Tag: 8088

Period 5 MHz 8088 coprocessor card with optional fast memory and an 8087 socket.

This is a period product obtained used. The AD8088 has 2K of onboard RAM expandable to 8K; larger programs need the separate AD128K in a nearby slot, and the AD128K cannot operate by itself. The original package included FTL math acceleration and the MET event timer. CP/M-86 and MS-DOS support depended on separately supplied operating-system software. A system needs at least 48K, a Language Card or equivalent, a disk drive, and a display. An 8087 may require extra cooling or an empty adjacent slot.

Builds a compact modular IBM PC/XT-compatible computer with an 8088 or NEC V20, up to 640 KB of base RAM, optional upper memory, and 8-bit ISA expansion.

The GPL-3.0 project provides KiCad files, Gerbers, a bill of materials, BIOS, programmable-logic files, and build instructions. Retro Electronics had six bare ENIG PCBs in stock on 2026-07-27; every component and all assembly are excluded. Weird Electronics' board and complete-kit listings were temporarily unavailable while the seller takes a break through August 20, 2026. A separate assembled-board listing had been sold out since May 11, 2026. Weird Electronics sells a Version 1.4 PCB with larger Flash-ROM support, while the repository README documents layouts through Version 1.3; follow the documentation for the board actually supplied.

Open Trident TVGA9000i VGA card for 8-bit ISA computers, including the original IBM PC and XT.

Use PCB version 1.1 for an original IBM PC or XT; version 1.0 needs the documented ALE rework. On version 1.1, the C17 silkscreen incorrectly says 1 uF instead of 1 nF. The project also documents a color-monitor detection workaround for newer DDC displays.