80486DX2-66/86Box-fork
1
0
Fork 0
Code Issues Pull Requests Activity

HxC MFM format: Add heuristic to default to a sane RPM when the RPM in the image is set to 0, fixes #4357.

Browse Source
This commit is contained in:
OBattler
2024-07-25 00:46:33 +02:00
parent 0fe7d449ad
commit f36c813ca5
1 changed files with 8 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
src/floppy/fdd_mfm.c
View File

@@ -450,13 +450,20 @@ mfm_load(int drive, char *fn)
}
if (!(dev->hdr.if_type & 0x80)) {
pclog("Bit rate = %i\n", dev->hdr.bit_rate);
dbr = round(((double) dev->hdr.bit_rate) / 50.0) * 50.0;
dev->br_rounded = (int) dbr;
mfm_log("Rounded bit rate: %i kbps\n", dev->br_rounded);
pclog("Rounded bit rate: %i kbps\n", dev->br_rounded);
dbr = round(((double) dev->hdr.rpm) / 60.0) * 60.0;
pclog("RPM = %i\n", dev->hdr.rpm);
if (dev->hdr.rpm != 0)
dbr = round(((double) dev->hdr.rpm) / 60.0) * 60.0;
else
dbr = (dev->br_rounded == 300) ? 360 : 300;
dev->rpm_rounded = (int) dbr;
mfm_log("Rounded RPM: %i kbps\n", dev->rpm_rounded);
pclog("Rounded RPM: %i kbps\n", dev->rpm_rounded);
}
/* Set up the drive unit. */