Geoffrey Swales

UNITED KINGDOM • + Follow

Engineer

UNITED STATES OF AMERICA
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- 2
Geoffrey Swales

UNITED KINGDOM
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- 13
Engineer

NETHERLANDS, THE
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- 13
Steve

ITALY
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9

Tools, APP Software Used etc.

KiCAD

Kicad

Description

MINIMAL 6502 SINGLE BOARD COMPUTER: CRAB APPLE I

A simple 6502 based computer which is compatible with the Apple 1 computer from the 1970s.

It uses a PIC18F to act as a serial UART. This also enables a menu to adjust BAUD rate and CPU clock speed (1,2,4MHz).

The system has 32k of SRAM and uses an 8K EEPROM for the OS.

More information can be found on GITHUB.

Also, here's a short video of the serial configuration.

Enjoy!

Geoffrey.

Code

Crab Apple BIOS PIC18F HEX file

CRAB_APPLE_BIOS.X.production.hex

BIOS Sourse

SBC_BIOS.zip

Schematic and Layout

Crab Apple I Schematic

CRAB_APPLE_I.pdf

Download Gerbers Download BOM(Bill of materials)

Jan 17,2023

4,412 views

MINIMAL 6502 SINGLE BOARD COMPUTER: CRAB APPLE I

2 Layers PCB 69.8 x 74.3 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen

A VERY SIMPLE 6502 BASED SINGLE BOARD COMPUTER BASED ON THE APPLE I USES A PIC18F AS SERIAL CONNECTION TO PC TERMINAL.

4412

Published: Jan 17,2023

Standard PCB

Download Gerber file 41

BOM(Bill of materials)

PCBWay Donate 10% cost To Author

Only PCB

PCB+Assembly

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Project images are for reference only. Actual production is based on the manufacturing files on the project page. Please review the designer's notes (e.g., PCB thickness) and select the appropriate options. PCBWay is not responsible for issues caused by unsuitable parameter selections.
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