Vintage 8-Bit ISA PC/XT Multifunction Expansion Card

Offered here is a vintage full-length 8-bit ISA multifunction expansion card from the early IBM PC/XT-compatible era.

The board incorporates several functions commonly found on multifunction expansion cards of the mid-1980s, including memory expansion capability, serial communications circuitry, and a battery-backed real-time clock.

Visible components include:

Western Digital WD8250-PL UART

National Semiconductor MM58167AN real-time clock/calendar

Motorola MC1488P / MC1489P RS-232 interface ICs

DB-25 external connector

Large bank of DIP memory sockets

Configuration DIP switches and jumpers

8-bit ISA edge connector

Full-length vintage PCB and original metal mounting bracket

Please note: The memory sockets shown in the photographs are empty. RAM chips are not included.

The exact manufacturer and model number have not been positively identified, so the card is being represented according to the components and features visible on the board rather than attributing it to a specific manufacturer.

Please review all photographs carefully for the exact board,

components, connectors, configuration, and cosmetic condition you will receive.

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PC Scrappers LLC!

We specialize in recovering, preserving, and finding new homes for vintage and modern computer hardware that might otherwise be recycled.

All items are packaged carefully to help ensure they arrive safely.

Vintage electronic components should always be checked for compatibility with your specific system before installation.

PC Scrappers LLC — Recycling One Circuit Board at a Time.