IDE <-> MFM, was > Re: AT&T 7300/3B1's

Gordon JC Pearce MM3YEQ gordonjcp at
Thu Nov 27 14:15:17 CST 2008

Curtis H. Wilbar Jr. wrote:
> Oliver Lehmann wrote:
>> Jules Richardson wrote:
>>> I believe there are only a couple of commercial solutions out there 
>>> (serious $$$), and it's a problem that the hobbyist movement hasn't 
>>> cracked (except on paper) yet.
>> The problem is, that you need serious computing power to do it the other
>> way round (And I'm looking for an "attaching IDE or SCSI disks to a ST506
>> controller" solution as well)
> While it wouldn't be universal... at least for certain platforms,
> wouldn't it be simpler to replace the MFM controller chip(s)
> with a circuit that simply accessed an IDE or SCSI disk instead ?

Well yeah.  You could probably emulate the MFM controller *entirely* 
with a modern microcontroller, and stick an SD card in.  There can't be 
*that* much involved in pretending to be a hard disk controller chip...


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