YT vid of Peter Sampson playing more music on the CHM PDP-1

[Bill E]

If you haven't seen this, good closeups of how you used a -1. Has a little graphic partway thru that shows a simple explanation of how the sound is generated. https://www.youtube.com/watch?v=wubkrBd3-gg

Here's an impressive bit of lore I learned.. the source for Peter's music program was lost. He just sat down and rewrote it from memory. In assembler, of course.

Bill

[Bill E]

Sigh, I should at least spell his name correctly. Samson.

[Bill E]

Incidentally, if you watch carefully you will see a difference between how the actual -1 works and pidp1 works regarding the tape reader. In order for the real reader to read, the reader switch at lower right needs to be on. In the pidp1 emulation, that switch seems to do nothing. The switch turns on the reader feed motor it seems.

Bill