4 layers152.8 × 58.4 mm
2 layers58.4 × 124.5 mm
Cartridge mercury2
miselin/c64fpgaFPGA daughterboards for the Commodore 64
- Size
- 58.4 × 124.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 9
- Nets
- 65
- Pads
- 121
- Tracks, vias
- 208, 65
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 23 Nov 2021
- Updated
- 27 Nov 2021
Overview
Cartridge mercury2 is an open-source printed circuit board by miselin, from the miselin/c64fpga repository on GitHub. It is a 2-layer board of 58.4 × 124.5 mm with 9 parts on 65 nets, routed with 208 tracks and 65 vias.
It is built around the CES-132-02-T-S. It belongs with the retro computing and games and fPGA and programmable logic boards of this library.
Main components
1README
README.mdFPGA Boards for Commodore 64
These boards connect to the User and Expansion ports of the Commmodore 64 and break the pins out onto the I/O in the Mercury FPGA development board.
This is pin-compatible with either the Mercury or the Mercury 2, the latter using a more modern Artix-7 FPGA than the Mercury's Spartan 3A.
Cartridge Board
This board requires two 4-channel I2C-safe bidirectional logic level shifters as the cartridge pinout has 44 pins, but the Mercury board only has 30 5V-tolerant GPIO pins. The level shifter ensures the 5V TTL signals from the Commodore 64 are shifted down to 3.3V for the FPGA direct I/O pins.
These can be found on Adafruit.
Parts
9| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | TestPoint | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | TP1, TP2, TP3, TP4, TP5 |
| 2 | CES-132-02-T-S | Samac:CES-132-XX-Y-S | J2, J3 |
| 1 | 215297-6 | Samac:2152976 | J1 |
| 1 | Conn_02x22_Top_Bottom | C64:C64-Cart | J4 |
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Questions
How big is the Cartridge mercury2 PCB?
It measures 58.4 × 124.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Cartridge mercury2 use?
9 parts, built around the CES-132-02-T-S. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Cartridge mercury2 KiCad files?
From the miselin/c64fpga repository on GitHub, at the commit this page was made from: the board is pcbs/cartridge_mercury2/cartridge_mercury2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Cartridge mercury2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask miselin before reusing the design.