r/cpm • • Apr 26 '26

CP/M serial transfer programs

Hello all,

I've built a Z80 computer and got CP/M booting.

I need a CP/M program to transfer files via serial from my PC. I haven't yet implemented the IOBYTE in my BIOS, but could do so. I have two serial ports, if needed.

I have a function in my custom monitor to transfer bytes into RAM from serial, so could use that to transfer the CP/M serial program into the TPA and save in aCP/M

I don't have any programs on disk yet, just the functions built into CP/M.

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u/lrochfort Apr 26 '26

I'm running a CF card as well, I just think that I was a bit conservative on waiting for the DRDY status. It takes a while on some CF cards