erik malund wrote:
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Anyhow, memory mapped, while it can be done with latches and decoders is sooooooo much easier with a PLD.

I prefer only using devices I can program - so the only "PLDs" I can use are EPROMs ;-)

I am, by the way, known to "hate" the 8255 since it usually creates more problems than it solves

I don't find the 8255 particularly interesting, especially considdering it's strange behaviour when changing modes. But a lot of people seem to like them...

Ha' en god paaske

Tak i lige måde!

Best regards,

Mikkel C. Simonsen