PLease ID CD-ROM unit

From: Max Eskin <maxeskin_at_hotmail.com>
Date: Mon May 11 19:59:36 1998

This card also has some RAM-like chips. IF one were to assume that
those are buffers, could one say that this is just a customized
parallel port card?
>> single female socket,37 pin. It is labelled CD-IFI3, and has an NEC
>> D8255AC-5 chip on it. It is a standard 8-bit ISA. Could someone tell
>
>It's not much help but I can tell you that an 8255 is a pretty dumb 24
>line parallel I/O chip. It has the interesting feature that any write
to
>the mode control register (even if it doesn't change it) sets all
output
>lines to logic 0. That can make life interesting...
>
>
>-tony
>
>

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Received on Mon May 11 1998 - 19:59:36 BST

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