<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.6.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="165.1" y2="0" width="0" layer="20"/>
<wire x1="165.1" y1="0" x2="165.1" y2="101.6" width="0" layer="20"/>
<wire x1="165.1" y1="101.6" x2="0" y2="101.6" width="0" layer="20"/>
<wire x1="0" y1="0" x2="0" y2="101.6" width="0" layer="20"/>
<text>DECtape Drive Emulation</text>
<text>DECtape Drive Emulation</text>
<text>VRS</text>
<text>VRS</text>
</plain>
<libraries>
<library name="sdcards">
<packages>
<package name="SCDA1A">
<description>SCDA1A0900, SCDA1A0901, SCDA1A0801, SCDA1A1301, SCDA1A1401, SCDA1A1501
(Mouser)</description>
</package>
</packages>
</library>
<library name="rcl">
<packages>
<package name="0207/10">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
type 0207, grid 10 mm</description>
</package>
<package name="C050-025X075">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 5 mm, outline 2.5 x 7.5 mm</description>
</package>
<package name="0309V">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
type 0309, grid 2.5 mm</description>
</package>
<package name="E2,5-7">
<description>&lt;b&gt;ELECTROLYTIC CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 2.54 mm, diameter 7 mm</description>
</package>
</packages>
</library>
<library name="crystal">
<packages>
<package name="HC49/S">
<description>&lt;b&gt;CRYSTAL&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="resistor-sil">
<packages>
<package name="SIL10">
<description>&lt;b&gt;Single In Line&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="diode">
<packages>
<package name="DO35Z10">
<description>&lt;B&gt;DIODE&lt;/B&gt;&lt;p&gt;
diameter 2 mm, horizontal, grid 10.16mm</description>
</package>
<package name="DO35-10">
<description>&lt;B&gt;DIODE&lt;/B&gt;&lt;p&gt;
diameter 2 mm, horizontal, grid 10.16 mm</description>
</package>
</packages>
</library>
<library name="dec-con">
<packages>
<package name="DEC40PINV">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="linear">
<packages>
<package name="DIL14">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="transistor-pnp">
<packages>
<package name="TO5">
<description>&lt;b&gt;TO-5&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="wirepad">
<packages>
<package name="2,15/1,0">
<description>&lt;b&gt;THROUGH-HOLE PAD&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="holes">
<packages>
<package name="3,2">
<description>&lt;b&gt;MOUNTING HOLE&lt;/b&gt; 3.2 mm with drill center</description>
</package>
</packages>
</library>
<library name="74xx-us">
<description>&lt;b&gt;TTL Devices, 74xx Series with US Symbols&lt;/b&gt;&lt;p&gt;
Based on the following sources:
&lt;ul&gt;
&lt;li&gt;Texas Instruments &lt;i&gt;TTL Data Book&lt;/i&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;Volume 1, 1996.
&lt;li&gt;TTL Data Book, Volume 2 , 1993
&lt;li&gt;National Seminconductor Databook 1990, ALS/LS Logic
&lt;li&gt;ttl 74er digital data dictionary, ECA Electronic + Acustic GmbH, ISBN 3-88109-032-0
&lt;li&gt;http://icmaster.com/ViewCompare.asp
&lt;/ul&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="DIL16">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="atmel">
<description>&lt;b&gt;AVR Devices&lt;/b&gt;&lt;p&gt;
Configurable logic, microcontrollers, nonvolatile memories&lt;p&gt;
Based on the following sources:&lt;p&gt;
&lt;ul&gt;
&lt;li&gt;www.atmel.com
&lt;li&gt;CD-ROM : Configurable Logic Microcontroller Nonvolatile Memory
&lt;li&gt;CadSoft download site, www.cadsoft.de or www.cadsoftusa.com , file at90smcu_v400.zip
&lt;li&gt;avr.lbr
&lt;/ul&gt;
&lt;author&gt;Revised by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="DIL28-3">
<description>&lt;B&gt;Dual In Line&lt;/B&gt; 0.3 inch</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="IC1" library="atmel" package="DIL28-3" value="MEGA8-PLS"/>
<element name="J1" library="sdcards" package="SCDA1A" value="SDCARDMOUSER"/>
<element name="R1" library="rcl" package="0207/10" value=""/>
<element name="R2" library="rcl" package="0207/10" value="0"/>
<element name="X1" library="crystal" package="HC49/S" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="1667008"/>
</element>
<element name="D1" library="diode" package="DO35Z10" value="3.3V"/>
<element name="C1" library="rcl" package="C050-025X075" value=".01"/>
<element name="A2" library="dec-con" package="DEC40PINV" value=""/>
<element name="A3" library="dec-con" package="DEC40PINV" value=""/>
<element name="B2" library="dec-con" package="DEC40PINV" value=""/>
<element name="B3" library="dec-con" package="DEC40PINV" value=""/>
<element name="A5" library="dec-con" package="DEC40PINV" value=""/>
<element name="R10" library="rcl" package="0309V" value="100 1/2W"/>
<element name="IC2" library="linear" package="DIL14" value="LM339N"/>
<element name="IC3" library="linear" package="DIL14" value="LM339N"/>
<element name="D2" library="diode" package="DO35-10" value="1N4148"/>
<element name="D3" library="diode" package="DO35-10" value="1N4148"/>
<element name="R3" library="rcl" package="0207/10" value="10K"/>
<element name="D4" library="diode" package="DO35-10" value="1N4148"/>
<element name="D5" library="diode" package="DO35-10" value="1N4148"/>
<element name="D6" library="diode" package="DO35-10" value="1N4148"/>
<element name="R4" library="rcl" package="0207/10" value="10K"/>
<element name="D7" library="diode" package="DO35-10" value="1N4148"/>
<element name="D8" library="diode" package="DO35-10" value="1N4148"/>
<element name="D9" library="diode" package="DO35-10" value="1N4148"/>
<element name="R5" library="rcl" package="0207/10" value="10K"/>
<element name="D10" library="diode" package="DO35-10" value="1N4148"/>
<element name="D11" library="diode" package="DO35-10" value="1N4148"/>
<element name="D12" library="diode" package="DO35-10" value="1N4148"/>
<element name="R6" library="rcl" package="0207/10" value="10K"/>
<element name="D13" library="diode" package="DO35-10" value="1N4148"/>
<element name="D14" library="diode" package="DO35-10" value="1N4148"/>
<element name="D15" library="diode" package="DO35-10" value="1N4148"/>
<element name="R7" library="rcl" package="0207/10" value="10K"/>
<element name="D16" library="diode" package="DO35-10" value="1N4148"/>
<element name="R8" library="rcl" package="0207/10" value="0"/>
<element name="A6" library="dec-con" package="DEC40PINV" value=""/>
<element name="D18" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D19" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D20" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D21" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D22" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D23" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D24" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D25" library="diode" package="DO35Z10" value="3.3V"/>
<element name="IC4" library="74xx-us" package="DIL16" value="74LS148N"/>
<element name="D17" library="diode" package="DO35Z10" value="3.3V"/>
<element name="R9" library="rcl" package="0207/10" value="10K"/>
<element name="D26" library="diode" package="DO35Z10" value="3.3V"/>
<element name="R11" library="rcl" package="0207/10" value="10K"/>
<element name="D27" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D28" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D29" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D30" library="diode" package="DO35Z10" value="3.3V"/>
<element name="R12" library="rcl" package="0207/10" value="0"/>
<element name="Q1" library="transistor-pnp" package="TO5" value="2N2905"/>
<element name="C2" library="rcl" package="E2,5-7" value="10uf"/>
<element name="C3" library="rcl" package="E2,5-7" value="10uf"/>
<element name="C4" library="rcl" package="C050-025X075" value=".01"/>
<element name="C5" library="rcl" package="C050-025X075" value=".01"/>
<element name="C6" library="rcl" package="C050-025X075" value=".01"/>
<element name="C7" library="rcl" package="C050-025X075" value=".01"/>
<element name="C8" library="rcl" package="C050-025X075" value=".01"/>
<element name="C9" library="rcl" package="C050-025X075" value=".01"/>
<element name="+5V" library="wirepad" package="2,15/1,0" value=""/>
<element name="GND" library="wirepad" package="2,15/1,0" value=""/>
<element name="-12V" library="wirepad" package="2,15/1,0" value=""/>
<element name="D31" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D33" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D32" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D34" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D35" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D36" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D37" library="diode" package="DO35Z10" value="3.3V"/>
<element name="U$1" library="holes" package="3,2" value=""/>
<element name="U$2" library="holes" package="3,2" value=""/>
<element name="U$3" library="holes" package="3,2" value=""/>
<element name="U$4" library="holes" package="3,2" value=""/>
<element name="IC6" library="74xx-us" package="DIL16" value="74LS153N"/>
<element name="IC5" library="74xx-us" package="DIL16" value="74LS153N"/>
<element name="D38" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D39" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D40" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D41" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D42" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D43" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D44" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D45" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D46" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D47" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D48" library="diode" package="DO35Z10" value="3.3V"/>
<element name="D49" library="diode" package="DO35Z10" value="3.3V"/>
<element name="U$5" library="holes" package="3,2" value=""/>
<element name="RN4" library="resistor-sil" package="SIL10" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="RN3" library="resistor-sil" package="SIL10" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="RN2" library="resistor-sil" package="SIL10" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
</elements>
<signals>
<signal name="GND">
<contactref element="IC1" pad="22"/>
<contactref element="IC1" pad="8"/>
<contactref element="J1" pad="11"/>
<contactref element="R2" pad="2"/>
<contactref element="D1" pad="A"/>
<contactref element="C1" pad="2"/>
<contactref element="IC2" pad="12"/>
<contactref element="IC3" pad="12"/>
<contactref element="IC4" pad="8"/>
<contactref element="IC4" pad="5"/>
<contactref element="Q1" pad="1"/>
<contactref element="C3" pad="+"/>
<contactref element="C2" pad="-"/>
<contactref element="C4" pad="2"/>
<contactref element="C5" pad="2"/>
<contactref element="C6" pad="2"/>
<contactref element="C7" pad="2"/>
<contactref element="C8" pad="2"/>
<contactref element="C9" pad="2"/>
<contactref element="GND" pad="1"/>
<contactref element="D31" pad="C"/>
<contactref element="D37" pad="A"/>
<contactref element="D32" pad="A"/>
<contactref element="D33" pad="A"/>
<contactref element="D34" pad="A"/>
<contactref element="D35" pad="A"/>
<contactref element="D36" pad="A"/>
<contactref element="J1" pad="13"/>
<contactref element="J1" pad="14"/>
<contactref element="IC6" pad="8"/>
<contactref element="IC5" pad="8"/>
<contactref element="IC5" pad="13"/>
<contactref element="IC5" pad="3"/>
<contactref element="IC5" pad="15"/>
<contactref element="IC5" pad="1"/>
<contactref element="IC6" pad="3"/>
<contactref element="IC6" pad="13"/>
<contactref element="IC6" pad="15"/>
<contactref element="IC6" pad="1"/>
<contactref element="D49" pad="C"/>
<contactref element="D38" pad="C"/>
<contactref element="D39" pad="C"/>
<contactref element="D40" pad="C"/>
<contactref element="D41" pad="C"/>
<contactref element="D42" pad="C"/>
<contactref element="D43" pad="C"/>
<contactref element="D44" pad="C"/>
<contactref element="D45" pad="C"/>
<contactref element="D46" pad="C"/>
<contactref element="D47" pad="C"/>
<contactref element="D48" pad="C"/>
<contactref element="A3" pad="E"/>
<contactref element="B2" pad="E"/>
<contactref element="B3" pad="E"/>
<contactref element="A2" pad="E"/>
</signal>
<signal name="VCC">
<contactref element="IC1" pad="7"/>
<contactref element="R1" pad="2"/>
<contactref element="R8" pad="1"/>
<contactref element="IC4" pad="16"/>
<contactref element="IC1" pad="21"/>
<contactref element="IC1" pad="20"/>
<contactref element="R12" pad="1"/>
<contactref element="C2" pad="+"/>
<contactref element="C4" pad="1"/>
<contactref element="C5" pad="1"/>
<contactref element="C6" pad="1"/>
<contactref element="C7" pad="1"/>
<contactref element="+5V" pad="1"/>
<contactref element="IC6" pad="16"/>
<contactref element="IC5" pad="16"/>
<contactref element="RN4" pad="1"/>
<contactref element="RN3" pad="1"/>
<contactref element="RN2" pad="1"/>
</signal>
<signal name="CLK">
<contactref element="J1" pad="5"/>
<contactref element="IC1" pad="27"/>
<contactref element="D35" pad="C"/>
<contactref element="RN3" pad="5"/>
</signal>
<signal name="CMD">
<contactref element="J1" pad="2"/>
<contactref element="IC1" pad="28"/>
<contactref element="D34" pad="C"/>
<contactref element="RN3" pad="4"/>
</signal>
<signal name="DAT3">
<contactref element="J1" pad="1"/>
<contactref element="IC1" pad="26"/>
<contactref element="D33" pad="C"/>
<contactref element="RN3" pad="3"/>
</signal>
<signal name="DAT2">
<contactref element="J1" pad="9"/>
<contactref element="IC1" pad="25"/>
<contactref element="D32" pad="C"/>
<contactref element="RN3" pad="2"/>
</signal>
<signal name="DAT0">
<contactref element="J1" pad="7"/>
<contactref element="IC1" pad="23"/>
<contactref element="D36" pad="C"/>
<contactref element="RN3" pad="6"/>
</signal>
<signal name="DAT1">
<contactref element="J1" pad="8"/>
<contactref element="IC1" pad="24"/>
<contactref element="D37" pad="C"/>
<contactref element="RN3" pad="7"/>
</signal>
<signal name="!WE">
<contactref element="D17" pad="C"/>
<contactref element="IC1" pad="13"/>
</signal>
<signal name="VSS">
<contactref element="J1" pad="3"/>
<contactref element="J1" pad="6"/>
<contactref element="R2" pad="1"/>
</signal>
<signal name="N$1">
<contactref element="IC1" pad="10"/>
<contactref element="X1" pad="1"/>
</signal>
<signal name="N$2">
<contactref element="X1" pad="2"/>
<contactref element="IC1" pad="9"/>
</signal>
<signal name="VDD">
<contactref element="D1" pad="C"/>
<contactref element="J1" pad="4"/>
<contactref element="R1" pad="1"/>
<contactref element="C1" pad="1"/>
</signal>
<signal name="WE">
<contactref element="A5" pad="W"/>
<contactref element="A6" pad="W"/>
<contactref element="D17" pad="A"/>
<contactref element="R9" pad="2"/>
<contactref element="D31" pad="A"/>
</signal>
<signal name="DATA1+">
<contactref element="B2" pad="DD"/>
<contactref element="B3" pad="DD"/>
<contactref element="D14" pad="A"/>
<contactref element="R7" pad="1"/>
</signal>
<signal name="DATA1-">
<contactref element="B2" pad="EE"/>
<contactref element="B3" pad="EE"/>
<contactref element="D15" pad="A"/>
</signal>
<signal name="!SELECT">
<contactref element="A2" pad="L"/>
<contactref element="A3" pad="L"/>
</signal>
<signal name="SKEW">
<contactref element="A2" pad="F"/>
<contactref element="A3" pad="F"/>
</signal>
<signal name="SHIELD1">
<contactref element="A2" pad="V"/>
<contactref element="A2" pad="JJ"/>
<contactref element="A3" pad="V"/>
<contactref element="A3" pad="JJ"/>
</signal>
<signal name="SHIELD2">
<contactref element="B2" pad="L"/>
<contactref element="A2" pad="NN"/>
<contactref element="B2" pad="Y"/>
<contactref element="A3" pad="NN"/>
<contactref element="B3" pad="Y"/>
<contactref element="B3" pad="L"/>
</signal>
<signal name="TIMING+">
<contactref element="A2" pad="K"/>
<contactref element="A3" pad="K"/>
<contactref element="D2" pad="A"/>
<contactref element="R3" pad="1"/>
</signal>
<signal name="TIMINGCT">
<contactref element="A2" pad="M"/>
<contactref element="A3" pad="M"/>
<contactref element="IC2" pad="4"/>
<contactref element="D4" pad="C"/>
</signal>
<signal name="TIMING-">
<contactref element="A2" pad="R"/>
<contactref element="A3" pad="R"/>
<contactref element="D3" pad="A"/>
</signal>
<signal name="DATA3CT">
<contactref element="A2" pad="UU"/>
<contactref element="A3" pad="UU"/>
<contactref element="D10" pad="C"/>
<contactref element="IC3" pad="4"/>
</signal>
<signal name="DATA3-">
<contactref element="A2" pad="TT"/>
<contactref element="A3" pad="TT"/>
<contactref element="D9" pad="A"/>
</signal>
<signal name="MARK+">
<contactref element="A2" pad="EE"/>
<contactref element="A3" pad="EE"/>
<contactref element="D5" pad="A"/>
<contactref element="R4" pad="1"/>
</signal>
<signal name="MARKCT">
<contactref element="A2" pad="PP"/>
<contactref element="A3" pad="PP"/>
<contactref element="D7" pad="C"/>
<contactref element="IC2" pad="6"/>
</signal>
<signal name="MARK-">
<contactref element="A2" pad="DD"/>
<contactref element="A3" pad="DD"/>
<contactref element="D6" pad="A"/>
</signal>
<signal name="DATA3+">
<contactref element="B2" pad="F"/>
<contactref element="B3" pad="F"/>
<contactref element="D8" pad="A"/>
<contactref element="R5" pad="1"/>
</signal>
<signal name="DATA2CT">
<contactref element="B2" pad="K"/>
<contactref element="B3" pad="K"/>
<contactref element="D13" pad="C"/>
<contactref element="IC3" pad="6"/>
</signal>
<signal name="DATA2+">
<contactref element="B2" pad="M"/>
<contactref element="B3" pad="M"/>
<contactref element="D11" pad="A"/>
<contactref element="R6" pad="1"/>
</signal>
<signal name="DATA2-">
<contactref element="B2" pad="R"/>
<contactref element="B3" pad="R"/>
<contactref element="D12" pad="A"/>
</signal>
<signal name="DATA1CT">
<contactref element="B2" pad="Z"/>
<contactref element="B3" pad="Z"/>
<contactref element="D16" pad="C"/>
<contactref element="IC3" pad="8"/>
</signal>
<signal name="!FORWARD">
<contactref element="A5" pad="K"/>
<contactref element="A6" pad="K"/>
<contactref element="D27" pad="A"/>
<contactref element="D46" pad="A"/>
</signal>
<signal name="!GO">
<contactref element="A5" pad="F"/>
<contactref element="A6" pad="F"/>
</signal>
<signal name="!REVERSE">
<contactref element="A5" pad="L"/>
<contactref element="A6" pad="L"/>
<contactref element="D28" pad="A"/>
<contactref element="D47" pad="A"/>
</signal>
<signal name="!STOP">
<contactref element="A5" pad="E"/>
<contactref element="A6" pad="E"/>
<contactref element="D29" pad="A"/>
<contactref element="D48" pad="A"/>
</signal>
<signal name="!HALT">
<contactref element="A5" pad="R"/>
<contactref element="A6" pad="R"/>
<contactref element="D30" pad="A"/>
<contactref element="D49" pad="A"/>
</signal>
<signal name="!SELECT6">
<contactref element="A5" pad="UU"/>
<contactref element="D24" pad="A"/>
<contactref element="A6" pad="UU"/>
<contactref element="D44" pad="A"/>
</signal>
<signal name="!SELECT0">
<contactref element="A5" pad="Z"/>
<contactref element="D18" pad="A"/>
<contactref element="A6" pad="Z"/>
<contactref element="D38" pad="A"/>
</signal>
<signal name="!SELECT2">
<contactref element="A5" pad="DD"/>
<contactref element="D20" pad="A"/>
<contactref element="A6" pad="DD"/>
<contactref element="D40" pad="A"/>
</signal>
<signal name="!SELECT4">
<contactref element="A5" pad="JJ"/>
<contactref element="D22" pad="A"/>
<contactref element="A6" pad="JJ"/>
<contactref element="D42" pad="A"/>
</signal>
<signal name="!SELECT7">
<contactref element="A5" pad="TT"/>
<contactref element="D25" pad="A"/>
<contactref element="A6" pad="TT"/>
<contactref element="D45" pad="A"/>
</signal>
<signal name="!SELECT5">
<contactref element="A5" pad="NN"/>
<contactref element="D23" pad="A"/>
<contactref element="A6" pad="NN"/>
<contactref element="D43" pad="A"/>
</signal>
<signal name="!SELECT1">
<contactref element="A5" pad="EE"/>
<contactref element="D19" pad="A"/>
<contactref element="A6" pad="EE"/>
<contactref element="D39" pad="A"/>
</signal>
<signal name="!SELECT3">
<contactref element="A5" pad="PP"/>
<contactref element="D21" pad="A"/>
<contactref element="A6" pad="PP"/>
<contactref element="D41" pad="A"/>
</signal>
<signal name="J">
<contactref element="A5" pad="M"/>
<contactref element="A6" pad="M"/>
</signal>
<signal name="SELECT">
<contactref element="A5" pad="V"/>
<contactref element="A6" pad="V"/>
<contactref element="R10" pad="2"/>
</signal>
<signal name="V+">
<contactref element="IC3" pad="3"/>
<contactref element="R8" pad="2"/>
<contactref element="IC2" pad="3"/>
<contactref element="C8" pad="1"/>
<contactref element="C9" pad="1"/>
</signal>
<signal name="N$7">
<contactref element="D2" pad="C"/>
<contactref element="IC2" pad="5"/>
<contactref element="D3" pad="C"/>
<contactref element="D4" pad="A"/>
</signal>
<signal name="N$11">
<contactref element="D5" pad="C"/>
<contactref element="D6" pad="C"/>
<contactref element="D7" pad="A"/>
<contactref element="IC2" pad="7"/>
</signal>
<signal name="N$12">
<contactref element="D8" pad="C"/>
<contactref element="D9" pad="C"/>
<contactref element="D10" pad="A"/>
<contactref element="IC3" pad="5"/>
</signal>
<signal name="N$13">
<contactref element="D11" pad="C"/>
<contactref element="D12" pad="C"/>
<contactref element="D13" pad="A"/>
<contactref element="IC3" pad="7"/>
</signal>
<signal name="N$14">
<contactref element="D14" pad="C"/>
<contactref element="D15" pad="C"/>
<contactref element="D16" pad="A"/>
<contactref element="IC3" pad="9"/>
</signal>
<signal name="TOUT">
<contactref element="R3" pad="2"/>
<contactref element="IC1" pad="18"/>
</signal>
<signal name="D3OUT">
<contactref element="R5" pad="2"/>
<contactref element="IC1" pad="14"/>
</signal>
<signal name="D2OUT">
<contactref element="R6" pad="2"/>
<contactref element="IC1" pad="15"/>
</signal>
<signal name="D1OUT">
<contactref element="R7" pad="2"/>
<contactref element="IC1" pad="16"/>
</signal>
<signal name="TIN">
<contactref element="IC2" pad="2"/>
<contactref element="IC1" pad="6"/>
<contactref element="RN3" pad="8"/>
</signal>
<signal name="MIN">
<contactref element="IC2" pad="1"/>
<contactref element="IC5" pad="11"/>
<contactref element="RN2" pad="6"/>
</signal>
<signal name="D3IN">
<contactref element="IC3" pad="2"/>
<contactref element="IC6" pad="5"/>
<contactref element="RN2" pad="7"/>
</signal>
<signal name="D2IN">
<contactref element="IC3" pad="1"/>
<contactref element="IC6" pad="11"/>
<contactref element="RN2" pad="8"/>
</signal>
<signal name="D1IN">
<contactref element="IC3" pad="14"/>
<contactref element="IC5" pad="5"/>
<contactref element="RN2" pad="9"/>
</signal>
<signal name="MOUT">
<contactref element="IC1" pad="17"/>
<contactref element="R4" pad="2"/>
</signal>
<signal name="DRV2">
<contactref element="IC4" pad="9"/>
<contactref element="IC6" pad="4"/>
</signal>
<signal name="DRV0">
<contactref element="IC4" pad="6"/>
<contactref element="IC5" pad="4"/>
</signal>
<signal name="DRV1">
<contactref element="IC4" pad="7"/>
<contactref element="IC6" pad="12"/>
</signal>
<signal name="N$3">
<contactref element="D18" pad="C"/>
<contactref element="IC4" pad="10"/>
<contactref element="RN4" pad="2"/>
</signal>
<signal name="N$4">
<contactref element="D19" pad="C"/>
<contactref element="IC4" pad="11"/>
<contactref element="RN4" pad="3"/>
</signal>
<signal name="N$5">
<contactref element="D20" pad="C"/>
<contactref element="IC4" pad="12"/>
<contactref element="RN4" pad="4"/>
</signal>
<signal name="N$8">
<contactref element="D21" pad="C"/>
<contactref element="IC4" pad="13"/>
<contactref element="RN4" pad="5"/>
</signal>
<signal name="N$9">
<contactref element="D22" pad="C"/>
<contactref element="IC4" pad="1"/>
<contactref element="RN4" pad="9"/>
</signal>
<signal name="N$10">
<contactref element="IC4" pad="2"/>
<contactref element="D23" pad="C"/>
<contactref element="RN4" pad="8"/>
</signal>
<signal name="N$15">
<contactref element="D24" pad="C"/>
<contactref element="IC4" pad="3"/>
<contactref element="RN4" pad="7"/>
</signal>
<signal name="N$16">
<contactref element="IC4" pad="4"/>
<contactref element="D25" pad="C"/>
<contactref element="RN4" pad="6"/>
</signal>
<signal name="DRVOK">
<contactref element="D26" pad="C"/>
<contactref element="IC1" pad="19"/>
</signal>
<signal name="HALT">
<contactref element="D30" pad="C"/>
<contactref element="IC5" pad="10"/>
<contactref element="RN2" pad="5"/>
</signal>
<signal name="D1">
<contactref element="IC1" pad="4"/>
<contactref element="IC5" pad="7"/>
</signal>
<signal name="D3">
<contactref element="IC1" pad="2"/>
<contactref element="IC6" pad="7"/>
</signal>
<signal name="D2">
<contactref element="IC1" pad="3"/>
<contactref element="IC6" pad="9"/>
</signal>
<signal name="D0">
<contactref element="IC1" pad="5"/>
<contactref element="IC5" pad="9"/>
</signal>
<signal name="B">
<contactref element="IC1" pad="12"/>
<contactref element="IC6" pad="2"/>
<contactref element="IC5" pad="2"/>
</signal>
<signal name="A">
<contactref element="IC1" pad="11"/>
<contactref element="IC6" pad="14"/>
<contactref element="IC5" pad="14"/>
</signal>
<signal name="STOP">
<contactref element="D29" pad="C"/>
<contactref element="IC5" pad="6"/>
<contactref element="RN2" pad="4"/>
</signal>
<signal name="REVERSE">
<contactref element="D28" pad="C"/>
<contactref element="IC6" pad="10"/>
<contactref element="RN2" pad="3"/>
</signal>
<signal name="FORWARD">
<contactref element="D27" pad="C"/>
<contactref element="IC6" pad="6"/>
<contactref element="RN2" pad="2"/>
</signal>
<signal name="N$17">
<contactref element="IC1" pad="1"/>
<contactref element="R12" pad="2"/>
</signal>
<signal name="N$18">
<contactref element="R10" pad="1"/>
<contactref element="Q1" pad="3"/>
</signal>
<signal name="N$19">
<contactref element="D26" pad="A"/>
<contactref element="R11" pad="2"/>
<contactref element="Q1" pad="2"/>
</signal>
<signal name="-12V">
<contactref element="R11" pad="1"/>
<contactref element="R9" pad="1"/>
<contactref element="C3" pad="-"/>
<contactref element="-12V" pad="1"/>
</signal>
<signal name="!CD">
<contactref element="J1" pad="10"/>
<contactref element="IC5" pad="12"/>
<contactref element="RN3" pad="9"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
