<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.6.0">
<drawing>
<board>
<plain>
<text>G502 Writer</text>
<text>G502 Writer</text>
<text>VRS</text>
<text>VRS</text>
</plain>
<libraries>
<library name="switch">
<packages>
<package name="255SB">
<description>&lt;b&gt;SLIDING SWITCH&lt;/b&gt;&lt;p&gt;
distributor Buerklin, 11G810</description>
</package>
<package name="CK101X12">
<description>&lt;b&gt;ROTARY SWITCH&lt;/b&gt;&lt;p&gt;
C&amp;K</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="C075-032X103">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 7.5 mm, outline 3.2 x 10.3 mm</description>
</package>
<package name="E25-9">
<description>&lt;b&gt;ELECTROLYTIC CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 25.4 mm, diameter 9 mm</description>
</package>
</packages>
</library>
<library name="pot">
<packages>
<package name="SP19L">
<description>&lt;b&gt;POTENTIOMETER&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="dec-con">
<packages>
<package name="DIL14">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
<package name="EDGE-CON4">
<description>Double-Height DEC edge connector</description>
</package>
<package name="DOUBLE-LONG">
</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="DIL14">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
<package name="DIL16">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="CONSTANT_WRITE" library="switch" package="255SB" value=""/>
<element name="WRITE_BUTTON" library="switch" package="255SB" value="MOM"/>
<element name="R4" library="rcl" package="0207/10" value="1K"/>
<element name="E10" library="74xx-us" package="DIL14" value="74LS00N"/>
<element name="E11" library="74xx-us" package="DIL14" value="74LS74N"/>
<element name="R5" library="rcl" package="0207/10" value="56K"/>
<element name="R6" library="rcl" package="0207/10" value="56K"/>
<element name="R7" library="rcl" package="0207/10" value="1K"/>
<element name="E8" library="74xx-us" package="DIL16" value="74LS123N"/>
<element name="R2" library="rcl" package="0207/10" value="5.6k*"/>
<element name="R1" library="pot" package="SP19L" value="10K*"/>
<element name="C13" library="rcl" package="C075-032X103" value="47pf"/>
<element name="C12" library="rcl" package="C075-032X103" value="27pf"/>
<element name="E5" library="74xx-us" package="DIL14" value="74LS74N"/>
<element name="E2" library="74xx-us" package="DIL14" value="74LS74N"/>
<element name="R3" library="rcl" package="0207/10" value="1K"/>
<element name="E7" library="74xx-us" package="DIL14" value="74LS00N"/>
<element name="R12" library="rcl" package="0207/10" value="330"/>
<element name="R13" library="rcl" package="0207/10" value="330"/>
<element name="R14" library="rcl" package="0207/10" value="750"/>
<element name="R15" library="rcl" package="0207/10" value="750"/>
<element name="DC_ERASE" library="switch" package="255SB" value=""/>
<element name="E9" library="dec-con" package="DIL14" value="N8881N"/>
<element name="BIT3" library="switch" package="255SB" value=""/>
<element name="BIT1" library="switch" package="255SB" value=""/>
<element name="BIT2" library="switch" package="255SB" value=""/>
<element name="BIT0" library="switch" package="255SB" value=""/>
<element name="E4" library="74xx-us" package="DIL14" value="74LS20N"/>
<element name="E1" library="74xx-us" package="DIL14" value="74LS10N"/>
<element name="SECTOR_SELECT" library="switch" package="CK101X12" value=""/>
<element name="E3" library="74xx-us" package="DIL16" value="74LS42N"/>
<element name="E6" library="74xx-us" package="DIL14" value="74LS04N"/>
<element name="R8" library="rcl" package="0207/10" value="1K"/>
<element name="R9" library="rcl" package="0207/10" value="1K"/>
<element name="R10" library="rcl" package="0207/10" value="1K"/>
<element name="R11" library="rcl" package="0207/10" value="1K"/>
<element name="C1" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C2" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C3" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C4" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C5" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C6" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C7" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C8" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C9" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C10" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C11" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C14" library="rcl" package="E25-9" value="6.8uf"/>
<element name="C15" library="rcl" package="E25-9" value="6.8uf"/>
<element name="AB04" library="dec-con" package="EDGE-CON4" value=""/>
<element name="U$2" library="dec-con" package="DOUBLE-LONG" value="OUTLINE-DOUBLE-LONG"/>
</elements>
<signals>
<signal name="GND">
<contactref element="WRITE_BUTTON" pad="2"/>
<contactref element="E10" pad="7"/>
<contactref element="E11" pad="7"/>
<contactref element="E8" pad="8"/>
<contactref element="E5" pad="7"/>
<contactref element="E2" pad="7"/>
<contactref element="E8" pad="9"/>
<contactref element="E7" pad="7"/>
<contactref element="R14" pad="1"/>
<contactref element="R15" pad="1"/>
<contactref element="CONSTANT_WRITE" pad="3"/>
<contactref element="DC_ERASE" pad="3"/>
<contactref element="E9" pad="7"/>
<contactref element="BIT3" pad="2"/>
<contactref element="BIT2" pad="2"/>
<contactref element="BIT1" pad="2"/>
<contactref element="BIT0" pad="2"/>
<contactref element="E4" pad="7"/>
<contactref element="E1" pad="7"/>
<contactref element="E3" pad="8"/>
<contactref element="SECTOR_SELECT" pad="11"/>
<contactref element="SECTOR_SELECT" pad="12"/>
<contactref element="E5" pad="2"/>
<contactref element="E5" pad="3"/>
<contactref element="E6" pad="1"/>
<contactref element="E6" pad="7"/>
<contactref element="E9" pad="2"/>
<contactref element="E9" pad="6"/>
<contactref element="E9" pad="5"/>
<contactref element="E9" pad="3"/>
<contactref element="C1" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="C3" pad="2"/>
<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="C10" pad="2"/>
<contactref element="C11" pad="2"/>
<contactref element="C14" pad="-"/>
<contactref element="C15" pad="-"/>
<contactref element="AB04" pad="BT1"/>
<contactref element="AB04" pad="AT1"/>
<contactref element="AB04" pad="BC2"/>
<contactref element="AB04" pad="AC2"/>
</signal>
<signal name="CONSTANT_WRITE">
<contactref element="E11" pad="4"/>
<contactref element="CONSTANT_WRITE" pad="2"/>
<contactref element="AB04" pad="BE1"/>
</signal>
<signal name="VCC">
<contactref element="E10" pad="14"/>
<contactref element="E11" pad="14"/>
<contactref element="R4" pad="2"/>
<contactref element="R5" pad="2"/>
<contactref element="R6" pad="2"/>
<contactref element="R7" pad="2"/>
<contactref element="E8" pad="16"/>
<contactref element="E5" pad="14"/>
<contactref element="E2" pad="14"/>
<contactref element="R3" pad="2"/>
<contactref element="R2" pad="2"/>
<contactref element="E7" pad="14"/>
<contactref element="R12" pad="2"/>
<contactref element="R13" pad="2"/>
<contactref element="E9" pad="14"/>
<contactref element="E4" pad="14"/>
<contactref element="E1" pad="14"/>
<contactref element="E3" pad="16"/>
<contactref element="R8" pad="2"/>
<contactref element="R11" pad="2"/>
<contactref element="R9" pad="2"/>
<contactref element="R10" pad="2"/>
<contactref element="E5" pad="1"/>
<contactref element="E5" pad="4"/>
<contactref element="E6" pad="14"/>
<contactref element="C1" pad="1"/>
<contactref element="C2" pad="1"/>
<contactref element="C3" pad="1"/>
<contactref element="C4" pad="1"/>
<contactref element="C5" pad="1"/>
<contactref element="C6" pad="1"/>
<contactref element="C7" pad="1"/>
<contactref element="C8" pad="1"/>
<contactref element="C9" pad="1"/>
<contactref element="C10" pad="1"/>
<contactref element="C11" pad="1"/>
<contactref element="C14" pad="+"/>
<contactref element="C15" pad="+"/>
<contactref element="R1" pad="A"/>
<contactref element="AB04" pad="BA2"/>
<contactref element="AB04" pad="AA2"/>
</signal>
<signal name="N$3">
<contactref element="E10" pad="13"/>
<contactref element="E11" pad="13"/>
<contactref element="E11" pad="12"/>
<contactref element="E10" pad="8"/>
</signal>
<signal name="N$4">
<contactref element="E10" pad="11"/>
<contactref element="E10" pad="10"/>
</signal>
<signal name="WRITE_H">
<contactref element="WRITE_BUTTON" pad="1"/>
<contactref element="E10" pad="12"/>
<contactref element="R5" pad="1"/>
<contactref element="AB04" pad="BA1"/>
</signal>
<signal name="WRITE_L">
<contactref element="WRITE_BUTTON" pad="3"/>
<contactref element="R6" pad="1"/>
<contactref element="E10" pad="9"/>
<contactref element="AB04" pad="BB1"/>
</signal>
<signal name="N$1">
<contactref element="E11" pad="10"/>
<contactref element="R4" pad="1"/>
<contactref element="E11" pad="2"/>
<contactref element="CONSTANT_WRITE" pad="1"/>
<contactref element="AB04" pad="BV2"/>
</signal>
<signal name="N$8">
<contactref element="E11" pad="3"/>
<contactref element="E11" pad="9"/>
</signal>
<signal name="BUS_INDEX_L">
<contactref element="E11" pad="11"/>
<contactref element="E11" pad="1"/>
<contactref element="AB04" pad="BM1"/>
</signal>
<signal name="DATA_BITS">
<contactref element="R7" pad="1"/>
<contactref element="AB04" pad="BC1"/>
</signal>
<signal name="N$5">
<contactref element="E2" pad="4"/>
<contactref element="R3" pad="1"/>
<contactref element="E2" pad="10"/>
<contactref element="E5" pad="10"/>
</signal>
<signal name="1L">
<contactref element="E5" pad="12"/>
<contactref element="E5" pad="8"/>
<contactref element="E2" pad="11"/>
<contactref element="E7" pad="13"/>
</signal>
<signal name="2L">
<contactref element="E2" pad="12"/>
<contactref element="E2" pad="8"/>
<contactref element="E2" pad="3"/>
<contactref element="E1" pad="2"/>
<contactref element="E1" pad="3"/>
</signal>
<signal name="4L">
<contactref element="E2" pad="2"/>
<contactref element="E2" pad="6"/>
<contactref element="E1" pad="10"/>
<contactref element="E1" pad="4"/>
</signal>
<signal name="N$11">
<contactref element="E8" pad="14"/>
<contactref element="C13" pad="2"/>
</signal>
<signal name="N$12">
<contactref element="E8" pad="6"/>
<contactref element="C12" pad="2"/>
</signal>
<signal name="N$13">
<contactref element="E8" pad="15"/>
<contactref element="C13" pad="1"/>
<contactref element="R1" pad="E"/>
<contactref element="R1" pad="S"/>
</signal>
<signal name="N$14">
<contactref element="E8" pad="7"/>
<contactref element="R2" pad="1"/>
<contactref element="C12" pad="1"/>
</signal>
<signal name="2.88MHZ">
<contactref element="E8" pad="4"/>
<contactref element="E8" pad="10"/>
</signal>
<signal name="1.44MHZ">
<contactref element="E8" pad="12"/>
<contactref element="E5" pad="11"/>
</signal>
<signal name="CLOCK_H">
<contactref element="E8" pad="5"/>
<contactref element="E8" pad="1"/>
<contactref element="E7" pad="10"/>
<contactref element="E7" pad="12"/>
</signal>
<signal name="2H">
<contactref element="E2" pad="9"/>
<contactref element="E4" pad="1"/>
<contactref element="E1" pad="11"/>
</signal>
<signal name="4H">
<contactref element="E2" pad="5"/>
<contactref element="E4" pad="2"/>
<contactref element="E1" pad="1"/>
</signal>
<signal name="+3VB">
<contactref element="R12" pad="1"/>
<contactref element="R14" pad="2"/>
<contactref element="E4" pad="4"/>
</signal>
<signal name="+3VA">
<contactref element="R13" pad="1"/>
<contactref element="R15" pad="2"/>
<contactref element="DC_ERASE" pad="1"/>
<contactref element="E7" pad="2"/>
<contactref element="AB04" pad="BF2"/>
</signal>
<signal name="N$6">
<contactref element="E7" pad="11"/>
<contactref element="E7" pad="4"/>
</signal>
<signal name="N$7">
<contactref element="E7" pad="8"/>
<contactref element="E7" pad="5"/>
</signal>
<signal name="DC_ERASE">
<contactref element="DC_ERASE" pad="2"/>
<contactref element="E9" pad="8"/>
<contactref element="AB04" pad="BP2"/>
</signal>
<signal name="N$2">
<contactref element="E7" pad="6"/>
<contactref element="E9" pad="9"/>
</signal>
<signal name="N$15">
<contactref element="E7" pad="3"/>
<contactref element="E9" pad="12"/>
</signal>
<signal name="WRITE_GATE">
<contactref element="E11" pad="5"/>
<contactref element="E9" pad="11"/>
<contactref element="E8" pad="3"/>
<contactref element="E5" pad="13"/>
<contactref element="E2" pad="13"/>
<contactref element="E2" pad="1"/>
<contactref element="E8" pad="11"/>
<contactref element="E8" pad="2"/>
</signal>
<signal name="BUS_WRITE_GATE_L">
<contactref element="E9" pad="13"/>
<contactref element="AB04" pad="BL2"/>
</signal>
<signal name="N$10">
<contactref element="BIT1" pad="3"/>
<contactref element="E1" pad="9"/>
<contactref element="AB04" pad="AC1"/>
</signal>
<signal name="N$16">
<contactref element="BIT3" pad="3"/>
<contactref element="E4" pad="5"/>
<contactref element="AB04" pad="AA1"/>
</signal>
<signal name="N$17">
<contactref element="BIT2" pad="3"/>
<contactref element="E1" pad="13"/>
<contactref element="AB04" pad="AB1"/>
</signal>
<signal name="N$18">
<contactref element="BIT0" pad="3"/>
<contactref element="E1" pad="5"/>
<contactref element="AB04" pad="AD1"/>
</signal>
<signal name="3BIT">
<contactref element="E4" pad="13"/>
<contactref element="E4" pad="6"/>
</signal>
<signal name="2BIT">
<contactref element="E1" pad="12"/>
<contactref element="E4" pad="12"/>
</signal>
<signal name="1BIT">
<contactref element="E1" pad="8"/>
<contactref element="E4" pad="10"/>
</signal>
<signal name="0BIT">
<contactref element="E1" pad="6"/>
<contactref element="E4" pad="9"/>
</signal>
<signal name="N$9">
<contactref element="E4" pad="8"/>
<contactref element="E7" pad="9"/>
</signal>
<signal name="BUS_DATA&amp;CLOCK_L">
<contactref element="E9" pad="10"/>
<contactref element="AB04" pad="AF2"/>
</signal>
<signal name="N$19">
<contactref element="SECTOR_SELECT" pad="1"/>
<contactref element="E3" pad="1"/>
<contactref element="AB04" pad="AH1"/>
</signal>
<signal name="N$20">
<contactref element="SECTOR_SELECT" pad="2"/>
<contactref element="E3" pad="2"/>
<contactref element="AB04" pad="AJ1"/>
</signal>
<signal name="N$21">
<contactref element="SECTOR_SELECT" pad="3"/>
<contactref element="E3" pad="3"/>
<contactref element="AB04" pad="AK1"/>
</signal>
<signal name="N$22">
<contactref element="SECTOR_SELECT" pad="4"/>
<contactref element="E3" pad="4"/>
<contactref element="AB04" pad="AL1"/>
</signal>
<signal name="N$23">
<contactref element="SECTOR_SELECT" pad="5"/>
<contactref element="E3" pad="5"/>
<contactref element="AB04" pad="AN1"/>
</signal>
<signal name="N$24">
<contactref element="SECTOR_SELECT" pad="6"/>
<contactref element="E3" pad="6"/>
<contactref element="AB04" pad="AP1"/>
</signal>
<signal name="N$25">
<contactref element="SECTOR_SELECT" pad="7"/>
<contactref element="E3" pad="7"/>
<contactref element="AB04" pad="AR1"/>
</signal>
<signal name="N$26">
<contactref element="SECTOR_SELECT" pad="8"/>
<contactref element="E3" pad="9"/>
<contactref element="AB04" pad="AS1"/>
</signal>
<signal name="N$27">
<contactref element="SECTOR_SELECT" pad="9"/>
<contactref element="E3" pad="10"/>
<contactref element="AB04" pad="AU1"/>
</signal>
<signal name="N$28">
<contactref element="SECTOR_SELECT" pad="10"/>
<contactref element="E3" pad="11"/>
<contactref element="AB04" pad="AV1"/>
</signal>
<signal name="N$29">
<contactref element="E6" pad="6"/>
<contactref element="E3" pad="15"/>
</signal>
<signal name="N$30">
<contactref element="E6" pad="12"/>
<contactref element="E3" pad="14"/>
</signal>
<signal name="N$31">
<contactref element="E6" pad="10"/>
<contactref element="E3" pad="13"/>
</signal>
<signal name="N$32">
<contactref element="E6" pad="8"/>
<contactref element="E3" pad="12"/>
</signal>
<signal name="SECTOR_CNTR_0L">
<contactref element="E6" pad="5"/>
<contactref element="R10" pad="1"/>
<contactref element="AB04" pad="BL1"/>
</signal>
<signal name="SECTOR_CNTR_2L">
<contactref element="E6" pad="11"/>
<contactref element="R9" pad="1"/>
<contactref element="AB04" pad="BK2"/>
</signal>
<signal name="SECTOR_CNTR_1L">
<contactref element="E6" pad="13"/>
<contactref element="R11" pad="1"/>
<contactref element="AB04" pad="AP2"/>
</signal>
<signal name="SECTOR_CNTR_3L">
<contactref element="E6" pad="9"/>
<contactref element="R8" pad="1"/>
<contactref element="AB04" pad="BJ1"/>
</signal>
<signal name="SECTOR_SELECT_L">
<contactref element="E7" pad="1"/>
<contactref element="SECTOR_SELECT" pad="A"/>
<contactref element="AB04" pad="BD1"/>
</signal>
<signal name="N$34">
<contactref element="E6" pad="2"/>
<contactref element="E6" pad="3"/>
</signal>
<signal name="N$36">
<contactref element="E10" pad="5"/>
<contactref element="E10" pad="4"/>
<contactref element="E10" pad="2"/>
<contactref element="E10" pad="1"/>
<contactref element="E6" pad="4"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
