Z80 / Z84C Swap (Doh!)

Eric Smith spacewar at gmail.com
Sun Aug 16 21:29:10 CDT 2015

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.

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