If you are told to use an 8255 refuse, if the refusal does not work, stamp your little feet in the ground, if that does not work, go cry. Then do as your suprevisor or teacher tell you to do and CLARLY mark all schematics with "8255 used under protest"


Then, what sort of processor WOULD you choose Erik? The reactors I know of use 'em right and left. 192 outputs is not a big job. It takes only eight 8255's. No matter what sort of processor you use, you still have to provide the I/O. How would YOU do it?
I'd use one with 32 or 64 bit wide I/O and I would use 'regulat latches - cheaper, faster, easier to use that the antique


It's easy to say, "It's old, it's slow, it's this, it's that," but coming up with a positive construct is not so easy.
It is DEAD EASY to "come up with a positive construct" if you know what it is to do. The way you phrase the question is akin to "how do i" without EVER saying WHAT. I can "come up with a positive construct" to any place where you and other antique collectors would use an 8255 if you would state WHAT FOR

applea, apples, apples and oranges and oranges and oranges GET IT
This clearly states how you can, if you'll get your head unwedged, demonstrate that the 8255 will work just fine with this "modern technology."
What it does is that it , to use your bullshit expression, clearly states that you can use the 8255 with modern technology, if it was a mistake in the first place to use modern technology so you have to slow the modern technology down to work just as the antique shit Richard prefer

Richard, you keep accusing me of not answering and you keep stating "if you convert your fast processr to a piece of slow crap you can do it" is converting modern technology to act as old shit making use of modern technology?

Erik