HardLabs

ACIA

atarola·compy6502·kicad/ACIA/ACIA.kicad_pcb

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

About the ACIA PCB

ACIA 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 8 distinct parts.

Other key parts include the W65C51NxP and 7400. By type, the board carries 3 connectors, 2 ICs, 2 capacitors, 2 resistors and 1 crystal.

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 ACIA

W65C51NxP7400

ACIA bill of materials (BOM)

10 components, 8 distinct parts.

QtyPartRefs
1
W65C51NxP
U1
1
7400
U2
1
1.8432 mhz
Y1
1
Board Connector
J1
1
CP2014 Friend
J2
1
IO Selector
J4
2
0.1u
C1, C2
2
1k
R1, R2

ACIA design files

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

ACIA: common questions

How big is the ACIA PCB?

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

How many components are on the ACIA?

10 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the ACIA 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 ACIA 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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