READIMG.EXE and WRITEIMG.EXE are MS-DOS executables which does not run with Windows 2000/XP,
because they use direct BIOS interrupt/calls.
READIMG was designed to read also non MS-DOS floppy disks like CP/M-86 or MSX floppies.
A CP/M-86 5.25" floppy disk uses 2 sides, 40 tracks with 8 sectors if 320KB is the total capacity.
A CP/M-86 and also a MS-DOS DS/DD floppy disk uses 2 sides, 80 tracks with 9 sectors if 720KB is the total capacity.
A MS-DOS DS/DD 5.25" floppy disk uses 2 sides, 40 tracks with 9 sectors if 360KB is the total capacity.
A MS-DOS DS/HD 3.5" floppy disk uses 2 sides, 80 tracks with 18 sectors if 1440KB is the total capacity.
A MSX floppy disk uses 1 side, 80 tracks with 9 sectors if 360KB is the total capacity.
A MSX floppy disk uses 2 sides, 80 tracks with 9 sectors if 720KB is the total capacity.
WRITEIMG was designed to write also non MS-DOS floppy disks too.

If a disk was changed, a DISK CHANGE error could occur. In that case just repeat the program run.
Unknown error 03 is typically a readonly marked floppy disk.

Peter Dassow in March 2007 (again, because I wrote a similar program in 1998, but I lost the source)
Write suggestions to peter.dassow@z80.eu
