Working build

Three Voodoo2s and a K6-2

Three 12 MB Voodoo2 cards, one K6-2 tower, and a 3DMark99 run in SLI.

I tested three 12 MB Voodoo2 cards individually in the K6-2 tower, then paired the two Creative cards in SLI. The system initially failed to detect SLI. Reseating the cards restored detection, and I ran 3DMark99 again with both cards enabled.

Processor: AMD K6-2 350
Motherboard: ASUS P5A-B rev. 1.03
Graphics: Two Creative Voodoo2 cards and one A-Trend 2455P, 12 MB each
Operating system: Windows 98 SE

System screenshots

NSSI General Information on a CRT, listing an AMD K6-2 at 350 MHz, 128 MB of RAM, and MS-DOS 6.22. — NSSI system overview under MS-DOS 6.22.

NSSI Multimedia Details listing Diamond Sonic Impact s90 or similar, with port 220h, IRQ 5, and DMA 1. — DOS audio settings and the CD-ROM driver reported by NSSI.

NSSI Video Details identifying a Matrox Millennium G200 with 8 MB of memory on AGP 2×. — The Matrox card and its video BIOS details.

NSSI 3D Graphics Acceleration lists the Matrox MGA-G200 and a 3Dfx Voodoo2 as the external accelerator. — NSSI detects the Voodoo2 alongside the Matrox card.

3DMark99 results
Configuration	Score
Creative card 1	2,267
Creative card 2	2,282
A-Trend 2455P	2,306
Two Creative cards in SLI	2,732

Socket 7 benchmark table comparing seven CPUs across DOS Quake, GLQuake, Quake 2, and 3DMark. The last row is labeled AMD K6-2+ 350. — A separate Socket 7 comparison table with Quake and 3DMark results.

The Case of the Missing Scanlines

All three cards showed missing lines through the GBS-C, even with the GBS-C connected directly to a display. The picture on the CRT was clean. The cause is still open.

Project photos

Project photos to follow