On 05/15/22 18:00, cctech-requ...@classiccmp.org wrote:
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> On May 15, 2022, at 2:51 PM, Chris Quayle via cctech
> wrote:
>
> ...
> Original 74 series TTL can still be found, Ebay often, new old stock
> and other surplus vendors.
>
> Would need to take care replacing with later ttl series, as the gate
> delay, switching times and fanout probably
