cem@intelca.UUCP (Chuck McManis) (04/03/84)
I am looking for a source of Floppy Disk formats for both 8" and
5.25" floppy formats. I am running a CP/M system with both types
of drives and would like to write an anything to anything utility.
Hopefully Someone will know of a pointer or compendium of formats?
Also does anyone have the ORIGINAL IBM 3740 Format specification and
the System 34 Format specs ? Thanks,
--Chuck
Usenet: {ucbvax!amd70,hplabs,pur-ee}!intelca!cem
ARPA: "amd70!intelca!cem"@UCB-VAXbraun@drivax.UUCP (Karl Braun) (06/18/85)
[obligatory offering to non-existant bug]
Long, long ago, in a galaxy far, far away, there was a world which used single
density 8" diskettes. Then along came better technology, and lo, there was
double density 8" diskettes. But existing boot roms didn't know how to read
double sided diskettes, so OEMs began mixing the format of their disks, using
single desntiy for the boot tracks, and double density for the rest of the
disk.
So a question comes up:
In DOSland, is there a significant number of OEMs still using mixed density
8" disks? For that matter, has anyone ever come across mixed density
mini-flops? And finally, on a slightly different subject, has anyone noticed
any floppy formats on double sided diskettes on which the track numbering is
other than "down the cylinder" (track 0 is on hd0, track 1 is on hd1, track 2
is on hd0, cylinder 1, etc)?
I am interested in any information relating to the above.
thanx in advance!
--
kral
ihnp4!-------- \
mot! ---------- \
ucbvax!unisoft! > drivax!braun
ucscc!--------- /
amdahl!------- /
(
Obligatory silly quoted:
Definition of "Spunk": A small black and white animal that spells bad.
:-)alan@drivax.UUCP (Alan Fargusson) (06/19/85)
> [obligatory offering to non-existant bug] > > Long, long ago, in a galaxy far, far away, there was a world which used single > density 8" diskettes. Then along came better technology, and lo, there was > double density 8" diskettes. But existing boot roms didn't know how to read > double sided diskettes, so OEMs began mixing the format of their disks, using > single desntiy for the boot tracks, and double density for the rest of the > disk. > > So a question comes up: > > In DOSland, is there a significant number of OEMs still using mixed density > 8" disks? For that matter, has anyone ever come across mixed density > mini-flops? And finally, on a slightly different subject, has anyone noticed > any floppy formats on double sided diskettes on which the track numbering is > other than "down the cylinder" (track 0 is on hd0, track 1 is on hd1, track 2 > is on hd0, cylinder 1, etc)? The iNTEL 310 has this problem with 5-1/4 disks. The boot track has to be single dinsity 128 bytes/sector. The rest of the disk can be any size except that there is a bug that prevents 512 byte sectors from working, so we had to put a driver on the boot track to read the UNIX kernel. It is very anoying. The winchester drive is similar except that the boot track has to be 1024 byte sectors. System V just doesn't work with 1024 byte sectors. Swap and physio get confused. More anoyance. In fact the code for the 1024 byte file (FsType 2) system was not complete until we ported it. A bit more anoyance. -- Alan Fargusson. { ihnp4, amdahl, mot }!drivax!alan
jss@sjuvax.UUCP (J. Shapiro) (06/23/85)
> > Long, long ago, in a galaxy far, far away... > > The iNTEL 310 has this problem... Are there any problems that the Intel 310 DOESN'T have? Jonathan Shpairo Haverford College Disgruntled Intel-310 abuser.