On 4/13/2020 6:46 PM, Billy wrote:
There are differences in the uarts over the decades. But I'm not
sure it's near as much of an issue as the typical USB to Serial
Remember, 16550's became a thing in 286 days, and by 386
timeframe was increasingly the norm. Many of the "you have to use
an old laptop" computers used successfully for DOS based RSS/CPS
But if it is an issue with dosbox and windows, I found one
writeup from a british ham that had the magic answer.
The trick is to go into Windows Device manager, open the serial
device advanced properties for the device in question, and set the
buffer to 0. That's usually all it takes.
I had several work before I learned this trick, but now I do this
if I see any serial issues with older SW.
But the biggest single issue I've seen is non-FTDI USB to Serial
adapters. The Prolific brand usually will not work with DOS based