(05-09-2021, 08:03 AM)gentle1 Wrote: The PCG chess, I think it was Sargon, looks very familiar.
...
I haven't been so lucky with all of my tapes, but have spent some time in the application Audacity to fix the glitches.
Hi Bruce, a great guess!
The source code was published as a book by the authors Kathe and Dan Spracklen as "SARGON A COMPUTER CHESS PROGRAM" ISBN 0-8104-5155-7.
The PCG version is exactly this tuned for use with the DG640 and TCTPCG.
Someone's trick with tapes is to use the purpose built Micron Data Tape Recorder (Altronics) from Bill Edge's Electronic Agencies.
Many standard tape recorders were rather finicky they have ALC (Automatic Level Control) tuned for listening music and speech which didn't respond well to FSK modulated signals.
One spent many hours adjusting the volume and tone controls to getting tapes to load.
The Micron unit has a handy Tape monitor switch that allowed the user to hear the tape tones during playback.
It even has a 2.5mm pencil socket for tape motor pause that the SECI and USCI used.
Cheers
Someone