CompaqS3VirgeGXVRAM
About the CompaqS3VirgeGXVRAM PCB
CompaqS3VirgeGXVRAM is an open source PCB design by jeffqchen, published on GitHub under the CC-BY-SA-4.0 license. It is a 4-layer board measuring 70 × 70 mm, with 21 components from 5 distinct parts.
Other key parts include the SST39SF010-040. By type, the board carries 16 capacitors, 3 ICs and 2 connectors.
From the project
A VRAM Expansion Board for the Compaq S3 Virge GX & Matrox Mystique 220 Video Card
The Compaq S3 Virge GX video card comes with 2MB of VRAM onboard, and a dual pin header interface for an add-on board to upgrade up to 4MB VRAM in total.
However, this add-on board is difficult to find at a reasonable price nowadays. Hence the need for this project.
Also, I've added additional support for a BIOS chip with a modern pinout scheme, in contrast to the weird one Compaq decided to use on their card. Just in case you are facing a corrupted BIOS situation, you can easily remove the stock one and install your own.
Main components on the CompaqS3VirgeGXVRAM
CompaqS3VirgeGXVRAM bill of materials (BOM)
21 components, 5 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | ~ | PQFP-100_14x20mm_P0.65mm | U1, U2 |
| 1 | SST39SF010-040 | PLCC-32_THT-Socket | U3 |
| 1 | ~ | Top Pin Header | J1 |
| 1 | ~ | Bottom Pin Header | P1 |
| 16 | 0.1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8 +8 |
CompaqS3VirgeGXVRAM design files
The KiCad project lives in the jeffqchen/CompaqS3VirgeGXVRAM repository on GitHub; these links point at the commit this page was built from.
CompaqS3VirgeGXVRAM: common questions
How big is the CompaqS3VirgeGXVRAM PCB?
The CompaqS3VirgeGXVRAM measures 70 × 70 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the CompaqS3VirgeGXVRAM?
21 components, from 5 distinct parts. The full bill of materials is listed on this page.
Where can I download the CompaqS3VirgeGXVRAM design files?
From the jeffqchen/CompaqS3VirgeGXVRAM repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the CompaqS3VirgeGXVRAM design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which jeffqchen chose for the repository.