RC6502 General Video Adapter

tebl·RC6502-Apple-1-Replica·Abandoned/RC6502 General Video Adapter/RC6502 General Video Adapter.kicad_pcb

RC6502 General Video Adapter PCB layout, top view — open source board by tebl

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About the RC6502 General Video Adapter PCB

RC6502 General Video Adapter 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 × 99.7 mm, with 80 components from 27 distinct parts.

Other key parts include the 4040_vcc, 74HCT04, 74HCT08, 74HCT86 and 74HCT165. By type, the board carries 21 capacitors, 20 resistors, 16 ICs, 16 diodes, 3 connectors and 1 transistor.

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 General Video Adapter, from the project README — From the project README

Main components on the RC6502 General Video Adapter

4040_vcc 74HCT04 74HCT08 74HCT86 74HCT165 CY7C199 74HCT373 74HCT32 74HCT00

RC6502 General Video Adapter bill of materials (BOM)

80 components, 27 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
2	4040_vcc	DIP-16_W7.62mm_Socket	U1, U2
3	74HCT04	DIP-14_W7.62mm_Socket	U3, U7, U17
2	74HCT08	DIP-14_W7.62mm_Socket	U4, U5
2	74HCT86	DIP-14_W7.62mm_Socket	U6, U14
1	74HCT165	DIP-16_W7.62mm_Socket	U9
1	CY7C199	DIP-28_W7.62mm_Socket	U10
3	74HCT373	DIP-20_W7.62mm_Socket	U11, U12, U13
1	74HCT32	DIP-14_W7.62mm_Socket	U15
1	74HCT00	DIP-14_W7.62mm_Socket	U16
1	BC547	TO-92_Molded_Narrow	Q1
1	8 Mhz	Crystal_HC49-4H_Vertical	Y1
1	General Video Connector	IDC_Header_Straight_40pins	J1
1	Video	rca_yellow	J2
1	CONN_01X39	Pin_Header_Angled_1x39_Pitch2.54mm	J3
1	5k	Potentiometer_Trimmer_Bourns_3296W	RV1
1	10k	Potentiometer_Trimmer_Bourns_3296W	RV2
15	BAT42	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8 +7
1	1N4848	D_DO-35_SOD27_P7.62mm_Horizontal	D16
17	100nF	C_Disc_D4.7mm_W2.5mm_P5.00mm	C1, C2, C3, C4, C5, C6, C7, C8 +9
2	470pF	C_Disc_D4.7mm_W2.5mm_P5.00mm	C20, C27

Show 7 more

Qty	Part	Footprint	Refs
2	22pF	C_Disc_D4.7mm_W2.5mm_P5.00mm	C25, C26
1	47k	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1
1	680	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R2
15	1k	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R3, R4, R5, R6, R7, R8, R9, R10 +7
1	1k8	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R18
1	2k2	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R19
1	75	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R20

RC6502 General Video Adapter 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 General Video Adapter: common questions

How big is the RC6502 General Video Adapter PCB?

The RC6502 General Video Adapter measures 99.1 × 99.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RC6502 General Video Adapter?

80 components, from 27 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 General Video Adapter 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 General Video Adapter 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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