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- <H1><A CLASS="LINK" HREF="FTP://FTP.FUNET.FI/PUB/CBM/SCHEMATICS/COMPUTERS/B/">FTP</A>://FTP.FUNET.FI/PUB/<A
- HREF="../../../INDEX.HTML">CBM</A>/<A
- HREF="../../INDEX.HTML">SCHEMATICS</A>/<A
- HREF="../INDEX.HTML">COMPUTERS</A>/B/</H1>
- <DIV CLASS="TOP">
- <P>tHE cOMMODORE mODEL b SERVICE MANUAL AND SCHEMATIC DIAGRAMS</P>
- </DIV>
- <H2><A CLASS="ANCHOR" NAME="DIRS">sUBDIRECTORIES</A></H2>
- <DIV CLASS="DIRS">
- <DL>
- <DT><A HREF="../../DRIVES/OLD/INDEX.HTML">DRIVES@</A></DT>
- <DD>dISK DRIVES</DD>
- <DT><A HREF="../../../FIRMWARE/COMPUTERS/B/INDEX.HTML">FIRMWARE@</A></DT>
- <DD>sYSTEM FIRMWARE</DD>
- </DL>
- </DIV>
- <H2><A CLASS="ANCHOR" NAME="FILES">fILES</A></H2>
- <DIV CLASS="FILES">
- <DL>
- <DT><A HREF="314010-06-I.GIF">314010-06-I.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">29724</SPAN></DT>
- <DD>sERVICE MANUAL, b MODEL COMPUTER (jAN. 1985, pn-314010-06), TITLE PAGE</DD>
- <DT><A HREF="314010-06-II.GIF">314010-06-II.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">27628</SPAN></DT>
- <DD>sERVICE MANUAL, b MODEL COMPUTER, TABLE OF CONTENTS</DD>
- <DT><A HREF="314010-06-P1.GIF">314010-06-P1.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">58149</SPAN></DT>
- <DD>pAGE 1: BLOCK DIAGRAM</DD>
- <DT><A HREF="314010-06-P2.GIF">314010-06-P2.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">46741</SPAN></DT>
- <DD>pAGE 2: b MODEL PARTS LIST</DD>
- <DT><A HREF="314010-06-P3-LEFT.GIF">314010-06-P3-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">60694</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="314010-06-P3-RIGHT.GIF">314010-06-P3-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">79404</SPAN></DT>
- <DD>pAGE 3: 8256048 BOARD LAYOUT</DD>
- <DT><A HREF="314010-06-P4.GIF">314010-06-P4.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">74105</SPAN></DT>
- <DD>pAGE 4: 8256048 pcb PARTS</DD>
- <DT><A HREF="314010-06-P5.GIF">314010-06-P5.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">66252</SPAN></DT>
- <DD>pAGE 5: 8256048 pcb PARTS, CONTINUED</DD>
- <DT><A HREF="314010-06-P6-LEFT.GIF">314010-06-P6-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">40857</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="314010-06-P6-RIGHT.GIF">314010-06-P6-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">42640</SPAN></DT>
- <DD>pAGE 6: KEYBOARD MATRIX</DD>
- <DT><A HREF="4256004-01-LEFT.GIF">4256004-01-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">35712</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="4256004-01-PARTS.GIF">4256004-01-PARTS.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">58167</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="4256004-01-RIGHT.GIF">4256004-01-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">44598</SPAN></DT>
- <DD>sWITCHING POWER SUPPLY</DD>
- <DT><A HREF="8088.GIF">8088.GIF</A>
- <SPAN CLASS="DATE">2002-03-05</SPAN>
- <SPAN CLASS="LENGTH">155989</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8088.TXT">8088.TXT</A>
- <SPAN CLASS="DATE">2002-04-19</SPAN>
- <SPAN CLASS="LENGTH">10991</SPAN></DT>
- <DD>tHE 8088 CO-PROCESSOR BOARD FOR b-SERIES MACHINES. rEVERSE ENGINEERED
- BY rUUD bALTISSEN <A CLASS="LINK" HREF="HTTP://RUUD.C64.ORG">HTTP://RUUD.C64.ORG</A>.</DD>
- <DT><A HREF="8256043-01OF14-LEFT.GIF">8256043-01OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">61535</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-01OF14-RIGHT.GIF">8256043-01OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">56042</SPAN></DT>
- <DD>{CBM-J}p, ADDRESS & DATA BUFFERS, BUS ARBITRATION</DD>
- <DT><A HREF="8256043-02OF14-LEFT.GIF">8256043-02OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">27636</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-02OF14-RIGHT.GIF">8256043-02OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">47170</SPAN></DT>
- <DD>MASTER TIMING</DD>
- <DT><A HREF="8256043-03OF14-LEFT.GIF">8256043-03OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">40539</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-03OF14-RIGHT.GIF">8256043-03OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">28812</SPAN></DT>
- <DD>dram ADDRESS & REFRESH</DD>
- <DT><A HREF="8256043-04OF14-LEFT.GIF">8256043-04OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">31695</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-04OF14-RIGHT.GIF">8256043-04OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">29054</SPAN></DT>
- <DD>dramS, SEGMENTS 1-2</DD>
- <DT><A HREF="8256043-05OF14-LEFT.GIF">8256043-05OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">31825</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-05OF14-RIGHT.GIF">8256043-05OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">29841</SPAN></DT>
- <DD>dramS, SEGMENTS 3-4</DD>
- <DT><A HREF="8256043-06OF14-LEFT.GIF">8256043-06OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">27122</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-06OF14-RIGHT.GIF">8256043-06OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">32195</SPAN></DT>
- <DD>rom ARRAY, 1KW8 STATIC ram</DD>
- <DT><A HREF="8256043-07OF14-LEFT.GIF">8256043-07OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">28442</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-07OF14-RIGHT.GIF">8256043-07OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">43144</SPAN></DT>
- <DD>SYSTEM DECODE</DD>
- <DT><A HREF="8256043-08OF14-LEFT.GIF">8256043-08OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">26866</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-08OF14-RIGHT.GIF">8256043-08OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">32189</SPAN></DT>
- <DD>crtc, VIDEO SHIFT REGISTER</DD>
- <DT><A HREF="8256043-09OF14-LEFT.GIF">8256043-09OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">22887</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-09OF14-RIGHT.GIF">8256043-09OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">26607</SPAN></DT>
- <DD>VIDEO ram, ADDRESS MUX, LATCH</DD>
- <DT><A HREF="8256043-10OF14-LEFT.GIF">8256043-10OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">45846</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-10OF14-RIGHT.GIF">8256043-10OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">42104</SPAN></DT>
- <DD>KEYBOARD PORT, rs232c</DD>
- <DT><A HREF="8256043-11OF14-LEFT.GIF">8256043-11OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">62363</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-11OF14-RIGHT.GIF">8256043-11OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">50878</SPAN></DT>
- <DD>USER i/o PORTS, ieee</DD>
- <DT><A HREF="8256043-12OF14-LEFT.GIF">8256043-12OF14-LEFT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">53904</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256043-12OF14-RIGHT.GIF">8256043-12OF14-RIGHT.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">50410</SPAN></DT>
- <DD>sid, DOT CLOCK OSCILLATOR, EXPANSION CONNECTOR</DD>
- <DT><A HREF="8256043-13OF14.GIF">8256043-13OF14.GIF</A>
- <SPAN CLASS="DATE">1998-03-29</SPAN>
- <SPAN CLASS="LENGTH">27850</SPAN></DT>
- <DD>VIDEO OUTPUT, POWER INDICATOR</DD>
- <DT><A HREF="8256043-14OF14.GIF">8256043-14OF14.GIF</A>
- <SPAN CLASS="DATE">1998-04-17</SPAN>
- <SPAN CLASS="LENGTH">81574</SPAN></DT>
- <DD>i.c. COUNT, POWER CONSUMPTION</DD>
- <DT><A HREF="8256059-01.GIF">8256059-01.GIF</A>
- <SPAN CLASS="DATE">1998-05-28</SPAN>
- <SPAN CLASS="LENGTH">159301</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-02.GIF">8256059-02.GIF</A>
- <SPAN CLASS="DATE">1998-06-02</SPAN>
- <SPAN CLASS="LENGTH">104788</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-03.GIF">8256059-03.GIF</A>
- <SPAN CLASS="DATE">1998-06-02</SPAN>
- <SPAN CLASS="LENGTH">104071</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-04.GIF">8256059-04.GIF</A>
- <SPAN CLASS="DATE">1998-06-02</SPAN>
- <SPAN CLASS="LENGTH">91274</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-05.GIF">8256059-05.GIF</A>
- <SPAN CLASS="DATE">1998-05-29</SPAN>
- <SPAN CLASS="LENGTH">92943</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-06.GIF">8256059-06.GIF</A>
- <SPAN CLASS="DATE">1998-05-29</SPAN>
- <SPAN CLASS="LENGTH">81230</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-07.GIF">8256059-07.GIF</A>
- <SPAN CLASS="DATE">1998-05-29</SPAN>
- <SPAN CLASS="LENGTH">97112</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-08.GIF">8256059-08.GIF</A>
- <SPAN CLASS="DATE">1998-05-29</SPAN>
- <SPAN CLASS="LENGTH">102877</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-09.GIF">8256059-09.GIF</A>
- <SPAN CLASS="DATE">1998-06-01</SPAN>
- <SPAN CLASS="LENGTH">76584</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-10.GIF">8256059-10.GIF</A>
- <SPAN CLASS="DATE">1998-06-02</SPAN>
- <SPAN CLASS="LENGTH">116642</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-11.GIF">8256059-11.GIF</A>
- <SPAN CLASS="DATE">1998-06-02</SPAN>
- <SPAN CLASS="LENGTH">150061</SPAN></DT>
- <DD> </DD>
- <DT><A HREF="8256059-12.GIF">8256059-12.GIF</A>
- <SPAN CLASS="DATE">1998-06-02</SPAN>
- <SPAN CLASS="LENGTH">136422</SPAN></DT>
- <DD>tHESE SCHEMATICS SEEM TO BE QUITE IDENTICAL WITH 8256043.</DD>
- <DT><A HREF="readme">readme</A>
- <SPAN CLASS="DATE">1998-10-20</SPAN>
- <SPAN CLASS="LENGTH">1169</SPAN></DT>
- <DD>gENERAL INFORMATION ABOUT THE cOMMODORE mODEL ii COMPUTERS.</DD>
- </DL>
- </DIV>
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