HardLabs

RC6502 Apple 1 SBC

tebl·RC6502-Apple-1-Replica·RC6502 Apple 1 SBC/RC6502 Apple 1 SBC.kicad_pcb

RC6502 Apple 1 SBC PCB layout, top view — open source AVR/Arduino board by tebl
Simulate this board

About the RC6502 Apple 1 SBC PCB

RC6502 Apple 1 SBC is an open source AVR/Arduino PCB design by tebl, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 99.1 × 99.7 mm, with 48 components from 32 distinct parts.

Its main chip is the Arduino Nano, from the AVR/Arduino family. Other key parts include the 6502, HM62256BLP-7, 74HCT138, 28C256 and 74HCT00. By type, the board carries 12 capacitors, 11 connectors, 10 resistors, 9 ICs, 2 modules and 1 crystal.

It belongs with the retro computing designs in this gallery.

From the project

An expandable SBC-version of the Apple 1 computer, easy to get started with and lot of cool stuff that can be added to it!

Did you ever wonder what the first computer created by Apple was like, and then checked what getting one might cost? Well, only a few were made and those that still exist probably would cost you more than my car! Steve Wozniak built what would later be called the Apple I computer in his garage, using only common over the counter components the result was an interesting computer that still holds the imagination of many computer geeks to this day. I don't own a garage so I was limited by whatever I could do from the confines of my kitchen table, the RC6502 was what I came up with and with the…

RC6502 Apple 1 SBC, from the project README
From the project README

Main components on the RC6502 Apple 1 SBC

6502HM62256BLP-774HCT13828C25674HCT00NE55574HCT046821MCP23S17A13 SelectA14 Select

RC6502 Apple 1 SBC bill of materials (BOM)

48 components, 32 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
6502
U1
1
HM62256BLP-7
U2
1
74HCT138
U3
1
28C256
U4
1
74HCT00
U5
1
NE555
U6
1
74HCT04
U7
1
6821
U8
1
MCP23S17
U9
1
A13 Select
A13
1
A14 Select
A14
1
1MHz
X1
1
VP GND
J1
1
Arduino Nano
J2
1
Backplane
J3
4
Hole
J4, J5, J6, J7
1
Power
J8
1
ROM_EN
J9
1
RAM_EN
J10
1
PIA_EN
J11
Show 12 more
QtyPartRefs
1
OSC_EN
JP1
1
RESET
SW1
1
Power
D1
10
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +2
1
10uF
C10
1
10nF
C12
5
3.3k
R1, R6, R7, R8, R10
1
1M
R2
1
47k
R3
1
1k
R4
1
330
R5
1
10k
R9

RC6502 Apple 1 SBC design files

The KiCad project lives in the tebl/RC6502-Apple-1-Replica repository on GitHub; these links point at the commit this page was built from.

RC6502 Apple 1 SBC: common questions

What microcontroller does the RC6502 Apple 1 SBC use?

The RC6502 Apple 1 SBC is built around the Arduino Nano, from the AVR/Arduino family.

How big is the RC6502 Apple 1 SBC PCB?

The RC6502 Apple 1 SBC measures 99.1 × 99.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RC6502 Apple 1 SBC?

48 components, from 32 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the RC6502 Apple 1 SBC design files?

From the tebl/RC6502-Apple-1-Replica repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the RC6502 Apple 1 SBC design in my own project?

Yes, under the terms of its GPL-3.0 license, which tebl chose for the repository.

Can I test firmware for the RC6502 Apple 1 SBC without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

More boards in RC6502-Apple-1-Replica

Similar boards