11 May
2019
11 May
'19
11:40 a.m.
On Sat, 11 May 2019, Chuck Guzis via cctalk wrote:
In the case of RX50 on the PC, it doesn't matter.
The format is 10
sectors of 512 bytes, which isn't supported by the PC BIOS in any
regular sense (9 sectors is the norm). So most packages that deal with
FILES-11 RX50 floppies on a PC use direct hardware (chip) access and
bypass the BIOS completely. PUTR is one such package.
If the only problem is that there are 10 sectors per track, that can still
be done WITH THE BIOS, using Int1Eh in conjunction with Int13h, except
for the potential problems with 765 index "flash blindness". For
formatting tracks, you can use Int1Eh to alter the sector gaps.