Subj : Play audio from a serial port
To   : Bob Worm
From : Spectre
Date : Tue May 28 2024 05:07:00

 BW>  > Ohhhh if its running interpreted BASIC I completely understand the
 BW> serial
 BW>  > speed problems.  Based on the serial port speeds I assume there's no

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

Sounds a little like the A2.  It had an ACIA :), no UARTs in sight.  Off
hand I forget what the ACIA acronym stands for... asynch communications or
some such.  Most common on 6502s was the 6551 chip. Capable of 19.2k if you
could drive it.  Otherwise the only odd bod I know of.. actually there's 2,
is the C64 and early IIc models which are just bit banging.

Most of the A2 software was written in Applesoft, interpreted ms-basic.
You'd have ASM or ML code to call too get the IO done.  Load it with what to
send and call the subroutine to do it.

Spec


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