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Vic2020mainboard

danwerner21·vic2020·vic2020mainboard/Vic2020mainboard.kicad_pcb

Vic2020mainboard PCB layout, top view — open source board by danwerner21
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About the Vic2020mainboard PCB

Vic2020mainboard is an open source PCB design by danwerner21, published on GitHub. It is a 2-layer board measuring 357.8 × 124.5 mm, with 127 components from 61 distinct parts.

Other key parts include the 7402, 74LS138, LM555, 7406 and 74LS133. By type, the board carries 40 capacitors, 36 resistors, 24 ICs, 12 connectors, 9 inductors and 2 transistors.

It belongs with the retro computing and keyboards designs in this gallery.

From the project

A Vic-20 clone created with [almost] all readily available parts

1. The VIC-2020 Mainboard PCB Kicad design and Gerber files 2. The VIC-2020 Keyboard PCB Kicad design and Gerber files 3. OpenSCAD and STL files for a 3d printed case 4. Design Files for Max Keyboard Custom Printed Keycaps

* While the mainboard does have a S-VIDEO mod applied that should (in theory) provide S-VIDEO output, it does not work. If anyone corrects this, please feel free to reach out and I will correct the schematics -- but for now, I would not populate the S-VIDEO connector, and always short the Chroma Disconnect jumper. #### UPDATE Turns out the footprint for the SVIDEO…

Vic2020mainboard, from the project README
From the project README

Main components on the Vic2020mainboard

740274LS138LM555740674LS133W65C02SXP74LS0074LS0474LS02AS6C1008-55PCN2751274LS24527646560W65C22NXP74ALS32

Vic2020mainboard bill of materials (BOM)

127 components, 61 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
7402
U1
2
74LS138
U2, U6
1
LM555
U3
1
7406
U4
2
74LS133
U5, U10
1
W65C02SXP
W65C02SxP
U7
1
74LS00
U8
1
74LS04
U9
1
74LS02
U11
2
AS6C1008-55PCN
U12, U17
1
27512
U13
5
74LS245
U14, U15, U16, U18, U23
1
2764
U19
1
6560
U20
2
W65C22NXP
W65C22NxP
U21, U22
1
74ALS32
U24
1
2SC1959
2sc1959
Q1
1
2SC1815
Q2
1
Crystal
Y1
1
A15 KERNAL/BASIC SELECT
J1
Show 41 more
QtyPartRefs
1
A14 Kernel/Basic Select
J2
1
FONT SELECT
J3
1
Chroma Disconnect
J4
1
SVIDEO Out
J5
1
Audio Out
J6
1
Video Out
J7
1
Keyboard
J8
1
LED
J9
1
5v Regulated
J10
1
Conn_02x08_Odd_Even
J11
1
IEC Port
J13
1
1K
RV1
1
RAM ENABLE
SW1
1
Expansion Port
SW3
9
Ferrite_Bead_Small
FB1, FB2, FB3, FB4, FB5, FB6, FB7, FB8 +1
5
.1uf
C1, C6, C8, C10, C40
1
8-90pf
C2
1
2pf
C3
2
10uf
C4, C38
1
220pf
C5
24
.01uf
C7, C12, C13, C14, C15, C16, C17, C18 +16
1
2.2uF
C9
1
1uf
C11
2
.001uf
C35, C36
1
.47uF
C37
1
47uF
C39
1
220k
R1
3
330
R2, R4, R24
2
560
R3, R5
1
150K
R6
17
1K
R7, R11, R12, R13, R14, R18, R25, R26 +9
3
2.2K
R8, R9, R10
1
180
R15
1
240
R16
1
510
R17
1
1.8K
R19
1
2.7K
R20
1
470
R21
1
270
R22
1
10K
R23
1
75
R36

Vic2020mainboard design files

The KiCad project lives in the danwerner21/vic2020 repository on GitHub; these links point at the commit this page was built from.

Vic2020mainboard: common questions

How big is the Vic2020mainboard PCB?

The Vic2020mainboard measures 357.8 × 124.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Vic2020mainboard?

127 components, from 61 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 Vic2020mainboard design files?

From the danwerner21/vic2020 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Vic2020mainboard design in my own project?

The repository has no license, so all rights stay with danwerner21. Use it as a reference, and ask the author before reusing the design.

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