Possible to speed up I/O subsystem of 5150?

[Jim Leonard]

Patrick Finnegan wrote:
>>    There was one 8-bit ISA hard disk controller card for the IBM PC
>>or XT that would do a 1:1 interleave, from Patterson Labs.  Don't
>>know how they did it, but they worked.  They were always unusual,
>>probably impossible to find today, but Google it.
>>
>>    RLL was way too fast for the PC/XT bus at 1:1 interleave, but
>>there was at least one 8-bit controller from Seagate that worked with
>>only one 30 MB IDE drive.  I don't remember the numbers.  They would
>>work with a higher interleave, 3 or 4 sounds about right.
> 
> Why not just get a SCSI controller?  Surely you can get an AHA-1542 or 
> something to work on an 8-bit bus, and it'll probably have better 
> performance (and easier to find disks) than any IDE or MFM/RLL (ST-506) 
> controller for the era.

I believe the AHA-1542 (and B, C, and CF) were all 16-bit boards, whereas I'm 
trying to increase the I/O of an 8-bit IBM 5150...
-- 
Jim Leonard (trixter at oldskool.org)                    http://www.oldskool.org/
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