/pub/cbm/schematics/computers/vic20/

The VIC-20 and the VIC-20CR

Subdirectories

cartridges@
Commodore VIC-20 cartridges
drives@
Disk drives
firmware@
System firmware

Files

251027l1.gif 1996-05-08 130771
VIC-20CR rev.D (NTSC, new design). Assy number 251027-01.
251027l2.gif 1996-05-08 173902
VIC-20CR rev.D (NTSC, new design). Assy number 251027-01.
251027l3.gif 1996-05-08 103747
VIC-20CR rev.D (NTSC, new design). Assy number 251027-01.
251027r1.gif 1996-05-08 146612
VIC-20CR rev.D (NTSC, new design). Assy number 251027-01.
251027r2.gif 1996-05-08 165161
VIC-20CR rev.D (NTSC, new design). Assy number 251027-01.
251027r3.gif 1996-05-08 136724
VIC-20CR rev.D (NTSC, new design). Assy number 251027-01. The PAL model has a crystal frequency of 4433618 Hz, and there is an extra 56pF capacitor on the solder side of the board, soldered parallel to R5.
324001-02a.gif 2016-07-20 436819
VIC-20cr NTSC. Assy number 324001-02. Scanned by Francois Leveille.
324001-02b.gif 2016-07-20 460411
VIC-20cr NTSC. Assy number 324001-02. Scanned by Francois Leveille.
324001-02c.gif 2016-07-20 431570
VIC-20cr NTSC. Assy number 324001-02. Scanned by Francois Leveille.
324001_1.gif 1996-05-08 177837
VC-20 rev.B (PAL, old design). Assy number 324001-03. Bad scanning quality.
324001_2.gif 1996-05-08 194380
VC-20 rev.B (PAL, old design). Assy number 324001-03. Bad scanning quality.
324001_3.gif 1996-05-08 170958
VC-20 rev.B (PAL, old design). Assy number 324001-03. Bad scanning quality.
VIC-20_The_Friendly_Computer_Technical_Manual_(PN_990440).pdf 2015-06-24 1717192
Tech manual with schematics
parts.txt 2015-07-08 810
Parts list for VIC-20 computer, from William Levak
vic20-left.tiff 1995-04-23 244980
 
vic20-middle.tiff 1995-04-23 252038
 
vic20-right.tiff 1995-04-23 168022
This diagram is scanned from the Commodore VIC-20 Programmer's Reference guide. It describes an early NTSC motherboard and most probably contains some errors, like the Commodore 64 schematic from the Commodore 64 PRG does.
vic20bus.gif 1996-05-08 37570
A block diagram of the VIC-20 bus signals.
vic20mod.gif 1996-05-08 111269
The VIC-20 RF modulator (PAL).

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