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rock65

A homebrew breadboard computer based on the W65C02S microprocessor.

Summary of Components

Component Description Link Quantity

W65C02S

8-bit Microprocessor

W65C02S @ Mouser.ca

1

SST39SF020A

1 Mbit NOR Flash

SST39SF020A @ Mouser.ca

1

AS6C1008-55PCN

1 Mbit SRAM

AS6C1008-55PCN @ Mouser.ca

1

7805 Voltage Regulator

5V Voltage Regulator

Seli.tn

1

4MHz Quartz Oscillator

4 MHz Crystal Oscillator

Seli.tn

1

74HC00 NAND Gate

Quad 2-input NAND Gate

Seli.tn

1

PCF8574T I2C Module

I2C I/O Expander

Seli.tn

1

128x64 LCD Display

Monochrome LCD Display 128x64

Seli.tn

1

RTC DS3231

Real-Time Clock Module

Seli.tn

1

KY-012 Buzzer

Active Buzzer Module 3.5-5.5V

Seli.tn

1

USB-C Breakout Board

USB-C 5V Power Input Module

https://www.tindie.com/products/treedix/usb-type-c-breakout-board/

1

1N5819 Schottky Diode

Reverse Polarity Protection Diode

Seli.tn

2

Button

Reset button

Seli.tn

4

5mm Blue LED

Indicator LED

Seli.tn

2

10kΩ Resistor

Pull-up/Pull-down Resistor

Seli.tn

20

220Ω Resistor

Current Limiting Resistor for LED

Seli.tn

10

100nF Ceramic Cap

Decoupling Capacitor

Seli.tn

10

10µF Electrolytic Cap

Filtering Capacitor

Seli.tn

4

NPN Transistor (2N3904)

General Purpose Switching

Seli.tn

2

M/M Jumper Wires

Male-to-Male Jumper Wires

Seli.tn

40

M/F Jumper Wires

Male-to-Female Jumper Wires

Seli.tn

20

Breadboard (830pts)

Seli.tn

3

Note

This project is under development. Components and chips have not yet been purchased.

Manual

Refer to the Developer Manual for information, including the datasheet, development guidelines and additional tips. librock is the official SDK for the project.

Contributing

Follow the Contributing Guidelines before opening a pull request.

License

Use, modify and distribute freely under the terms of the zlib permissive license.

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A homebrew breadboard computer based on the W65C02S microprocessor.

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