Up for sale is an authentic vintage ATI VGA Wonder+ 16-bit ISA graphics adapter (PCB Part Number 1090009510, Board Assembly 104A109510, Made in Canada). Powered by the genuine ATI 28800-2 graphics controller, an ATI 18820 bus interface IC, and a socketed Triad Semiconductor TR9C1710-66PCA RAMDAC, this iconic board is renowned for its versatile multi-monitor support across analog and legacy digital displays.

An essential period-correct display card for vintage IBM PC, XT, 286, 386, and 486 retro computing rigs and DOS gaming builds.

• Manufacturer: ATI Technologies Inc. (Made in Canada)

• Model: VGA Wonder+ (VGA Wonder Plus)

• Part Numbers: 1090009510 (PCB) / 104A109510 (Assembly)

• Bus Interface: 16-bit ISA (backwards-compatible with 8-bit ISA slots)

• Core Controller: ATI 28800-2

• Bus & Mouse Controller: ATI 18820

• RAMDAC: Triad Semiconductor TR9C1710-66PCA (DIP-28 socketed)

• BIOS ROM: Dual EPROM configuration (VGA WONDER+ V1M-1.03/70 EVEN & ODD)

• Installed Memory: 256 KB Fast Page Mode DRAM (2× TI TMS44C256-80N + 2× Micron MT 4C4256-8 80ns chips)

• Memory Expandability: Expandable to 512 KB via 4 open 20-pin DIP sockets (U1–U4)

• External Bracket Ports:

  • Standard 15-pin analog VGA (DE-15) for CRT/LCD monitors

  • 9-pin digital TTL (DE-9) port for digital CGA, EGA, and TTL monochrome displays

  • 8-pin Mini-DIN ATI InPort bus mouse connector

• Clean vintage hardware in very good cosmetic preservation with intact gold edge contacts, clean traces, and no capacitor leakage.

• Expansion sockets U1–U4 are clean and ready for an upgrade to 512 KB using standard 256K×4 DRAM ICs.

• Card only; software drivers, video cables, bus mouse, and original box are not included.