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| The Commodore Model B service manual and schematic diagrams | |
| ../ | [Parent directory] |
| drives@ | Disk drives |
| firmware@ | System firmware |
| Date | Size | Filename | Description | |
|---|---|---|---|---|
| 1998-03-29 | 29724 | 314010-06-i.gif | Service manual, B model computer (Jan. 1985, PN-314010-06), title page | |
| 1998-03-29 | 27628 | 314010-06-ii.gif | Service manual, B model computer, table of contents | |
| 1998-03-29 | 58149 | 314010-06-p1.gif | Page 1: block diagram | |
| 1998-03-29 | 46741 | 314010-06-p2.gif | Page 2: B model parts list | |
| 1998-03-29 | 60694 | 314010-06-p3-left.gif | ||
| 1998-03-29 | 79404 | 314010-06-p3-right.gif | Page 3: 8256048 board layout | |
| 1998-03-29 | 74105 | 314010-06-p4.gif | Page 4: 8256048 PCB parts | |
| 1998-03-29 | 66252 | 314010-06-p5.gif | Page 5: 8256048 PCB parts, continued | |
| 1998-03-29 | 40857 | 314010-06-p6-left.gif | ||
| 1998-03-29 | 42640 | 314010-06-p6-right.gif | Page 6: keyboard matrix | |
| 1998-03-29 | 35712 | 4256004-01-left.gif | ||
| 1998-03-29 | 58167 | 4256004-01-parts.gif | ||
| 1998-03-29 | 44598 | 4256004-01-right.gif | Switching power supply | |
| 1998-03-29 | 61535 | 8256043-01of14-left.gif | ||
| 1998-03-29 | 56042 | 8256043-01of14-right.gif | �P, address & data buffers, bus arbitration | |
| 1998-03-29 | 27636 | 8256043-02of14-left.gif | ||
| 1998-03-29 | 47170 | 8256043-02of14-right.gif | master timing | |
| 1998-03-29 | 40539 | 8256043-03of14-left.gif | ||
| 1998-03-29 | 28812 | 8256043-03of14-right.gif | DRAM address & refresh | |
| 1998-03-29 | 31695 | 8256043-04of14-left.gif | ||
| 1998-03-29 | 29054 | 8256043-04of14-right.gif | DRAMs, segments 1-2 | |
| 1998-03-29 | 31825 | 8256043-05of14-left.gif | ||
| 1998-03-29 | 29841 | 8256043-05of14-right.gif | DRAMs, segments 3-4 | |
| 1998-03-29 | 27122 | 8256043-06of14-left.gif | ||
| 1998-03-29 | 32195 | 8256043-06of14-right.gif | ROM array, 1k�8 static RAM | |
| 1998-03-29 | 28442 | 8256043-07of14-left.gif | ||
| 1998-03-29 | 43144 | 8256043-07of14-right.gif | system decode | |
| 1998-03-29 | 26866 | 8256043-08of14-left.gif | ||
| 1998-03-29 | 32189 | 8256043-08of14-right.gif | CRTC, video shift register | |
| 1998-03-29 | 22887 | 8256043-09of14-left.gif | ||
| 1998-03-29 | 26607 | 8256043-09of14-right.gif | video RAM, address mux, latch | |
| 1998-03-29 | 45846 | 8256043-10of14-left.gif | ||
| 1998-03-29 | 42104 | 8256043-10of14-right.gif | keyboard port, RS232C | |
| 1998-03-29 | 62363 | 8256043-11of14-left.gif | ||
| 1998-03-29 | 50878 | 8256043-11of14-right.gif | user I/O ports, IEEE | |
| 1998-03-29 | 53904 | 8256043-12of14-left.gif | ||
| 1998-03-29 | 50410 | 8256043-12of14-right.gif | SID, dot clock oscillator, expansion connector | |
| 1998-03-29 | 27850 | 8256043-13of14.gif | video output, power indicator | |
| 1998-04-17 | 81574 | 8256043-14of14.gif | I.C. count, power consumption | |
| 1998-05-28 | 159301 | 8256059-01.gif | ||
| 1998-06-02 | 104788 | 8256059-02.gif | ||
| 1998-06-02 | 104071 | 8256059-03.gif | ||
| 1998-06-02 | 91274 | 8256059-04.gif | ||
| 1998-05-29 | 92943 | 8256059-05.gif | ||
| 1998-05-29 | 81230 | 8256059-06.gif | ||
| 1998-05-29 | 97112 | 8256059-07.gif | ||
| 1998-05-29 | 102877 | 8256059-08.gif | ||
| 1998-06-01 | 76584 | 8256059-09.gif | ||
| 1998-06-02 | 116642 | 8256059-10.gif | ||
| 1998-06-02 | 150061 | 8256059-11.gif | ||
| 1998-06-02 | 136422 | 8256059-12.gif | These schematics seem to be quite identical with 8256043. | |
| 1998-10-20 | 1169 | README | General information about the Commodore Model II computers. |
[FTP://NIC.FUNET.FI/pub/cbm/schematics/computers/b/ | SunSITE ftp | SunSITE http]
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If you want to use any images or text from this site you must get written approval first. Click HERE to send an email request explaining your intended usage. |