HardLabs

Cpu

atarola·compy6502·kicad/cpu/cpu.kicad_pcb

Cpu PCB layout, top view — open source board by atarola

About the Cpu PCB

Cpu is an open source PCB design by atarola, published on GitHub. It is a 2-layer board measuring 102.5 × 30 mm, with 10 components from 6 distinct parts.

Other key parts include the W65C02SxP. By type, the board carries 5 resistors, 2 connectors, 2 capacitors and 1 IC.

It belongs with the retro computing designs in this gallery.

From the project

Code for my 6502 build

compy6502 is an early-stage 6502 homebrew computer project. The long-term goal is to build enough hardware and firmware to run Tetris on the machine.

The design follows the spirit of Ben Eater-style breadboard/modular 6502 systems for simplicity and debuggability, but uses a different memory map based on the MMU/address-decoder architecture in docs/mmu.png.

The repo currently includes KiCad hardware designs, early ROM bring-up firmware, build/write scripts, emulator test scaffolding, and architecture reference images in docs/.

Main components on the Cpu

W65C02SxP

Cpu bill of materials (BOM)

10 components, 6 distinct parts.

QtyPartRefs
1
W65C02SxP
U1
1
Board Connector
J1
1
Conn_02x04_Counter_Clockwise
J8
1
0.1u
C1
1
10u
C3
5
3.3k
R1, R2, R3, R4, R5

Cpu design files

The KiCad project lives in the atarola/compy6502 repository on GitHub; these links point at the commit this page was built from.

Cpu: common questions

How big is the Cpu PCB?

The Cpu measures 102.5 × 30 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cpu?

10 components, from 6 distinct parts. The full bill of materials is listed on this page.

Where can I download the Cpu design files?

From the atarola/compy6502 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Cpu design in my own project?

The repository has no license, so all rights stay with atarola. Use it as a reference, and ask the author before reusing the design.

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