Rhys Weatherley
AUSTRALIA • + Follow
Description
Stackable-6502-IoBoard
I/O board companion for the Stackable 6502 Computer, providing the following capabilities:
- RS232 serial using a 65C51 ACIA and a MAX232 line driver.
- SPI bus interface, connected to PORTA on the 65C22 VIA on the base board.
- SD card connector for interfacing to 5V Arduino-compatible SD card breakout boards.
- 8 analog inputs using the MCP3208 12-bit SPI ADC chip.
- "PWM" output, connected to the PB7 square wave output of the 65C22 VIA on the base board.
- 4 indicator LED's on PB0, PB1, PB2, and PB3.
The I/O board is 125mm x 82mm and is a 4-layer board. GND and 5V planes are on the two inner layers.
More information, schematics, parts lists, and assembly instructions are available on github:
Code
Stackable 6502 Computer I/O Board
https://github.com/rweather/stackable-6502-computer
Schematic and Layout
https://github.com/rweather/stackable-6502-computer/blob/main/schematics/IoBoard.pdf
Dec 02,2023
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Stackable-6502-IoBoard
4 Layers PCB 81.3 x 124.5 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen
I/O Board for the Stackable 6502 Computer
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Published: Dec 02,2023
Standard PCB
Download Gerber file 3
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