Hi Or,
>A friend of mine found an old card when sorting his stuff, and he
>The cable is made of 20 lines...
>The text part says: DRIVE 1 ^
>DRIVE 2 ^
>Each ^ simbols a small white triangle near each DRIVE # word.
The triangle denotes Pin 1 of the ribbon cable.
>1)SN74LS174N
6 D-type flip-flops
>2)SINGAPORE 8310A
>[L] TBP28L22N
No idea, but the part number is TBP28L22N, 8310 is the date code.
>3)SN74LS323N
Are you sure this isn't '373 ? I don't recognise a '323 part number.
>[L] TBP28L22N
See 2 back. :)
>5)74LS 132
4 2-input NAND gates.
>HD74LSO5P
6 inverters.
>(Logo is unknown: A circle, with another circle inside that is
>cutted of in its edges with 2 lines in the top and buttom.
>There's a bold dot inside the second circle. In the edges
>of the outer circle there are 4 spikes, like in a aiming
>mark of a weapon. the spikes are going out of the outer
>circle, not in though.)
Hmmm... I didn't really follow this, but my guess is Hitachi. :)
>[L]M74LS259P
8-bit latch.
>(Logo: looks like the mitsubichi car manufacter logo)
Probably is. :)
>8)NE556N
A tone decoder.
>Thats the description... anybody got an idea?
No idea... could be anything with that chip inventory. My (wild)
guess is a floppy disk interface or maybe tape drives.
Mike
Harrogate, Yorkshire, England.
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