> On Feb 4, 2022, at 7:10 PM, Rob <r...@bell.net> wrote: > I'm just playing around with the basic software. The question I have, is > there a peek and poke to turn on relay 1.
I've spent pretty much no time on cassette functions for personal reasons but as far as I'm aware the high level way to control the cassette motor is the BASIC command "MOTOR", which can be called as "MOTOR ON" or "MOTOR OFF". It is documented on page 160 of the User's Guide. You could also rummage around that fancy new disassembly of the ROM to find out what it's up to when it does that: https://github.com/z88dk/techdocs/blob/master/targets/m100/m100.asm#L7563
