Another disk imaging project

[Jim Leonard]

Fred Cisin wrote:
>>>There are ISA adapters for PCMCIA.  There are adapters to plug CF into
>>>PCMCIA dlots.
>>
>>8-bit ISA adapters?
> 
> 
> YES.
> There are, or at least WERE, 8 bit ISA PCMCIA adapters.

Recall any?  I'm really looking for something like this.

>>To clarify:  I want to add "solid state" storage to a 1982
>>IBM PC rev B. machine (to see if I can get any faster I/O than the MFM drive
>>hooked up here)
> 
> That would certainly reduce the I/O bottleneck,
> but 4.77 MHz will never be "fast".

The speed of the CPU is irrelevant for my project; what I *do* need is a way to 
pump 200KB/s through the machine, and the WD 20MB MFM + controller is only 
giving me about 80KB-100KB.  (interleave 3:1, adjusting it in either direction 
reduces throughput)

What *is* the bus speed of a 4.77MHz 8088-based PC anyway?  ie. what is the 
theoretical maximum amount of data per second that can go through the bus?
-- 
Jim Leonard (trixter at oldskool.org)                    http://www.oldskool.org/
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