TRS80IUS
About the TRS80IUS PCB
TRS80IUS is an open source PCB design by Board-Folk, published on GitHub. It is a 2-layer board measuring 20.5 × 28.3 mm, with 5 components from 4 distinct parts.
By type, the board carries 2 connectors and 1 capacitor.
From the project
TRS-80 Model I 1700069G (Public)
This avoids the need to piggy back two 2102 video RAM chips, allowing for their installation side by side over a single socket with connections to the board on 'bit6' and 'd6', found as headers on our replica board. Could be used on an original board if you locate the right pins.
Just needs 2 of 8 pin round pin headers, two DIP16 sockets (unless you're feeling brave), a 5mm decoupling capacitor e.g. 100nF and two wire connections to bit6 (pin 1) and d6 (pin 2).
TRS80IUS bill of materials (BOM)
5 components, 4 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PLUG | VRAMPLUG | J1 |
| 1 | DATA | PinHeader_1x02_P2.54mm_Vertical | J2 |
| 2 | 2102 RAM | DIP-16_W7.62mm | Z1, Z2 |
| 1 | 100nF | Ceramic Disc 6.35mm | C1 |
TRS80IUS design files
The KiCad project lives in the Board-Folk/TRS80IUS repository on GitHub; these links point at the commit this page was built from.
TRS80IUS: common questions
How big is the TRS80IUS PCB?
The TRS80IUS measures 20.5 × 28.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the TRS80IUS?
5 components, from 4 distinct parts. The full bill of materials is listed on this page.
Where can I download the TRS80IUS design files?
From the Board-Folk/TRS80IUS repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the TRS80IUS design in my own project?
The repository has no license, so all rights stay with Board-Folk. Use it as a reference, and ask the author before reusing the design.