6 Dec
2010
6 Dec
'10
3:08 p.m.
On 12/06/2010 06:56 AM, Pontus Pihlgren wrote:
Sorry to hijack the thread, but I would like to
achieve the same for
ESDI disks. Primarily for my IRIS 3130.
/P
On Mon, Dec 06, 2010 at 11:42:39AM -0000, Rod Smallwood wrote:
> This is kind of he same topic. I have a reasonable number of SCSI drives but
> no ST506 (MFM drives). I know they used to fit ST506's with adapters to make
> them SCSI. I need to go the other way i.e. have an adaptor to make a SCSI
> look like a ST506. Any ideas folks? Or even make an IDE look like an ST506.
>
>
> Regards
>
> Rod Smallwood
>
>
That would be doing the hard way around. If anything MFM to CF, IDE or
SD
would be far more direct.
the problem is MFM is a disk level interface and you have to do revere MFM
to get the data and then interpret the byte stricns for sector numbers
and also look
at the step and direction for cylinder, the return side would require
data in MFM format
and other responses like TRK000. EDSI is really the same thing faster
with a bit more
control intelligence.
In the end to do that is a lot of complication where a MFM drive
directly would be easier
or to drop on the bus and grab all the control signals before they go to
the MFM controller.
The fact that I was grabbing ST5xx drive and ST2xx drives when they were
almost junk
for free has paid over time as I have a store of drives to avoid this
level of pain.
Allison