My device outputs information serially, I am trying to interface it with an 8255 PPI (Parallel Port Interface) and then to the microprocessor at DOS level.

I am looking for something that will allow me to change the serial info. to parallel so I can use it as inputs to my ports. Or some other scheme that might work.

I am looking at the USART but unsure if it will work.

Any suggestions, please let me know.

 

Actually the U(S)ART is how it's done since it interfaces to the uP directly and does the S-P and P-S conversion. A lot of recent uPs have some sort of serial capability integrated even if it's only bit banging for a two wire "onboard" bus. But the U(S)ART is the way to go if you are going to talk to "standard RS 232" because it does a
lot of things you need.

Regards

cww