Cache goblin
About the Cache goblin PCB
Cache goblin is an open source PCB design by Kelsidavis, published on GitHub. It is a 6-layer board measuring 114 × 48 mm, with 26 components from 9 distinct parts.
Other key parts include the TQFP-100_14x14mm_P0.5mm, SOJ-32 and TSOP-II-44_10.16x18.41mm_P0.8mm. By type, the board carries 10 ICs, 6 resistors, 4 diodes, 4 capacitors and 2 connectors.
From the project
Modern reverse-engineered drop-in L2 cache card for Power Macintosh 6400/6500 — replaces the unobtanium IDT7MP6071 with an ATF1508AS CPLD + IS61C1024AL SRAMs
This directory is a Quilter-ready version of the cache card — same schematic and netlist as kicad/, but the PCB is set up exactly the way Quilter expects:
- Single closed board outline on Edge.Cuts (114 × 38 mm with 35-25-20 keying notches). - All footprints loaded (custom slot connector and SOJ-32, plus stock KiCad parts for everything else — the footprint library is symlinked from ../kicad/footprints/cache6400.pretty/). - Netlist matches the schematic (both generated from the same docs/connectivity.yaml). - J1 (slot connector) pre-placed and LOCKED inside the outline at the bottom edge.…
Main components on the Cache goblin
Cache goblin bill of materials (BOM)
26 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TQFP-100_14x14mm_P0.5mm | TQFP-100_14x14mm_P0.5mm | U1 |
| 8 | SOJ-32 | SOJ-32_10.16x20.32mm_P1.27mm | U2, U3, U4, U5, U6, U7, U8, U9 |
| 1 | TSOP-II-44_10.16x18.41mm_P0.8mm | TSOP-II-44_10.16x18.41mm_P0.8mm | U10 |
| 1 | CACHE_SLOT_PM6400 | CACHE_SLOT_PM6400 | J1 |
| 1 | PinHeader_2x05_P1.27mm_Vertical | PinHeader_2x05_P1.27mm_Vertical | J2 |
| 4 | LED_0805_2012Metric | LED_0805_2012Metric | D1, D2, D3, D4 |
| 2 | C_0805_2012Metric | C_0805_2012Metric | C1, C2 |
| 2 | C_0603_1608Metric | C_0603_1608Metric | C3, C4 |
| 6 | R_0603_1608Metric | R_0603_1608Metric | R1, R2, R3, R4, R5, R6 |
Cache goblin design files
The KiCad project lives in the Kelsidavis/cache-goblin repository on GitHub; these links point at the commit this page was built from.
Cache goblin: common questions
How big is the Cache goblin PCB?
The Cache goblin measures 114 × 48 mm, has 6 copper layers and is 1.6 mm thick.
How many components are on the Cache goblin?
26 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the Cache goblin design files?
From the Kelsidavis/cache-goblin repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Cache goblin design in my own project?
The repository has no license, so all rights stay with Kelsidavis. Use it as a reference, and ask the author before reusing the design.