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 CLEARLY mark all schematics with "8255 used under protest"

I take that you refer to this: R: 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? E: I'd use one with 32 or 64 bit wide I/O and I would use 'regular' latches - cheaper, faster, easier to use that the antique

Where did I say ONE? and the most usual latches are 8 bits so the question should have been "what about the other 184 bits?"

With as 32 bit wide I/O bus e.g. an ARM derivative, only 3 strobe bits would be rquired.

I would rather use 24 small SOIC 8 bit latches and run full speed than 8 HUGE sloooooow DIL/PLCC antiques. Really I would use neither, I would use a CPLD/FPGA were I to do such a thing.
Of course were the speed requirements not dramatic (as in an 8255 could be used) I could go serial with 3 IIC lines each driving 8 8 output devices (or each driving 4 16 output devices). Even go totally modern and use the PCA9698 which gives you 320 I/O for two uC pins.
If speed was even less of a concern (and can you even wisper "speed" when the 8255 is involved) it could be with 24 serial/parallel shift registers another simple solution.

Erik