Emudreams(1996) NEWS FROM 60 DAYS MUSEUM

Altirra 4.00 test8 [1096][witek], 2020-08-24 13:18:32

[Source: https://atariage.com/forums/topic/308053-altirra-390-released/page/9/#comments]

- ATR loader now recognizes 8" disk geometries with 77 tracks. These now get set up with 26 sectors/track and with an appropriate interleave for the ATR8000 (the only currently emulated drive type that legitimately supports 8" drives).
- Percom RFD-40S1 double-clock mode is now also supported, though it doesnt work well with the stock firmware. 8" mode can be set through the PERCOM block, but the firmware doesnt know how to format a disk at 360 RPM.
- Added support for the Happy 810 Autospeed mod, with the ability to slow the down to 285 RPM.
- The .disktrack debugger command now handles tracks with more than 18 sectors/track.
- Fixed a bug in the ATR writer that produced corrupted disk images when formatting a double-density disk with a full drive emulator. This happened because the boot sectors are physically 256 bytes on disk, but the ATR writer didnt properly handle these when trimming them to 128 bytes for the file output.
- Fixed a bug with full drive emulators where sometimes the last write to a disk wouldnt trigger the auto-flush, so the disk would stay in modified state until another write had occurred.
- Fixed corruption of the first byte sent by a 810 or 1050 based full-drive emulator after cold reset, due to the power-up state being wrong -- the output is actually low on reset.
- Recalibrated the delay timings in the standard disk emulator for the Status and Read PERCOM Block commands, which were too low for some of the third-party drives. In particular, this fixes TOPDRV.SYS.
- Fixed regression with the interrupt/proceed cassette turbo modes not working.

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