Commodore VIC-20 Simple BLK0 RAM Expansion
About the Commodore VIC-20 Simple BLK0 RAM Expansion PCB
Commodore VIC-20 Simple BLK0 RAM Expansion is an open source PCB design by BrettHallen, published on GitHub. It is a 2-layer board measuring 37.5 × 55.9 mm, with 7 components from 6 distinct parts.
Other key parts include the 6264 SRAM and 74HCT04. By type, the board carries 3 connectors, 2 ICs and 2 capacitors.
It belongs with the retro computing designs in this gallery.
From the project
Hardware & information for the VIC-20
The first step is to create this breakout board to isolate the A/V signals from the video output stage on the VIC's motherboard.
I hope that it will allow me to see what signals the 6560 outputs natively, then start to build on that.
BTW, yes I know there are boards out there that already do this. I've not had much luck with the free or paid-for boards, so I want to ... TRY TO ... understand it myself. Let's see ...
Main components on the Commodore VIC-20 Simple BLK0 RAM Expansion
Commodore VIC-20 Simple BLK0 RAM Expansion bill of materials (BOM)
7 components, 6 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 6264 SRAM | DIP-28_W15.24mm | U1 |
| 1 | 74HCT04 | DIP-14_W7.62mm | U2 |
| 1 | RAM Decoder | PinHeader_2x08_P2.54mm_Vertical | J1 |
| 1 | UD4 | DIP-18_W7.62mm | J2 |
| 1 | UE4 | DIP-18_W7.62mm | J3 |
| 2 | 100NF 100nF | C_Disc_D3.0mm_W2.0mm_P2.50mm | C1, C2 |
Commodore VIC-20 Simple BLK0 RAM Expansion design files
The KiCad project lives in the BrettHallen/Commodore_VIC20 repository on GitHub; these links point at the commit this page was built from.
Commodore VIC-20 Simple BLK0 RAM Expansion: common questions
How big is the Commodore VIC-20 Simple BLK0 RAM Expansion PCB?
The Commodore VIC-20 Simple BLK0 RAM Expansion measures 37.5 × 55.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Commodore VIC-20 Simple BLK0 RAM Expansion?
7 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 Commodore VIC-20 Simple BLK0 RAM Expansion design files?
From the BrettHallen/Commodore_VIC20 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 Commodore VIC-20 Simple BLK0 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.
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