I ought to know but I can't remember. There's a datasheet on my web site
formatting link
You could also ask in comp.os.cpm, lots of Z80 gurus thereHans
Hi There!
>
> Does anybody know if /ACK goes high when you hold /RESET down and if this
> would be a reliable way to determine if the address- and databus have gone
> high-z? ( ie. after ~90ns stated in the docs? )
>
> -Yvo
>
>