Files under /pub/cbm/schematics The HTML version is in /pub/cbm/schematics/ALLFILES.html * Here are schematic diagrams of different Commodore devices. You may also want * to visit (USA) or * (Germany) who sell service manuals and * schematic diagrams for various devices. ALLFILES - Index of all files under the /pub/cbm/schematics tree, text version. ALLFILES.html - Index of all files under the /pub/cbm/schematics tree, HTML version. cartridges/ * Cartridges for various computers cartridges/c64/ * External cartridges for the Commodore 64 cie.gif - Reverse engineered schematic diagram of an IEEE-488 cartridge, drawn by - William Levak. See also ../vic20/vie.gif. cartridges/c64/cpm/ * The Commodore 64 CP/M cartridge has a Z80 processor running at 1 MHz. * The schematic diagram of the cartridge was reverse-engineered by Ruud * Baltissen. There is also some documentation on this cartridge in early * prints of the Commodore 64 Programmer's Reference Guide. In later * prints, the pages that originally described the CP/M cartridge were * left blank. README - Ruud Baltissen's technical overview of the CP/M cartridge and some - comments. schematics-big.gif - Big version of the schematic diagram, 2271x1545 pixels. schematics-small.gif - Small version of the schematic diagram, 1136x773 pixels. schematics.hdf schematics.sch - UltiCap files of the cartridge, drawn by Ruud Baltissen. z80.gif - Another reverse engineered schematic diagram of the Z80 cartridge. - Drawn by Jerzy Sobola, January 26, 1999. Downloaded from - . cartridges/c64/cpm/demodisks@ -> ../demodisks/c64/cpm cartridges/c64/demodisks@ -> ../demodisks/c64 cartridges/c64/diag/ blackbox.bin - Firmware for the Blackbox cartridge. blackbox.gif - Reverse engineered schematic diagram of Blackbox, a Polish cartridge - that seems to contain some hardware diagnostics. Drawn by Jerzy Sobola, - July 2, 1999. Downloaded from - . diag-c64-4k.bin - Firmware for a 4-kilobyte diagnostic cartridge. Downloaded from - . diag-c64-4k.gif - Reverse engineered schematic diagram of a 4-kilobyte diagnostic - cartridge and its test harnesses. Drawn by Jerzy Sobola, July 23, - 1999. Downloaded from - . diag-c64-8k.bin - Firmware for a 8-kilobyte diagnostic cartridge. Downloaded from - . Independently - provided by Raymond Carlsen. diag-c64-8k.gif - Reverse engineered schematic diagram of a 8-kilobyte diagnostic - cartridge and its test harnesses. Drawn by Jerzy Sobola, March 12, - 1999. Downloaded from - . diag-c64-8k.txt - Raymond Carlsen's notes on the 8-kilobyte diagnostic cartridge. cartridges/c64/freezer/ * Freezer cartridges allow the running program to be stopped, so that * memory images can be backed up, modified or restored. MK.gif MK7PLA.txt - Schematic diagram of an Action Replay freezer cartridge clone, and the - contents of the PLA chip required for the cartridge. action73.bin - Firmware for "Action Plus v. 7.3". The texts are in German. action73.gif - Reverse engineered schematic diagram of "Action Plus v. 7.3". This - looks like an Action Replay freezer cartridge by Datel. Drawn by Jerzy - Sobola, July 2, 1999. Downloaded from - . fc1.gif - Schematic diagram of the Final Cartridge I. fc3.gif - Schematic diagram of the Final Cartridge III. cartridges/c64/ieee-488/ * Commodore's IEEE-488 cartridge for the Commodore 64. Reverse- * engineered by Wolfgang Günther . README - Description of the interface, including hints to design errors of the - original interface eprom.bin - The firmware (4 kB, raw binary) schematics.ps - Schematic diagram of the interface in PostScript format schematics.tif - Schematic diagram of the interface in TIFF format cartridges/c64/magic-voice/ * The Commodore Magic Voice cartridge is a speech synthesizer with a very * limited vocabulary of English. For more information about the * cartridge, see * . 251476.bin - Firmware of the Commodore Magic Voice cartridge, read from an EPROM. - The high part of the ROM is mapped into $E000-$FFFF, the low part into - $A000-$BFFF. schematic.pdf - Schematic diagram of the Commodore Magic Voice cartridge. Drawn by - Joachim Nemetz . cartridges/c64/sfx/ * The Commodore SFX Sound Expander was designed by Richard Watts of Music * Sales Ltd and sold by Commodore as part of the 'Commodore SFX' product * line. The cartridge uses an FM synthesis chip, the YM3256 OPL, which * is similar to the YM3812 OPL2 chip used in the AdLib and SoundBlaster * cards for IBM PC compatibles. analogue.jpg - Analogue part of the Sound Expander, reverse-engineered and hand-drawn - by Richard Atkinson. digital.jpg - Digital interface of the Sound Expander, reverse-engineered and hand- - drawn by Richard Atkinson. sfx-sch.gif - Schematic for the Commodore C64/C128 Sounder Expander cartridge. Both - analogue and digital parts; reverse-engineered. cartridges/c64/sfx/demodisks@ -> ../demodisks/c64/sfx cartridges/c64/userport@ -> cartridges/userport cartridges/pet/ * Commodore PET add-ons ada1800.gif - Reverse engineered schematic diagram of the ADA 1800 PET printer - interface. The interface is connected to the IEEE-488 port, and some - discrete logic converts the signals to Centronics. Drawn by Jerzy Sobola, - July 22, 1999. Downloaded from - . modempet.gif - Reverse engineered schematic diagram of a 300 baud modem for the PET user - port, Mark VII Auto 232. Drawn by Jerzy Sobola, February 11, 1999. - Downloaded from . petsound.gif - Reverse engineered schematic diagram of a PET sound interface KL-4M that - connects to the user port and to the cassette port. It seems to have a - 8-bit D/A converter and a speaker. Drawn by Jerzy Sobola, January 1, - 1999. Downloaded from - . cartridges/plus4/ * Cartridges for the Commodore 264 series (C16, C116 and plus/4) speedy.bin - Firmware for the Speedy freezer cartridge. speedy.gif - Reverse engineered schematic diagram of a Speedy freezer cartridge. Drawn - by Jerzy Sobola, January 23, 1999. Downloaded from - . cartridges/userport/ * Cartridges for the user port (Commodore 64 and VIC-20) 1011005.gif - VIC-1011 RS-232C adapter rev.A, assy number 1011005. eprburn.gif - Reverse engineered schematic diagram of an EPROM burner for the C64/C128. - Drawn by Jerzy Sobola, January 23, 1999. Downloaded from - . cartridges/userport/modem/ * Commodore telephone modems (VICMODEM, 1650, 1660, 1670 et al) are * plugged into the user port. chips.txt - List of integrated circuits in the Commodore modems. Composed by - William Levak. switches.txt - DIP switch settings in various Commdore modem models. Composed by - William Levak. cartridges/vic20/ * Cartridges for the VIC-20 vic20cvc.bin - Firmware of the Color Video Controller cartridge. Downloaded from - . vic20cvc.gif - Reverse engineered schematic diagram of a Color Video Controller device - (scrolling text interface) that plugs to the cartridge port and to the - user port. Drawn by Jerzy Sobola, January 26, 2001. Downloaded from - . vie.gif - Reverse engineered schematic diagram of an IEEE-488 cartridge, drawn by - William Levak. See also ../c64/cie.gif. cartridges/vic20/ieee-488/ * CBM IEEE-488 cartridge VIC-1112, reverse-engineered by Wolfgang * Günther 1110010.png - Schematic diagram, IEEE-488 interface board, K. Takagi, 2/5/81, CBM - Osaka, Japan, 1110010 rev. A, used on VC-1112. 325329-04.bin - Firmware for the cartridge (325329-03 has the same contents) README - Description of the interface and of the schematic diagrams schematics.ps - Schematic diagram of the interface in PostScript format. Reverse - engineered by Wolfgang Günther. schematics.tif - Conversion of the file schematics.ps in TIFF format. cartridges/vic20/userport@ -> cartridges/userport computers/ * Here are schematic diagrams of different Commodore computers. computers/b/ * The Commodore Model B service manual and schematic diagrams 314010-06-i.gif - Service manual, B model computer (Jan. 1985, PN-314010-06), title page 314010-06-ii.gif - Service manual, B model computer, table of contents 314010-06-p1.gif - Page 1: block diagram 314010-06-p2.gif - Page 2: B model parts list 314010-06-p3-left.gif 314010-06-p3-right.gif - Page 3: 8256048 board layout 314010-06-p4.gif - Page 4: 8256048 PCB parts 314010-06-p5.gif - Page 5: 8256048 PCB parts, continued 314010-06-p6-left.gif 314010-06-p6-right.gif - Page 6: keyboard matrix 4256004-01-left.gif 4256004-01-parts.gif 4256004-01-right.gif - Switching power supply 4256041-01of15.gif - Commodore 500 µP, address & data buffers, arbitration logic 4256041-02of15.gif - system decode & buffer control 4256041-03of15.gif - VIC; video memory; video bus buffers 4256041-04of15.gif - SID; 192k DRAM array refresh logic 4256041-05of15.gif - 192k DRAM address mux & control 4256041-06of15.gif - 192k*8 DRAM array [64k standard, 128k optional] 4256041-07of15.gif - 64k DRAM array and address mux 4256041-08of15.gif - system ROM/RAM array 4256041-09of15.gif - gameport interface; keyboard interface; RS232C interface 4256041-10of15.gif - interrupt prioritization; IEEE488 interface; user/game port interface 4256041-11of15.gif - cassette i/f port 4256041-12of15.gif - main oscillators & PLL 4256041-13of15.gif - video output circuit 4256041-14of15.gif - [List of power filter capacitors for each IC] 4256041-15of15.gif - [FPLA logic equations] 8088.gif 8088.txt - The 8088 co-processor board for B-series machines. Reverse engineered by - Ruud Baltissen . 8256043-01of14-left.gif 8256043-01of14-right.gif - µP, address & data buffers, bus arbitration 8256043-02of14-left.gif 8256043-02of14-right.gif - master timing 8256043-03of14-left.gif 8256043-03of14-right.gif - DRAM address & refresh 8256043-04of14-left.gif 8256043-04of14-right.gif - DRAMs, segments 1-2 8256043-05of14-left.gif 8256043-05of14-right.gif - DRAMs, segments 3-4 8256043-06of14-left.gif 8256043-06of14-right.gif - ROM array, 1k×8 static RAM 8256043-07of14-left.gif 8256043-07of14-right.gif - system decode 8256043-08of14-left.gif 8256043-08of14-right.gif - CRTC, video shift register 8256043-09of14-left.gif 8256043-09of14-right.gif - video RAM, address mux, latch 8256043-10of14-left.gif 8256043-10of14-right.gif - keyboard port, RS232C 8256043-11of14-left.gif 8256043-11of14-right.gif - user I/O ports, IEEE 8256043-12of14-left.gif 8256043-12of14-right.gif - SID, dot clock oscillator, expansion connector 8256043-13of14.gif - video output, power indicator 8256043-14of14.gif - I.C. count, power consumption 8256059-01.gif 8256059-02.gif 8256059-03.gif 8256059-04.gif 8256059-05.gif 8256059-06.gif 8256059-07.gif 8256059-08.gif 8256059-09.gif 8256059-10.gif 8256059-11.gif 8256059-12.gif - These schematics seem to be quite identical with 8256043. README - General information about the Commodore Model II computers. README500 - Information about the Commodore 500 a.k.a. PET II. p500-keyboard.txt - Commodore P500 Keyboard Schematic. Composed by Tony Duell - . computers/b/drives@ -> drives/old computers/b/firmware@ -> ../firmware/computers/b computers/c128/ * The Commodore 128 existed in three different major board versions: The * first board was used in the flat 128 and in the plastic-cased 128D. Then * came the 128DCR board, with the floppy controller integrated on the * motherboard. There was also a 128CR (cost-reduced flat 128). 310378-1-left.gif 310378-1-right.gif 310378-2-left.gif 310378-2-right.gif 310378-3-left.gif 310378-3-right.gif 310378-4-left.gif 310378-4-right.gif - These are the schematic diagrams of the Commodore 128 main board ("flat - C128" and C128D in plastic case). They were on eight pages in the - Commodore 128 Programmer's Reference Guide, two pages containing one - engineering sheet. 310378-update.zip - Update to the Commodore 128 Service Manual, containing the two revised - pages in the 310378 schematic revision 7A. c128cr.jpg - A black&white picture of a cost-reduced flat Commodore 128 circuit board. - This model never entered mass production; this is an engineering sample - possessed by Raymond Carlsen. The board says "PCB ASSY NO. 250783", "C= - commodore C128CR REV.3", "PCB NO. 252270", and "C128CR No.2 ENG. SAMPLE - Jun/9/'86 KNT". c128dcr-1-left.gif c128dcr-1-right.gif c128dcr-2-left.gif c128dcr-2-right.gif c128dcr-3-left.gif c128dcr-3-right.gif c128dcr-4-left.gif c128dcr-4-right.gif c128dcr-5-left.gif c128dcr-5-right.gif - These are the schematic diagrams of the Commodore 128DCR main board - (metal case C128D with built-in 1571CR floppy controller). The diagrams - were scanned from a 64'er Sonderheft, and they appear to be a copy of - schematic 252451. - According to Nicolas Welte, there is an error on the right half of page - 5. The 74LS14 hex Schmitt-trigger inverter U113, pin 13 is connected to - WPRT* (misprinted WTRT* on U105), which doesn't make any sense. - Obviously it should be connected to STP1 instead, which is three lines - more to the right! computers/c128/drives@ -> drives/new computers/c128/firmware@ -> ../firmware/computers/c128 computers/c128/manual/ * Service Manual C-128/C128D Computer, November 1987, PN-314001-08 00-title.gif - Title page 00.gif - Table of contents 01.gif - Specifications 02.gif - Parts list 03.gif - Block diagram (wide sheet) 04.gif - Bus architecture 05.gif 06.gif - 8502 microprocessor 07.gif 08.gif - Z-80 microprocessor 09.gif 10.gif 11.gif - Memory architecture 12.gif 13.gif 14.gif 15.gif - Read Only Memory 16.gif 17.gif - Random Access Memory 18.gif 19.gif 20.gif - Memory Management Unit 21.gif 22.gif 23.gif 24.gif 25.gif 26.gif 27.gif 28.gif - Programmed Logic Array 29.gif 30.gif - 8701 clock generator 31.gif - Video interface 32.gif 33.gif - 8564 Video Interface Chip 34.gif 35.gif 36.gif - 8563 Video Controller 37.gif 38.gif 39.gif - 8568 CRT Controller 40.gif 41.gif - 8580 Sound Interface Device 42.gif 43.gif 44.gif 45.gif 46.gif 47.gif - Floppy disk drive read/write head amplifier 48l.gif 48r.gif 49.gif - Input/Output circuits: Cassette interface 50.gif 51.gif - Keyboard 52.gif - Expansion bus 53.gif 54.gif - Serial bus 55.gif 56.gif - Troubleshooting: Common line definitions 57.gif - Common ICs (pin assignments and logic) 58.gif 59.gif 60.gif 61.gif 62.gif 63.gif - Board layout, PCB assy #310379 revision 6. Identifying factor: On - solder side of board at the expansion bus, CN1, the artwork #310381 - rev. 6 appears. 64.gif - PCB assembly #310379 rev. 6 65.gif 66l.gif 66r.gif - I/O - Control Ports, Keyboard, User Port, Serial Port, Cassette Port - Schematic 310378 rev. 6, sheet 1 of 4 67l.gif 67r.gif - Microprocessors, MMU, SID, PLA, power supply - Schematic 310378 rev. 6, sheet 2 of 4 68l.gif 68r.gif - Video, Clock, Reset - Schematic 310378 rev. 6, sheet 3 of 4 69l.gif 69r.gif - RAM, ROM - Schematic 310378 rev. 6, sheet 4 of 4 70.gif - Board layout, PCB ASSY #310379 revision 7. Identifying factor: On - solder side of board at the expansion bus, CN1, the artwork #310381 - rev. 7 appears. 71.gif - PCB assembly #310379 rev. 7 72.gif 73l.gif - Quick reference (table of topics and page numbers) 73r.gif - I/O - control ports, keyboard, user port, serial port, cassette port - Schematic 310378 rev. 7, sheet 1 of 4 74l.gif - Quick reference (table of topics and page numbers) 74r.gif - Microprocessors, MMU, SID, PLA, power supply - Schematic 310378 rev. 7A, sheet 2 of 4 75l.gif - Quick reference (table of topics and page numbers) 75r.gif - Video, clock, reset - Schematic 310378 rev. 7A, sheet 3 of 4 76l.gif - Quick reference (table of topics and page numbers) 76r.gif - RAM, ROM - Schematic 310378 rev. 7, sheet 4 of 4 77.gif - RF modulator 78.gif - Power supply schematic - for reference only: Mitsumi - PN-252449-01 79.gif - Power supply schematic - for reference only: Dee-Van - PN-252449-03 80l.gif - C128D major parts 80r.gif - Service parts reference diagram: "explosion diagram" of the C128DCR 81l.gif - Componets (sic) parts list - PCB assembly 250477 81r.gif - Board layout - PCB assembly 250477-01 (C128DCR) 82.gif - Schematic 252451, sheet 1 of 5 83.gif - Schematic 252451, sheet 2 of 5 84.gif - Schematic 252451, sheet 3 of 5 85.gif - Schematic 252451, sheet 4 of 5 86.gif - Schematic 252451, sheet 5 of 5 (floppy disk drive controller) computers/c128/power/ * Power supplies of the Commodore 128 computers * Scanned by Martin Buchty, uploaded by Oliver Weissflach, improved by * William Levak ps-128.gif - External switching power supply for the flat Commodore 128. This looks - like a hand-made copy of the Mitsumi power supply schematic, Commodore - part number 252449-01, page 78 of the service manual. ps-128d-german.gif - Internal switching power supply for the 128D (plastic case), German - version (Schaffer BV 223-5-04008) ps-128d-japanese.gif - Internal switching power supply for the 128D (plastic case), Japanese - version (Nagano Japan Radio Co. Ltd, 310639-03, NJD-1978) ps-128dcr-usa.gif - Internal switching power supply for the 128DCR (metal case), USA - version; includes measurement points and expected waveforms ps-128dcr1.gif - Internal switching power supply for the 128DCR (metal case), 1st - version (linearly regulated 12 volts DC output) ps-128dcr2.gif - Internal switching power supply for the 128DCR (metal case), 2nd - version (Tohoku Metal Industries 1403Et, 5628-C001-00) computers/c64/ * Here are some schematic diagrams of the Commodore 64. 250469-rev.A-left.gif 250469-rev.A-right.gif 250469-rev.B-right.gif - Commodore 64c rev.A and rev.B (new design). The 64c boards have the - following texts: PCB ASSY NO. 250469 and PCB NO. 252311 REV.A (or B on - newer boards). The difference between the two revisions is in the Gate - Array chip: The one in rev.B includes COLOR RAM. That is why only the - right half of the schematic diagram differs. The REV.A schematics also - has the part number 252312. 251138-1of2.gif 251138-2of2.gif - Commodore 64 schematic diagram 251138 from the Service Manual 251469-1of2.gif 251469-2of2.gif - Commodore 64 schematic diagram 251469 from the Service Manual 252278-1.gif 252278-2.gif - Commodore 64 schematic diagram 252278. This seems to be an intermediate - cost-reduced version, with 64kb×4 memory chips but small ROMs. 252312-left.gif 252312-right.gif - A bit better scan of the 250469 REV.A, with 8 levels of gray. 326100.png - Commodore MAX Machine schematic diagram (also known as "VICKIE", VIC-10 - and VC-10). The original was very noisy; the contrast was improved after - scanning. In the scanning process, the top left and bottom right corners - were omitted by mistake. The bottom right corner has been augmented. 326106-1of2.gif 326106-2of2.gif - Commodore 64 schematic diagram 326106 from the Service Manual c64-cassette-io.gif - A block diagram of the Commodore 64 cassette I/O circuitry. Taken from - the SAMS C64 Troubleshooting Guide. c64-powersupply.gif - A block diagram of the Commodore 64 internal power supply (how the +12V, - +9V and TOD clock signals are generated from the 9V AC input). Taken from - the SAMS C64 Troubleshooting Guide. c64-r1.chips.gif - A chip location diagram of the first C64 board revision. Assy number - unknown, or maybe 251138. Taken from the SAMS C64 Troubleshooting Guide. c64-video.gif - A block diagram of the video circuitry in the first C64 board revision. - Taken from the SAMS C64 Troubleshooting Guide. c64bus.gif - A block diagram of the bus signals in the C64. c64extps.gif - Commodore 64 Power Supply, part no. 902503-02, input 116V 60Hz 40W. This - is the North American power supply that can be taken apart. The schematic - was drawn by William Levak. According to him, the transistor and the 300 - ohm resistor can be removed and replaced with a standard +5V 750mA - voltage regulator, which is much more reliable. ciasid.gif - CIA and SID pinouts and general data cpupla.gif - 6510 and PLA pinouts and general data mem.gif - 2048k*8 SRAM pinout and general data. VIA pinout. modulator-251025.gif - Modulator schematic 251025 from the Service Manual modulator-251696.gif - Modulator schematic 251696 from the Service Manual prg-cpu-left.gif prg-cpu-right.gif prg-vic-left.gif prg-vic-right.gif - Commodore 64 schematic diagram, scanned with 360 DPI, 2 colours. This - seems to be the same (buggy) schematic that was published in the - Commodore 64 Programmer's Reference Guide, but has been partially - translated into German. - The vic part contains the ROMs, SIDs, Video Controller, RAMs, Address- - decoding, Expansion Port and User Port. - The cpu part contains the Port elements (CIA), CPU, AC-Adaptor, Timer, - Port Layout - All resistors are 0.25W ±5% and all capacitors are in µF, unless - otherwise stated. ultimax.gif - Commodore VIC-10, a.k.a. UltiMax a.k.a. "Vickie" schematic diagram, drawn - by Ruud Baltissen. For more information on this extremely rare machine, - see . See also - 326100.png. computers/c64/cartridges@ -> cartridges/c64 computers/c64/drives@ -> drives/new computers/c64/firmware@ -> ../firmware/computers/c64 computers/c64/manual-html/ computers/c64/manual/ * Service Manual, Model C64 Computer, Feb. 1985 PN-314001-02 c64--title.gif - title page c64-00.gif - contents c64-01.gif - specifications c64-02.gif - major parts c64-03.gif - block diagram c64-04.gif c64-05.gif c64-06.gif c64-07.gif c64-08.gif c64-09.gif c64-10.gif c64-11.gif c64-12.gif c64-13.gif - circuit theory c64-14.gif c64-15.gif c64-16.gif - troubleshooting guide c64-17.gif - board identification c64-18.gif - board layout #326298-01 c64-19.gif c64-20.gif - parts list for 326298 c64-21l.gif - 6526 and 6581 pinouts c64-21r.gif - schematic 326106 sheet 1 of 2 c64-22l.gif - RAM information c64-22r.gif - schematic 326106 sheet 2 of 2 c64-23.gif - board layout #250407-04 c64-24.gif c64-25.gif - parts list for 250407-04 c64-26l.gif - modulator schematic #251025 c64-26r.gif - schematic 251138 sheet 1 of 2 c64-27l.gif - 6510 and PLA pinouts c64-27r.gif - schematic 251138 sheet 2 of 2 c64-28.gif - board layout #250425-01 c64-29.gif c64-30.gif - parts list for 250425-01 c64-31l.gif - modulator schematic #251696 c64-31r.gif - schematic #251469 sheet 1 of 2 c64-32l.gif - video chip pinout c64-32r.gif - schematic #251469 sheet 2 of 2 computers/c64/sx-64/ 251103_l.gif 251103_r.gif - The SX-64 CPU board, rev.A. Assy number 251103. 251107_l.gif 251107_r.gif - The SX-64 I/O board, rev.A. Assy number 251107. 251110_l.gif 251110_r.gif - The SX-64 FDD board, rev.A. Assy number 251110. power_l.gif power_r.gif - The SX-64 power supply. computers/pet/ answers.txt - Some answers to questions about the PET system boards. Written by - William M. Levak. diagnostics.txt - Description for the diagnostic connectors for the original PET. Written - by William M. Levak. computers/pet/2001/ * The PET 2001, the first microcomputer by Commodore. 320008-2.gif 320008-3.gif - Schematic 320026 sheets 2 and 3 of 3 for circuit board 320008 with 6540 - ROMs and 6550 RAMs. 320081-2.gif 320081-3.gif - Schematic 320082 sheets 2 and 3 of 3 for circuit board 320081 with - 2316B ROMs and 6550 RAMs. 320130-1.gif - Schematic 320130 sheet 1 of 3. There were four variations of the - original PET(static board). This first sheet applies to all. 320132-2.gif 320132-3.gif - Schematic 320130 sheets 2 and 3 of 3 for circuit board 320132 with 6540 - ROMs and 2114 RAMs. 320137-2.gif 320137-3.gif - Schematic 320135 sheets 2 and 3 of 3 for circuit board 320137 with - 2316B ROMs and 2114 RAMs. notes-2.gif - Notes to go with video board schematic. parts-1.gif parts-2.gif parts-3.gif - Parts list for the system board. These are very early lists and do not - list any upgrade ROMs. parts-4.gif parts-5.gif parts-6.gif - Parts list for the video board. video-1.gif - Schematic of the video board. video-2.gif - Schematic 320032 for second version of the video board. video-3.gif - Schematic 320033 for third version of the video board. video-layout.gif - Video board parts layout. The original is in black with blue shading. - The quality of the printed copy may depend critically on the quality of - your printer. computers/pet/2001N/ * This is the service information on the 2001N/3000/4000 (no CRTC). This * is the dynamic system board. 320349-1.gif - Schematic 320349 page 1 of 9, microprocessor-memory expansion 320349-2.gif - Schematic 320349 page 2 of 9, IEEE-488 interface 320349-3.gif - Schematic 320349 page 3 of 9, cassette & keyboard 320349-4.gif - Schematic 320349 page 4 of 9, ROMs 320349-5.gif - Schematic 320349 page 5 of 9, RAMs 320349-6.gif - Schematic 320349 page 6 of 9, master timing 320349-7.gif - Schematic 320349 page 7 of 9, Display logic 320349-8.gif - Schematic 320349 page 8 of 9, Display RAMs 320349-9.gif - Schematic 320349 page 9 of 9, voltage regulator 320351-1.gif 320351-2.gif 320351-3.gif 320351-4.gif 320351-5.gif - parts list 320351-6.gif - parts layout and jumper information 321445.gif - Schematic for 9" CRT display (later version than that with the 2001 - schematics) 321446.gif - Parts layout for 9" CRT display, schematic 321445 321447-01.gif 321447-02.gif 321447-03.gif 321447-04.gif 321447-05.gif 321447-06.gif 321447-07.gif 321447-08.gif 321447-09.gif 321447-10.gif - Oscilliscope waveforms for test points indicated on 321445 computers/pet/8032/ 320284.gif - Business keyboard specifications 321448.gif - 12" CRT display schematic 321449.gif - 12" CRT display parts layout 321450-01.gif 321450-02.gif 321450-03.gif 321450-04.gif 321450-05.gif 321450-06.gif 321450-07.gif 321450-08.gif 321450-09.gif 321450-10.gif - Oscilliscope traces of test points indicated on 321448 8032029-01.gif - schematic 8032029 sheet 1 of 11, CPU & memory expansion 8032029-02.gif - schematic 8032029 sheet 2 of 11, IEEE-488 interface 8032029-03.gif - schematic 8032029 sheet 3 of 11, cassette & keyboard 8032029-04.gif - schematic 8032029 sheet 4 of 11, ROMs 8032029-05.gif - schematic 8032029 sheet 5 of 11, main RAM 8032029-06.gif - schematic 8032029 sheet 6 of 11, master timing 8032029-07.gif - schematic 8032029 sheet 7 of 11, display address mux 8032029-08.gif - schematic 8032029 sheet 8 of 11, dot gen & display RAMs 8032029-09.gif - schematic 8032029 sheet 9 of 11, odd display RAMs 8032029-10.gif - schematic 8032029 sheet 10 of 11, CRTC and sync buffers 8032029-11.gif - schematic 8032029 sheet 11 of 11, voltage regulator 8032030-1.gif 8032030-2.gif 8032030-3.gif 8032030-4.gif 8032030-6.gif - parts list for schematic 8032029 8032034.gif - schematic for 12" display (another version) 8032035.gif - parts layout for 8032034 8032051-1.gif 8032051-2.gif - parts for main power supply 8032051-3.gif - Main power supply parts layout and wiring diagram (this power supply is - used in all later PETs and is almost identical to the power supply in - previous PETs) computers/pet/8296/ * Commodore 8296 schematic diagram 324644-1of9.gif - CPU, ROM & Memory Expansion 324644-2of9.gif - IEEE488 Interface 324644-3of9.gif - User Port, Cassette & Keyboard 324644-4of9.gif - Main Dynamic RAM & Multiplexers 324644-5of9.gif - Video Display 324644-6of9.gif - Master Timing, Oscillator & Reset 324644-7of9.gif - Power Supply 324644-8of9.gif - 64k-Dyn RAM & Logic, Addon 324644-9of9.gif - Block Diagram parts.txt - Commodore 8296 parts list, composed by William Levak. computers/pet/SuperPET/ * SuperPET or MicroMainFrame 9000 additional boards. A later version has * all boards combined into one. 324037-1.gif 324037-2.gif - Schematic of the 6809 system board 324038-1.gif 324038-2.gif 324038-3.gif 324038-4.gif - Parts list for the 6809 system board 324038-5.gif - Parts layout for the 6809 system board 324041-1.gif 324041-2.gif 324041-3.gif - Schematics for 64K memory board (not compatible with the 8096 64K - board) 324042-1.gif 324042-2.gif 324042-3.gif 324042-4.gif - Parts list for the memory board 324042-5.gif - Parts layout for the memory board 324052.gif - Assembly diagram for SuperPET boards 324055.gif - Schematic for 6702 daughter board. (The function of the 6702 is - unknown. Commodore refused to provide any information on this chip, - claiming it was proprietary information.) 324056.gif - Parts list and layout of the 6702 board 9000007-1.gif 9000007-2.gif 9000007-3.gif - Parts list for the combined SuperPET board 9000016.gif - Schematic for the combined SuperPET board 9000035.gif - Assembly diagram for the combined SuperPET board computers/pet/drives@ -> drives/old computers/pet/firmware@ -> ../firmware/computers/pet computers/pet/re/ * Here you will find the schematic diagrams of the Commodore PET * computers drawn by Ruud Baltissen. Everything else is covered except * the power supply and the power connector. 3008.gif - The PET 3008 schematic diagram. UltiCap source files are available - from the author. 3008.txt - Release notes for the PET 3008 schematic diagram. 8032.gif - The schematic diagram produced at 75 dpi, 2752x1884 pixels. 8032.txt - Release notes for the PET 8032 schematic diagram. computers/pet/univ/ * This is the universal system board used in the 4000-12 and later 8032 * computers. 8032080-1.gif 8032080-2.gif 8032080-3.gif 8032080-4.gif 8032080-5.gif 8032080-7.gif - parts list for universal system board 8032081-01.gif 8032081-02.gif 8032081-03.gif 8032081-04.gif 8032081-05.gif 8032081-06.gif 8032081-07.gif 8032081-08.gif 8032081-09.gif 8032081-10.gif 8032081-11.gif - Schematics for the universal system board. Most are the same as the - 8032 system board, but with the addition of jumpers to be configured as - a 40 col. computer. computers/pet/univ2/ * Universal system board (later version). There are many small changes, * mostly ferrite beads, and filter capacitors. There are also fewer * memory options on this board. 8032087-01.gif 8032087-02.gif 8032087-03.gif 8032087-04.gif 8032087-05.gif 8032087-06.gif 8032087-07.gif 8032087-08.gif 8032087-09.gif 8032087-10.gif 8032087-11.gif - System board schematics, pages 1 to 11 of 11. Titles are the same as - 8032 and previous universal board. 8032090-1.gif 8032090-2.gif 8032090-3.gif 8032090-4.gif 8032090-5.gif - parts list for system board. 8032090-7.gif - parts layout and jumper configuration. computers/plus4/ c116-251239-1.gif - Commodore 116 schematic 251239, sheet 1 of 3. Expansion port, cassette - port, audio/video connector, RF modulator, power supply, clock circuitry. c116-251239-2.gif - Commodore 116 schematic 251239, sheet 2 of 3. TED, processor, joysticks, - keyboard, ROM, RAM. c116-251239-3.gif - Commodore 116 schematic 251239, sheet 3 of 3. PLA and address decoding. c16-251788-1of3-left.gif c16-251788-1of3-right.gif - Commodore 16 schematic 251788, sheet 1 of 3. Expansion port, cassette - port, audio/video connector, RF modulator, power supply, clock circuitry. c16-251788-2of3-left.gif c16-251788-2of3-right.gif - Commodore 16 schematic 251788, sheet 2 of 3. TED, processor, joysticks, - keyboard, ROM, RAM. c16-251788-3of3-left.gif c16-251788-3of3-right.gif - Commodore 16 schematic 251788, sheet 3 of 3. PLA and address decoding. c16-251788-title.gif - Commodore 16 schematic 251788, title page. connectors-1.jpg - Commodore plus/4 and C16 connectors. User port (plus/4 only) and - cartridge port. Scanned from a Hungarian magazine. connectors-2.jpg - Commodore plus/4 and C16 connectors, second part. p4-left.jpg - Commodore plus/4 schematic sheet, left part. This is a very high- - resolution scan taken from a Hungarian magazine. p4-right.jpg - Commodore plus/4 schematic sheet, right part. This is a very high- - resolution scan taken from a Hungarian magazine. plus4-310164-1of4.gif plus4-310164-2of4.gif plus4-310164-3of4.gif plus4-310164-4of4.gif - Commodore plus/4 schematic 310164 from the German plus/4 user's guide. plus4-troubleshooting-1of4.gif plus4-troubleshooting-2of4.gif plus4-troubleshooting-3of4.gif plus4-troubleshooting-4of4.gif - Commodore Techtopics 1984 issue 6. Troubleshooting the plus/4. powersupply.gif - Commodore plus/4 power supply timing.gif - Commodore plus/4 timing (Phi 0 and Phi 2 signals in the single clock and - twice clock modes) computers/plus4/drives@ -> drives/new computers/plus4/firmware@ -> ../firmware/computers/plus4 computers/plus4/manual/ * Service Manual Model Plus 4 Computer Oct. 1984 PN-314001-04 p4--title.gif - title page p4-00.gif - table of contents p4-01.gif p4-02.gif - specifications and overview p4-03l.gif - case parts and accessories p4-03r.gif - drawing of Plus/4 p4-04.gif - parts layout p4-05.gif p4-06.gif - parts list for circuit board 310163-01 p4-07l.gif - keyboard matrix, 7501 & 7360 pinouts p4-07r.gif - schematic 310164(1 of 4) p4-08l.gif - 6551, PLA & 6529 pinouts and data p4-08r.gif - schematic 310164(2 of 4) p4-09l.gif - RAM pinout and sources, functional diagram p4-09r.gif - schematic 310164(3 of 4) p4-10l.gif - ROM pinouts p4-10r.gif - schematic 310164(4 of 4) p4-11.gif - RF modulator layout and schematic #251844 p4-12.gif - RF modulator layout and schematic #251311 p4-13.gif p4-14.gif p4-15.gif p4-16.gif - troubleshooting aides p4-17.gif - line definitions p4-18.gif - engineering change - serial port, C-64, C-16, PLUS 4 computers/vic20/ * The VIC-20 and the VIC-20CR 251027l1.gif 251027l2.gif 251027l3.gif 251027r1.gif 251027r2.gif 251027r3.gif - 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_1.gif 324001_2.gif 324001_3.gif - VC-20 rev.B (PAL, old design). Assy number 324001-03. Bad scanning - quality. vic20-left.tiff vic20-middle.tiff vic20-right.tiff - 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 - A block diagram of the VIC-20 bus signals. vic20mod.gif - The VIC-20 RF modulator (PAL). computers/vic20/cartridges@ -> cartridges/vic20 computers/vic20/drives@ -> drives/new computers/vic20/firmware@ -> ../firmware/computers/vic20 datassette/ * Datasette service manual model C2N/1530/1531, preliminary, Oct. 1984 PN- * 314002-02. Pages scanned in two parts are designated "l" and "r" for the * left and right parts. c2n.gif - This schematic is almost identical with the Commodore circuit board NP-090. - It uses two dual op-amps instead of one quad op-amp. cas--title.gif - title page cas-00.gif - contents cas-01.gif cas-02.gif - specifications, overview cas-03.gif cas-04.gif cas-05.gif cas-06.gif - troubleshooting guide cas-07.gif - PCB layout for #320009 cas-08l.gif - parts list for #320009 cas-08r.gif - schematic for #320009 cas-09.gif - PCB layout for #320109 cas-10l.gif - parts list for #320109 cas-10r.gif - schematic for #320109 cas-11.gif - PCB layout for #320275 cas-12l.gif - parts list for #320275 cas-12r.gif - schematic for #320275 cas-13.gif - PCB layout for #CMR-001-0 cas-14.gif - wiring diagram for #CMR-001-0 cas-15l.gif - parts list for #CMR-001-0 cas-15r.gif - schematic for #CMR-001-0 cas-16.gif - wiring diagram for #NP-090 cas-17l.gif - parts list for #NP-090 cas-17r.gif - schematic for #NP-090 cas-18.gif - PCB layout for #017-5001-01 cas-19.gif - wiring diagram for #017-5001-01 cas-20l.gif - parts list for #017-5001-01 cas-20r.gif - schematic for #017-5001-01 cas-update.gif - announcement of engineering change for CMR-001-0, 017-5001-01 & NP-090 drives/ * Commodore disk drives drives.txt - Drive mechanisms used by Commodore. Composed by William Levak. drives/new/ * Here are schematic diagrams of new Commodore disk drives (with serial bus * interface) drives/new/1541/ * There are several versions of the Commodore 1541 disk drive. Some are * covered by the technical manual, other schematics were scanned from * later documents. There is even a reverse engineered diagram of the * 1541-II drive. 1541-II-powersupply.gif - Reverse-engineered schematic diagram of the 110-volt 1581 and 1541-II - power supply. Created and uploaded by William Levak - . According to him, you have to break the case - open to get inside. Jameco sells a case that can be used to replace - it. 1541-II.340503.gif - 1541-II schematic diagram, by Commodore. According to the 1571 Service - Manual, the Gate Array (251828 or 64H156) has some different revisions - (-01, -02 and -03). Revisions -01 and -03 have only 40 pins, but -02 - has 42 pins. Frank Kontros (jeno@kontr.uzhgorod.ua) reports that the - (chinese) 1541-II boards he has seen only carry the assy no. 340503, - although there are some differences. Also, his boards have the latest - (-03) Gate Array, with some wiring on the pin 21 (OSC). 1541-II.gif 1541-II.readme - 1541-II schematic diagram. Drawn and uploaded by Levente Hársfalvi - (Levente@Mi.Stud.PMMFK.JPTE.HU). boards.txt - Information about different 1541 board versions, composed by William - Levak. parts.txt - 1540/1541/1541A/1541B/SX-64 drive parts list, composed by William - Levak. pla.txt - 1541/1571 40/42 Pin Gate Arrays, composed by William Levak. short-251748-rev.E-left.gif short-251748-rev.E-right.gif - Short board 1541, assy no. 251748, rev.E, sheet 3 of 4. On this board, - a 40-pin custom chip replaces some 74xx logic. drives/new/1541/service/ drives/new/1541/tech/ * Commodore Single Disk Drive, Technical Manual, Model 1540/1541, P/N * 990445. There is no date, but it looks to be about 1984. This is an * early version covering only the 1540 and 1541, with an update that * covers the 1541B. 1541--title.gif - cover page 1541-00.gif - disclaimer 1541-01.gif - contents 1541-02.gif 1541-03.gif - introduction 1541-04.gif 1541-05.gif 1541-06.gif 1541-07.gif 1541-08.gif 1541-09.gif 1541-10.gif 1541-11.gif 1541-12.gif 1541-13.gif 1541-14.gif 1541-15.gif 1541-16.gif - drive mechanism description and parts diagrams 1541-17.gif 1541-18.gif 1541-19.gif 1541-20.gif - service procedures and adjustments 1541-21.gif 1541-22.gif 1541-23.gif 1541-24.gif 1541-25.gif 1541-26.gif - parts list for 1540048-01 circuit board(short board) 1541-27.gif - parts layout for 1540048-01 circuit board(short board) 1541-28.gif - schematic for 1540048-01 circuit board(short board) 1541-29.gif 1541-30.gif 1541-31.gif 1541-32.gif 1541-33.gif - parts list for 1540008-02 circuit board(long board) 1541-33b-announce.gif - update announcement for the 1541B 1541-33b-chips.gif - parts list for 1541B board #250448 1541-33b-left.gif - left part of page 33b, parts layout for 1541B board #250448 1541-33b-right.gif - right part of page 33b, schematic for 1541B board #250448 1541-34.gif - parts layout for 1540008-02 circuit board(long board) 1541-35.gif - schematic for 1540008-02 circuit board(long board) 1541-36.gif 1541-37.gif 1541-38.gif - parts list for power supply 1541-39.gif - assembly of power supply 1541-40.gif - notice for common failure symptom: drive runs continuously drives/new/1551/ * Here is the schematic diagram of the Commodore 1551 disk drive. 1551crt.gif - Reverse engineered schematic diagram of the 1551 cartridge interface. - Drawn by Jerzy Sobola, June 20, 1999. Downloaded from - . 1551main.gif - Reverse engineered schematic diagram of the 1551 main board. Drawn by - Jerzy Sobola, June 20, 1999. Downloaded from - . This diagram shows - a 6523 at location U3, while the Commodore schematic diagram shows a - 6525A TPI there. 1551misc.gif - Reverse engineered schematic diagram of miscellanous 1551 parts. Drawn - by Jerzy Sobola, June 20, 1999. Downloaded from - . 251860.gif - Schematic diagram, revision 4 paddle-251925.png - Schematic diagram of the interface paddle that is plugged into the - cartridge port. The integrated circuits are a PLA that is used as an - address decoder, and a 6523 TPI. Uploaded by Attila Grósz. parts.txt - Commodore 1551 parts list, composed by William Levak. drives/new/1571/ * Here is the schematic diagram of the Commodore 1571 floppy disk drive. * The schematic also applies to the built-in 1571 in the Commodore 128D * to some extent, but not to the 1571CR, which is integrated on the * motherboard of the Commodore 128DCR. You can find those diagrams among * the Commodore 128 schematics. 310420-full.gif - 1571 PCB assembly #310420 schematic diagram, combined in one two-color - image of 9625×6503 pixels. 310420.gif - 1571 PCB assembly #310420 schematic diagram. This image was combined - from the 8 parts c1571-{bot,top}-{1,2}.gif, and it has only two colours - instead of the original 16. Resolution: 4812×3251 pixels. c1571-bot-1.gif c1571-bot-2.gif c1571-bot-3.gif c1571-bot-4.gif - Bottom half of the C1571 schematics (1 is the rightmost picture, 4 the - leftmost) c1571-layout.gif - The component layout diagram for the C1571 drive. c1571-top-1.gif c1571-top-2.gif c1571-top-3.gif c1571-top-4.gif - Top half of the C1571 schematics (1 is the rightmost picture, 4 the - leftmost) memorymap.txt - 1570/1571 and 1571CR (C128DCR) memory map, composed by William Levak. parts.txt - 1570/1571 and 1571CR (C128DCR) drive parts list, composed by William - Levak. readme-1571cr.txt - Differences between the 1571 and the 1571CR found in the 128DCR. drives/new/1571/manual/ * This directory contains an HTML version of the Commodore 1571 service * manual (PN-314002-04, October 1986). 00-front.html - Front page. 00contents.html - Table of contents. 01.html 02.html 03.html 04.html 05.html 06.html 07.html 08.html 09.html 10.html 11.html 12.html 13.html 14.html 15.html 16.html 17.html 18.html - The pages bar.gif bar2.gif bar_.gif fall.gif hpulse.gif lpulse.gif p03.gif p04a.gif p04b.gif p05a.gif p05b.gif p06.gif p07.gif p08a.gif p08b.gif p09.gif p10.gif p11.gif p12a.gif p12b.gif p13a.gif p13b.gif p13c.gif p14a.gif p14b.gif p14c.gif p14d.gif p14e.gif p14f.gif p15a.gif p15b.gif p15c.gif p15d.gif p15e.gif p15f.gif p16a.gif p16b.gif p16c.gif p16d.gif p16e.gif p16f.gif p18.gif point.gif rise.gif - Graphics for the pages drives/new/1581/ * Service Manual, 1581, 3.5" Disk Drive, June 1987 PN-314982-01 1581--title.gif - title page 1581-00.gif - contents 1581-01.gif 1581-02.gif 1581-03.gif 1581-04.gif - specifications 1581-05.gif 1581-06.gif - 6502 microprocessor 1581-07.gif 1581-08.gif - 8520A CIA 1581-09.gif 1581-10.gif 1581-11.gif - WD1770 FDC 1581-12.gif - parts list 1581-13.gif - assembly drawing 1581-14.gif - board layout #250471 1581-15.gif 1581-16.gif 1581-17.gif 1581-18.gif - schematic #252380 rev. 4 parts.txt - 1581 parts list, composed by William Levak. powersupply.gif - Reverse-engineered schematic diagram of the 110-volt 1581 and 1541-II - power supply. Created and uploaded by William Levak - . According to him, you have to break the case - open to get inside. Jameco sells a case that can be used to replace - it. drives/old/ * Here are schematic diagrams of old Commodore disk drives (with IEEE-488 * interface) drives/old/1001/ * The SFD-1001 is a single floppy drive equipped with CBM DOS 2.7. number.gif - Commodore TechTopics issue 4, 1985, on changing the SFD-1001 device - number. parts.txt - SFD-1001 parts list, composed by William Levak. drives/old/1001/manual/ * These pages are from the Commodore SFD-1001 single floppy drive * service manual. The file names indicate page numbers. 45.gif - Printed circuit board assembly, single floppy control, 250416 rev. B, - "-01 shown", sheet 9 of 10. 46.gif - Printed circuit board assembly, single floppy control, 250416 rev. B, - "-03 shown", sheet 10 of 10. 47.gif - Schematic diagram, 6530 adaptor, 251252 rev. A, sheet 1 of 2. 49.gif - Schematic diagram, single floppy control, 251406 rev. A, sheet 1 of - 3. 50.gif - Schematic diagram, single floppy control, 251406 rev. A, sheet 2 of - 3. 51.gif - Schematic diagram, single floppy control, 251406 rev. A, sheet 3 of - 3. drives/old/2031/ * This is from a copy of the manual. The original had a number of double * fold-out sheets that had no apparent need for this format, so I made * them two separate pages when I coppied them. I have done the same * thing here but have numbered the pages "l"(left) and "r"(right) to * preserve the original pagination. contents.gif - Table of contents page-1.gif - 2031 Disk Drive Product Specification. page-10.gif - 2031 HP Upgrade Notes page-11l.gif - 2031 HP Circuit Theory page-11r.gif - 2031 schematic diagram #2031038, sheet 1 of 4 page-12l.gif - 2031 HP Circuit Theory page-12r.gif - 2031 schematic diagram #2031038, sheet 2 of 4 page-13l.gif - 2031 HP Circuit Theory page-13r.gif - 2031 schematic diagram #2031038, sheet 3 of 4 page-14l.gif - 2031 HP Circuit Theory page-14r.gif - 2031 schematic diagram #2031038, sheet 4 of 4 page-15l.gif page-15r.gif - 2031 HP Power Supp;y page-16l.gif - Parts List 95055000 Shugart Drive Assembly page-16r.gif - Shugart Drive Assembly 2031HP/2040/4040 page-17.gif - Resistance Checks High Profile - Shugart Drive page-18l.gif - Parts list shugart board page-18r.gif - Shugart Servo Board (Commodore part #31414701) page-19.gif page-2.gif - Block Diagram page-20.gif page-21.gif page-22.gif page-23.gif page-24.gif page-25.gif page-26.gif page-27.gif page-28.gif - 2031 LP Circuit Theory page-29.gif - Parts List PCB Assembly #1540033 page-3.gif - Care and Maintenance - Device Number Change page-30l.gif - PCB Assembly #1540033 Board Layout page-30r.gif - Schematic 1540039 page-31l.gif page-31r.gif - 1540/41/2031 LP Power Supply (also similar to the SFD-1001) page-32.gif - Resistance Checks Low Profile - Alps Drive page-33l.gif - Parts List Alps Drive page-33r.gif - Alps Drive Assemblies 1540/41/2031 LP page-34.gif - Alps Motor Control Board Schematic page-4.gif - Overview - Flash Code page-5.gif - Casework/Accessory Parts List page-6.gif page-7.gif - Troubleshooting Guide page-8.gif - PCB Assembly #2031040 Board Layout page-9.gif - Parts List PCB Assembly #2031040-01 page-title.gif - Title page. Service Manual, 2031 Disk Drive, High and Low Profile, - Dec. 1985 PN-314011-01. parts.txt - 2031 parts list, composed by William Levak. drives/old/4040/ * The Commodore 2040/3040/4040 floppy disk drive 320806-1.gif 320806-2.gif 320806-3.gif - digital circuit board schematics 320806-layout.gif - digital circuit board parts layout 320816-layout.gif - analog circuit board parts layout 320816.gif - analog circuit board schematic memorymap.txt - 2040/3040/4040 memory map, composed by William Levak. parts.txt - 2040/3040/4040 parts list, composed by William Levak. shugart-1.gif - drive mechanism parts list shugart-2.gif - drive mechanism parts layout drives/old/8050/ * Service Manual 8050 - 8250 Dual Disk Drives, June 1985, PN-314011-03 * This manual contained many triple width fold out pages. Most had a * wide enough margin so that they could be scanned as a double width * page. Those that could not are designated with a "l" for left and "r" * for right parts of the page. All but page 13 could be split so that no * information was cut in two by the split. 8050--title.gif - Title page 8050-00.gif - Contents 8050-01.gif - Specifications 8050-02.gif - PCB, ROM and drive identification. 8050-03.gif - accessory parts 8050-04.gif - device number 8050-05.gif - Care and Maintenance / Power Up Diagnostic Codes 8050-06.gif 8050-07.gif - troubleshooting guide 8050-08.gif - Board Layout for Micropolis analog board 8050006 8050-09.gif - parts list for Micropolis analog board 8050006 8050-10.gif 8050-11.gif 8050-12.gif - schematics for Micropolis analog board 805006 8050-13l.gif 8050-13r.gif - board layout for Tandon analog board 8050044 8050-14.gif - parts list for Tandon analog board 8050044 8050-15.gif 8050-16.gif 8050-17.gif - schematics for Tandon analog board 8050044 8050-18.gif - parts layout for MPI analog board 8250023 8050-19.gif - parts list for MPI analog board 8250023 8050-20.gif 8050-21.gif 8050-22.gif - schematics for MPI analog board 8250023 8050-23.gif - board layout for digital board 8050002 8050-24.gif - parts list for digital board 8050002 8050-25.gif 8050-26.gif 8050-27.gif - schematics for digital board 8050002 8050-28.gif - power supply assembly 8050029 8050-29.gif - resistance checks Micropolis and Micropolis Safari drives 8050-30l.gif 8050-30r.gif - Micropolis drive assemblies 8050/8250 8050-31l.gif 8050-31r.gif - Micropolis Safari drive assemblies 8050/8250 8050-32.gif - resistance checks Tandon drives 8050-33l.gif 8050-33r.gif - Tandon drive assemblies 8050/8250 8050-34.gif - resistance checks MPI drives 8050-35l.gif 8050-35r.gif - MPI drive assemblies 8050/8250 8050-36.gif - schematic for MPI servo 314227-01 parts.txt - 8050/8250 parts list, composed by William Levak. drives/old/9090/ * Commodore Hard Disk Drive Technical Manual, Model 9060/9090, P/N 990441 00.gif - Cover page 01.gif 02.gif 03.gif 04.gif 05.gif 06.gif 07.gif 08.gif 09.gif 10.gif 11.gif 12.gif 13.gif 14.gif 15.gif 16.gif 17.gif 18.gif 19.gif 20.gif 21.gif 22.gif 23.gif 24.gif 25.gif 26.gif 27.gif 28.gif 29.gif - Text pages a1.gif - Appendix 1: Major subassemblies a2.gif - Appendix 2: Recommended Spare Parts List a3.gif - Appendix 3: Index of schematic diagrams i.gif - Table of Contents, page i ii.gif - Table of Contents (cont.), page ii iii.gif - Illustrations (Figures and Tables), page iii parts.txt - 9060/9090 parts list, composed by William Levak. drives/old/9090/schematics/ 187040-001-1of2.gif 187040-001-2of2.gif - TM600 Control and Data Schematic 187045-001.gif - TM600 Control and Data PCB Assembly 187065-001-3of3.gif - TM600 Spindle Control PCB Assembly 188008-001-1of7.gif 188008-001-2of7.gif 188008-001-3of7.gif 188008-001-4of7.gif 188008-001-5of7.gif 188008-001-6of7.gif 188008-001-7of7.gif - Disk Drive Controller Schematic 188008-001-assy.gif - Disk Drive Controller PCB Assembly 300010-002-1of3.gif 300010-002-2of3.gif 300010-002-3of3.gif - Winchester DOS/Controller Schematic 300013-002-1of3.gif - Winchester DOS/Controller PCB Assembly 300015-001-add.gif - Addendum to Drawing Number 300015-001, Fold Back Circuit 300015-001.gif - Power Supply Schematic 300018-001.gif - Power Supply PCB Assembly 300520-00x-1of2.gif 300520-00x-2of2.gif - Commodore Disk System Expanded View kim-1/ * The KIM-1 was a 6502 learning kit produced by MOS Technologies. These files * were reconstructed by Ruud Baltissen. README - Release notes build.txt - Preliminary instructions for building a KIM-1 hardware-manual.txt - KIM-1 Hardware Manual hardware-p125.gif - Schematic diagram for a single-instruction stepper for the KIM-1 (or any - 6502 computer), from the Hardware Manual page 125. kim-hints.txt - KIM-1 Frequently Asked Questions with answers kim-rebuild.gif - A KIM-1 schematic diagram with solely standard components (so that you can - build one yourself) kim.gif - The KIM-1 schematic diagram, reverse engineered by Ruud Baltissen kim.txt - Technical information about the KIM-1 user-manual.txt - KIM-1 User Manual kim-1/src@ -> ../src/kim-1 misc/ 1351-mouse.gif - The 1351 mouse schematic, drawn by Frank Kontros . - On the PCB there was the following text: ASSY 0101930 Rev.A. iec-protocol.gif - A flow diagram of Commodore's IEC protocol. printers/ 1515.gif - VC-1515 printer, unknown revision 1520009.gif - VC-1520 printer/plotter, rev.A, assy number 1520009. 1525.gif - VC-1525 printer, unknown revision 1526.gif - VC-1526 printer, unknown revision