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RC6502 RIOT

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

RC6502 RIOT PCB layout, top view — open source board by tebl
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About the RC6502 RIOT PCB

RC6502 RIOT is an open source PCB design by tebl, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 99.1 × 69.2 mm, with 26 components from 24 distinct parts.

Other key parts include the RIOT and 74HCT138. By type, the board carries 11 jumpers, 6 connectors, 4 capacitors, 2 ICs, 2 switches and 1 resistor.

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!

Since building and spending time with the excellent RC2014 computer kit, I wanted to build another one from scratch while learning even more about them along the way. Combine that with the love of old machines I'll never be able to own, and the missing knowledge to actually do that I instead started looking for books on how things work on a more basic level.

RC6502 RIOT, from the project README
From the project README

Main components on the RC6502 RIOT

RIOT74HCT138

RC6502 RIOT bill of materials (BOM)

26 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RIOT
U1
1
74HCT138
U2
1
LEFT PLAYER
J1
1
VDU_BASE
J2
1
Analog
J3
1
RIGHT PLAYER
J4
1
AUX
J5
1
RC6502_Backplane_Extra
J9
1
IRQ_EN
JP1
1
CS1_SEL
JP2
1
CS2_SEL
JP3
1
T1_EN
JP4
1
T0_EN
JP5
1
RAM_SEL
JP6
1
IRQ_SEL
JP7
1
B/W
JP8
1
L_DIFF
JP9
1
R_DIFF
JP10
1
RAM_EN
JP11
1
SELECT
SW1
Show 4 more
QtyPartRefs
1
START
SW2
2
100nF
C1, C2
2
1nF
C3, C4
1
3k3
R1

RC6502 RIOT 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 RIOT: common questions

How big is the RC6502 RIOT PCB?

The RC6502 RIOT measures 99.1 × 69.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RC6502 RIOT?

26 components, from 24 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 RIOT 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 RIOT design in my own project?

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

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