Hi all, can any of you identify this card? It has the following text printed on the PCB: ASY-002008-01 REV A0

It provides a DB-25 serial port on the I/O bracket. There is also support for a parallel port (J2) on an additional I/O bracket, but this is missing.

There is a 34-pin (2x17) header (J5) which may be a floppy drive connector.

There are two 26-pin (2x13) headers which are labelled DTE (J3) and DCE (J4). This may be something to do with telecommunications.

There is an 18-pin (2x9) header which has unknown function.

There is a 62-pin (2x31) header which has unknown function, but which appears to extend the ISA bus.

There is a 3V CR2025 button battery which is probably for a RTC.

The card provides 256 KiB RAM when all 36 (4 x 8+1 parity) memory banks are populated. It uses 4164-class 64 Kibit DIP-16 DRAM memory modules. The following memory chips are installed:

• NEC D4164C-3 (150 ns)
• Fujitsu MB8264A-10 (100 ns)
• National Semiconductor NMC3764N-15 (150 ns)