3 Aug
2005
3 Aug
'05
2:37 p.m.
> IIRC, the Ensoniq Mirage had mixed sector sizes.
On Wed, 3 Aug 2005, Ethan Dicks wrote:
Hey... I have one of those - it used to belong to my
mother (she was a
professional musician).
I'd love to have a way to image disks for it. I think I remembered
the disks were wierd, but not how they were wierd.
I don't have any of my notes handy, but IFF I remember correctly
(y'all know what happens to unrefreshed dynamic RAM)
The Ensoniq Mirage did NOT have mixed density, just mixed sector sizes.
Plain ordinary MFM, with something on the order of 5 1024 byte sectors,
and one 512 byte. (or maybe 9 512 bytes and one 256 byte)?
I could READ, and I could WRITE, but I could not FORMAT using 765.
Just set the parameters for 1024 byte and read or write the first 5
sectors. The FDC will ignore all sectors other than the ones that you
specify.
Then set the parameters for 512 bytes, and read or write sector
6. The FDC will ignore the others.
IIRC, I had some very limited success reading and writing
(NOT FORMATTING) mixed density, by doing a reset of the FDC
in between switching density.
--
Grumpy Ol' Fred cisin at xenosoft.com