Z-80 were made in CMOS
versions, and the Z84C is
one.
So what did I most likely do, here? Hose the CPU for sure? Collateral
damage on the board? Both / Neither?
Actually it's surprising that the CMOS Z80 didn't work. The CMOS parts
are intended to be a drop-in replacement for the NMOS; unless they
have an "L" suffix, they are 5V, with TTL-compatible input thresholds.
I've replaced NMOS Z80 parts with CMOS equivalents in a number of
systems without difficulty.