8-bit acorn hardware • Re: Pi1MHz Software

The same program that calls OSWORD &7F works fine on my Master with MAMMFS, also with a PiTubeDirect. This is with a different Pi1MHz, however.

Is that also with version 1.59 of MMFS?

Just to confirm, you are seeing OSWORD &7F hanging on reads?

I've just tested a similar configuration:
- Model B
- Pi1MHz v1.18 (Pi1MHz_20241202_2009_root.zip) on a Pi Zero W
- PiTubeDirect Indigo Alpha 9 on a Pi Zero 2
- Pi1MHz MMFS 1.59 (I tested both the normal and sideways RAM versions)

My test case was booting CP/M which I believe relies on OSWORD &7F.

Any chance you could post the program you are using to test OSWORD &7F, in case it's somehow peculiar to that?

Dave

Statistics: Posted by hoglet — Mon Dec 01, 2025 5:46 pm

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