TR4org-ROM
About the TR4org-ROM PCB
TR4org-ROM is an open source PCB design by nanamitm, published on GitHub. It is a 2-layer board measuring 97.8 × 81.3 mm, with 196 components from 6 distinct parts.
By type, the board carries 156 diodes, 36 resistors and 4 capacitors.
From the project
Standalone KiCad 10 project for the external ROM board used with the TR4org TD4 4-bit CPU reproduction. The schematic implements a jumper-programmed 16 x 8 diode-matrix ROM.
Standalone KiCad 10 project for the external ROM board used with the TR4org TD4 4-bit CPU reproduction. The schematic implements a jumper-programmed 16 x 8 diode-matrix ROM.
The circuit is reproduced from the original TD4 design by M. Yamamoto (xyama.sakura.ne.jp). See the schematic title block for the source attribution.
TR4org-ROM-backups/, .kicadprl, and manufacturing/jlcpcb/project.db` are local KiCad/tool state and are not intended for version control.
TR4org-ROM bill of materials (BOM)
196 components, 6 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 128 | 1N4148WS Jiangsu Changjing Electronics | D_SOD-323 | D1, D2, D3, D4, D5, D6, D7, D8 +120 |
| 20 | XL-1608UYC-06 Yellow XINGLIGHT | LED_0603_1608Metric | D65, D66, D67, D68, D69, D70, D71, D72 +12 |
| 8 | XL-1608UGC-04 Green XINGLIGHT | LED_0603_1608Metric | D145, D146, D147, D148, D149, D150, D151, D152 |
| 4 | CC0603KRX7R9BB104 100n YAGEO | C_0603_1608Metric | C1, C2, C3, C4 |
| 28 | 1k | R_0603_1608Metric | R1, R2, R3, R4, R5, R6, R7, R8 +20 |
| 8 | 10K 10k | R_0603_1608Metric | R17, R18, R19, R20, R21, R22, R23, R24 |
TR4org-ROM design files
The KiCad project lives in the nanamitm/TR4org-ROM repository on GitHub; these links point at the commit this page was built from.
TR4org-ROM: common questions
How big is the TR4org-ROM PCB?
The TR4org-ROM measures 97.8 × 81.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the TR4org-ROM?
196 components, from 6 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the TR4org-ROM design files?
From the nanamitm/TR4org-ROM repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the TR4org-ROM design in my own project?
The repository has no license, so all rights stay with nanamitm. Use it as a reference, and ask the author before reusing the design.