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Help needed identifying 8-bit ISA CARD ASM-SOLC Adapter 6137397XM

jens.hafner

Member
Joined
May 29, 2020
Messages
14
Dear all,

I just got an IBM PC/AT 5170 with one strange 8-bit ISA card in it. The card has a 25-pin male D-Sub connector on the slot cover, which just looks like the RS-232 port on the IBM Asynchronous Communications Adapter. The print on the PCB says: Card ASM-SOLC Adapter. Another stamp says: 6137397XM. In Checkit 3.0 the card is not recognizes as a serial adapter. What else could it be?

Best Regards

Jens

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It's literally what it says it is. It is a SDLC adapter (Synchronous Data Link Control). It's a synchronous serial (RS-232) card likely used for connecting to an IBM SNA network.
 
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