PLease ID CD-ROM unit - test-drb@ccmp.vtda.org

13 May 1998

OK, the other chips are:
Hitachi HD74LS32P
			  367AP
			  240P
 			  164P
MB74LS00
	  138

TI J549X SN74LS541N

The card has a weird logo: A large S, progressively narrowing toward
the top.

Could someone tell me about the actual drive?
...
 They're probably TTL buffers/address decoding
logic. Can you post the 
numbers (which probably start 74LS) and we'll try to identify them and 
guess likely functions.

My guess is that this is some kind of custom parallel interface. Put  the 
...
 8255 into Mode 2 and you've got a bidirectional
data path on port A and 
control lines on the other 2 ports. That's the most likely setup 
(although it might be something totally different, like using one port 
for input and another for output). 

-tony

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