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8-bit acorn emulators • Re: b-em a little help with mmf image please

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I can get DIN and DOUT to work, but any other commands seem to fail, for example DCAT and DDRIVE from give Bad Command.
The MMB access for B-Em was originally written to enable one of the MMB games menu to run (Tricky's?) and implemented only the commands used by that menu program. There is a new branch with the full set of commands at: https://github.com/stardot/b-em/tree/sf/mmb-mzone2

There isn't any separate documentation, though now the full set of commands is implemented the document for MMFS should now be applicable.

There are a couple of quirks, though. Because this uses unmodified DFS, it can't return an immediate error for "no disk in that drive". If an MMB file is loaded this takes over one or both drives depending on the boot disks selection inside the MMB file. If there is no boot disc for a particular drive, or of both discs are removed with *DOUT on that drive, DFS will then try to access to the real floppy. You can use this to advantage in being able to *COPY between SSD files stored directly on the host and SSD disks within the MMB file.

Any other questions do let me know.

Statistics: Posted by Coeus — Tue Jan 30, 2024 11:28 pm



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