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IBM PS2 XGA Display Adapter A Technical Reference (September 1990)

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Revision as of 21:30, 30 September 2026 by Josh (talk | contribs) (Correct slot-budget claim: Model 70/80 Oct 1990 TechRefs allow 2.0 A on a 32-bit connector (1.6 A on 16-bit), so the 1 MB card is only over the 16-bit limit; add P/N 15F2219, memory, multi-adapter and 8514/A notes)
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The IBM Personal System/2 XGA Display Adapter/A Technical Reference, First Edition (September 1990), part number 15F2219, form number S15F-2219-0, is IBM's short hardware reference for the XGA Display Adapter/A, a Micro Channel display adapter for systems with an 80386, 80386SX or 80486 processor. The PDF has 19 pages. It covers only what is specific to this card; IBM refers the reader to the video subsystem section of the Hardware Interface Technical Reference for the hardware interface and modes, and to the XGA Adapter Interface Technical Reference for the software interface.

Contents

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Page numbers are the book's own.

Subject Page
Introduction, multiple adapters, 8514/A compatibility, device drivers 1-2
Specifications: power requirements; board drawings of the 512 KB and 1 MB versions 3-4
Extension slots 5
Default VGA 6
Display support and display connector signals 7-8

Related publications listed in the preface: the XGA Display Adapter/A Hardware Maintenance Reference Supplement and Hardware Maintenance Service Supplement, the adapter and device driver installation instructions, the XGA Adapter Interface Technical Reference and the Hardware Interface Technical Reference.

Figures a repairer can use

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  • Power (Figure 1, p. 3): the 512 KB card draws 1.6 A (8.0 W) at +5.0 V and the 1 MB card 1.9 A (9.5 W). The Model 70 and Model 80 technical references (October 1990, channel load current figures) allow 1.6 A at +5 V on a 16-bit channel connector and 2.0 A on a 32-bit connector, so the 1 MB card is within the 32-bit limit and above the 16-bit one.
  • Memory and resolution (p. 1): 512 KB of VRAM, upgradable to 1 MB with the Video Memory Expansion Option; 1024 × 768 with 256 colours needs 1 MB.
  • Slots (pp. 1, 5): a 32/16-bit adapter with a Base Video Extension connector. It fits any 16-bit or 32-bit Micro Channel slot except the Auxiliary Video extension slot, and supplies VGA data to the Auxiliary Video Extension connector only when it sits in the Base Video extension slot.
  • Multiple adapters (p. 2): up to six per system (five where the system board has XGA); only one may run in VGA mode.
  • 8514/A (p. 2): not register-compatible; DOS programs written to the 8514/A Adapter Interface run through the supplied DOS Adapter Interface.

What this manual does not contain

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There is no schematic, parts list, component value, FRU number or removal procedure. The service material is in the two maintenance supplements named in the preface. The later XGA-2 supplement covers the XGA-2 card.

Download: IBM PS2 XGA Display Adapter A Technical Reference Sep90.pdf

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