28 Jan
2012
28 Jan
'12
2:27 p.m.
On Sat, 28 Jan 2012, Dave Dunfield wrote:
After reading recent comments (including my own), and
thinking
about it for a bit - I came up with a way to make images of my
SuperBrain disks.
Seems like the "smart" disk controller in my SuperBrain always
formats with non-standard address marks.... but since it can read
and write the CompuStar disks, it does not seem to have trouble
accessing disks with standard address marks.
That technique works for MOST formats with address mark issues.
Unfortunately not some of the TRS-DOS address mark issues.
There are several formats in XenoCopy, where it is necessary to
generate a formatted disk for the alien format using the PC,
copy the files on the alien machine to the "pseudo" disk,
and then bring the "psuedo" disk back to the PC for conversion.
That is also applicable for quite a few formats, such as double
sided Kaypro, where the computer writes sector headers with invalid
side numbers, but doesn't object to reading nor writing sectors that
happen to have correct sector headers.
In addition to address marks, disks with 10 * 512 have a crowded track,
and may take liberties with tht length of the index gap and inter-sector
gaps.
The very visible inverted data is merely a trivial inconvenience in
comparison.
I've posted these "slightly modified"
images of my original CP/M
and ZCPR disks for the SuperBrain to my site - look for "Intertec
SuperBrain" under "System disks".
THANK YOU!!
That should help a lot of people.
--
Grumpy Ol' Fred cisin at xenosoft.com