IBM Personal Computer XT 5160 upgrades

Open hardware reproductions of the two interface cards used to connect an IBM PC or XT to a 5161 Expansion Unit.

For this system (exact model): The project explicitly supports an IBM XT host connected to a 5161 Expansion Unit. A passive replacement backplane must provide the 14.318 MHz signal described by the project, and the README recommends a cable around one meter long.

Current 8-bit ISA adapter that lets a CompactFlash card serve as an XT-IDE hard disk in an IBM PC or XT-class computer.

For this system (exact model): The product page identifies the adapter as an IBM XT hard-disk solution. It uses one 8-bit ISA slot and boots CompactFlash through the onboard XT-IDE Universal BIOS.

Period accelerator that upgrades a 4.77 MHz 8088 IBM PC or XT with an 8 MHz 80286 processor and 8K of cache.

For this system (exact model): The card was designed for the IBM XT as well as the PC. It connects through the 8088 socket, and the project documents a jumper setting when the main board is installed in XT expansion slot 8.

This is a period product obtained used. The documentation project cannot produce a working clone until the original PAL devices are reverse engineered.

Current multifunction 8-bit ISA card that adds emulated storage, memory, networking, and USB or SD-connected devices to PC/XT-class computers.

For this system (bus/interface): PicoMEM uses one of the IBM 5160's 8-bit ISA slots. Its emulated RAM can be slower than native memory, so the project recommends a conventional RAM card when full zero-wait-state expansion is the priority.