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@hharte hharte commented Aug 17, 2025

AltairZ80: wd179x: Better support for 5.25-inch floppies.

Summary

Allow wd179x to support both 360 RPM (8") and 300 RPM (5.25") drives.

Compiled with:

  • VS 2022 17.14.12 - vcxproj
  • MSVC 19.44.35214.0 - CMake
  • MacOS (x64) clang-1700.0.13.5
  • Linux gcc 12.2.0-14

Automated tests:

SIMH running on Windows, Linux (ARM), MacOS (x64):

CompuPro CP/M-80
CompuPro CP/M-86
SCP 86-DOS
MS-DOS 2.11 - Builds MS-DOS 2.11 from source.
CompuPro CP/M-68K v1.3 (68000 and 68010 versions)
CP/M-68K v1.2
Advanced Digital Super-Six CP/M 2.2
Advanced Digital Super-Six CP/M 3.0
DIGITEX CP/M 2.2
DIGITEX CP/M 3.0
DIGITEX OASIS multi-user version 5.6
MultiStar: IBC OASIS multi-user version 5.6
MegaStar: IBC OASIS multi-user version 5.6
CP/M-80 (Altair) ZEXALL Z80 instruction set test.
CP/M 3 (Altair) Banked Memory Test.

FYI, @psco, @deltecent

@markpizz
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@psco does this look good to you?

@psco
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psco commented Aug 31, 2025

Thank you Howard, this looks fine and can be merged.

@deltecent
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@hharte would you please remind me how to do those automated tests? I have PR coming that also changes wd179x.c.

@deltecent
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Found it! altairz80-tests.

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4 participants