Matra Alice Internal 8KB RAM Expansion
About the Matra Alice Internal 8KB RAM Expansion PCB
Matra Alice Internal 8KB RAM Expansion is an open source PCB design by BrettHallen, published on GitHub. It is a 2-layer board measuring 32.5 × 38.1 mm, with 4 components from 4 distinct parts.
Other key parts include the 6264. By type, the board carries 1 IC, 1 connector and 1 resistor.
From the project
Projects for Matra Alice & Tandy TRS-80 MC-10
Note that the additional 4KB is not usable with the 16KB RAM expansion as the expansion occupies the same space in memory.
I have tested Rev. A on my Alice but not yet (as of 27-Feb-2025) on my MC-10.
Of course, software needs to be written to take advantage of this.
The Alice also doesn't have the bodge wiring for the 4KB address decoding that the MC-10 has.
This is what the 8KB daughterboard looks like installed in the Alice:
Main components on the Matra Alice Internal 8KB RAM Expansion
Matra Alice Internal 8KB RAM Expansion bill of materials (BOM)
4 components, 4 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 6264 | DIP1524W51P254L3632H394Q28N | U1 |
| 1 | 671-0801 Conn_01x03 | PinHeader_1x03_P2.54mm_Horizontal | J1 |
| 1 | D4016 | DIP-24_W15.24mm-Notch | Z10 |
| 1 | 1KΩ | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
Matra Alice Internal 8KB RAM Expansion design files
The KiCad project lives in the BrettHallen/Alice_MC10 repository on GitHub; these links point at the commit this page was built from.
Matra Alice Internal 8KB RAM Expansion: common questions
How big is the Matra Alice Internal 8KB RAM Expansion PCB?
The Matra Alice Internal 8KB RAM Expansion measures 32.5 × 38.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Matra Alice Internal 8KB RAM Expansion?
4 components, from 4 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 Matra Alice Internal 8KB RAM Expansion design files?
From the BrettHallen/Alice_MC10 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 Matra Alice Internal 8KB RAM Expansion design in my own project?
The repository has no license, so all rights stay with BrettHallen. Use it as a reference, and ask the author before reusing the design.
