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More TD0 bug fixes - fixed handling of sectors without an ID field, and fixed the handling of TD0 images recorded at 300 kbps on a 360 rpm drive (which is equivalent to 250 kbps on a 300 rpm drive), fixes Sid Meier's Pirates!

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OBattler
2019-12-06 02:37:52 +01:00
parent b9a35eb418
commit ce9408a817
2 changed files with 25 additions and 14 deletions
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11
src/floppy/fdd_86f.c
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@@ -10,7 +10,7 @@
* data in the form of FM/MFM-encoded transitions) which also
* forms the core of the emulator's floppy disk emulation.
*
* Version: @(#)fdd_86f.c 1.0.19 2019/12/05
* Version: @(#)fdd_86f.c 1.0.20 2019/12/06
*
* Authors: Miran Grca, <mgrca8@gmail.com>
* Fred N. van Kempen, <decwiz@yahoo.com>
@@ -1260,18 +1260,19 @@ d86f_word_is_aligned(int drive, int side, uint32_t base_pos)
d86f_t *dev = d86f[drive];
uint32_t adjusted_track_pos = dev->track_pos;
if (base_pos == 0xFFFFFFFF) return 0;
if (base_pos == 0xFFFFFFFF)
return 0;
/*
* This is very important, it makes sure alignment is detected
* correctly even across the index hole of a track whose length
* is not divisible by 16.
*/
if (adjusted_track_pos < base_pos) {
if (adjusted_track_pos < base_pos)
adjusted_track_pos += d86f_handler[drive].get_raw_size(drive, side);
}
if ((adjusted_track_pos & 15) == (base_pos & 15)) return 1;
if ((adjusted_track_pos & 15) == (base_pos & 15))
return 1;
return 0;
}