At 09:35 AM 10/22/03 -0700, you wrote:
>Hi
> It looks like a ROM card. I'd check the pinouts before
>plugging it into a PC. Many cards like these were for
>various proprietary busses and have the power leads in
>different locations.
> If it is for a PC, trace down the address leads from the
>edge connector. These will usually go to some kind of
>comparitor ( ls688 or similar ). You should be able to
>figure where to look for it in the address of the PC.
>You can then use some simple code to transfer the EPROM
>to a disk file.
No need to write code. Use Checkit and it will show the ROM address and
the first 15 or so bytes on data in it. Once you know the address, you can
use Debug to read it and display it or send it to a file.
> Still, doesn't look like a PC card so be careful about
>plugging it in until you've traced a few leads.
Definitely!
Joe
>Dwight
>
>
>>From: chris <cb_at_mythtech.net>
>>
>>I found a rather old looking card. It appears to be an 8 bit ISA card (or
>>at least has that size/style looking connector).
>>
>>The only writing on it is MPPi Ltd. There are no connectors on it, not
>>even a case dust plate for filling a blank slot (so they must have
>>planned on you leaving the slot cover in place when this was inserted, or
>>it isn't an ISA card).
>>
>>There are 4 chip sockets on it, with the 2nd of the 4 containing an EPROM
>>chip (M5L2764K). Remaining chips appear to be maybe support chips (SN74L
>>series chips).
>>
>>There is a small bank of 4 dip switches, and two clusters of jumper poles
>>(no jumpers installed, poles are labeled A thru G).
>>
>>
>>Anyone have any clue what this card is? I'm wondering if maybe it is an
>>early security dongle. Maybe this was done as an internal card rather
>>than an external parallel or serial block.
>>
>>A pic of the card is at <http://www.mythtech.net/card.jpg>
>>
>>-chris
>><http://www.mythtech.net>
>>
>>w + p = -?
>>
>>
>>
>
>
>
>
Received on Wed Oct 22 2003 - 13:28:24 BST
