Subj : Play audio from a serial port
To   : AKAcastor
From : Bob Worm
Date : Mon May 27 2024 06:01:13

  Re: Play audio from a serial port
  By: AKAcastor to Bob Worm on Sun May 26 2024 15:44:28

Hi, Chris.

 > Ohhhh if its running interpreted BASIC I completely understand the serial
 > speed problems.  Based on the serial port speeds I assume there's no UART
 > buffer - sounds like a good test of your optimization abilities!

There is some kind of buffer but I guess it's in system RAM rather than in the controller itself. For sure you need to go assembler to reliably drain it out before it fills :)

 > If you're thinking about showing it off in videos, I'll be watching. :)

I did film an intro to begin a series on it, then I broke it (again) so didn't film the rest. When it first came out of storage the serial Tx driver chip was dead, it caught a bit of Varta juice but was only on the fringes so I was surprised that died out of all the chips. I managed to source new old stock for it, seemingly the last ones anywhere, and replaced it. Then several months later the Rx died, sadly in replacing that the traces and pads pretty much all came off the board (much closer to the CMOS battery) so there's a more "creative" repair on that and it's... iffy. I will have it back to fill functionality at some point, I'm sure.

BobW
--- SBBSecho 3.20-Linux
 * Origin: >>> Magnum BBS <<< - bbs.magnum.uk.net (21:1/205)

.