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EnigmA Amiga Run 1996 June
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EnigmA AMIGA RUN 08 (1996)(G.R. Edizioni)(IT)[!][issue 1996-06][EARSAN CD VII].iso
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earcd
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hardware
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urt68661.lha
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UART68661
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UART68661.TXT
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1996-04-11
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3KB
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142 lines
Masse = GND = Pin1-4 from Expansion Port
5VOLT = VCC = Pin5+6 from EP
+12V = Pin10 EP
-12V = Pin8 EP
;----------------------------------------
MC68661:UART heisst auch / also known as (MC2661A)(MC2661B(MC2661C)
Entworfen fuer A type!!!!! / Designed for A type!!!!!
Pin1 to EXPANSION PORT Pin79=Datenleitung2/Data-wire
Pin2 to EP Pin81=D3
Pin3 to Pin3,MC1489 (RxD)
Pin4 GND
Pin5 to EP Pin83=D4
Pin6 to EP Pin86=D5
Pin7 to EP Pin84=D6
Pin8 to EP Pin82=D7
Pin9 NC
Pin10 to EP Pin27=A2
Pin11 to Pin19,74HC688 (Chip enable)
Pin12 to EP Pin29=A1
Pin13 to Pin4,7404 (R/W)
Pin14 activates NMI: to EP Pin 22 (INT6)
Pin15 NC
Pin16 to Pin8,MC1489 (DCD)
Pin17 to Pin6,MC1489 (CTS)
Pin18 NC
Pin19 to Pin2,MC1488 (TxD)
Pin20 to CristalOscillator Pin3
Pin21 to Pin2,7404 (RESET)
Pin22 to Pin11,MC1489 (DSR)
Pin23 to Pins4+5,MC1488 (RTS)
Pin24 to Pins9+10,MC1488 (DTR)
Pin25 NC
Pin26 5VOLT
Pin27 to EP Pin75=D0
Pin28 to EP Pin77=D1
;---------------------------------
TTL OSCILLATOR: 4,915200 MHZ
viereckiges Teil mit vier Beinchen / gadget with four Pins
Das Bein an der Nase oder dem Punkt ist Pin1 / Pin1 is near to the dot-mark or small edge
Pin1 NC
Pin2 GND
Pin3 Output to Pin20,MC68661
Pin4 5VOLT
;---------------------------------
ADRESSDECODER 74HC688
HIGH,HIGH,HIGH,LOW,HIGH,HIGH,HIGH,LOW codiert $eexxxx
Pin1 to EP Pin74=AS (AdressStrobe)
Pin2 HIGH (5Volt)
Pin3 to EP Pin59=A23
Pin4 HIGH
Pin5 to EP Pin57=A22
Pin6 HIGH
Pin7 to EP Pin58=A21
Pin8 LOW (GND)
Pin9 to EP Pin56=A20
Pin10 GND
Pin11 HIGH
Pin12 to EP Pin54=A19
Pin13 HIGH
Pin14 to EP Pin52=A18
Pin15 HIGH
Pin16 to EP Pin47=A17
Pin17 LOW
Pin18 to EP Pin45=A16
Pin19 Output to Pin11,MC68661
Pin20 5Volt
;-------------------------------------
7404 TTL-Inverter
Pin7 GND
Pin14 5VOLT
Pin1 to EP Pin53 (Reset)
Pin2 to Pin21,MC68661
Pin3 to EP Pin68 (Read/Write)
Pin4 to Pin13,MC68661
;---------------------------------------
PEGELWANDLER / level-converter und / and 25 Pin Sub-D-Buchse / Sub-D-Connector
MC1488: wandelt 3 Signale (TxD,RTS,DTR) von TTL-Pegel in V24 Pegel(12/-12) /
MC1488: converts three signals (TxD, RTS, DTR) from TTL-levels to V24-levels
pin14= +12V!! to Pin10 from ExpPort
Pin1 = -12V!! to Pin8 EP
Pin7 = GND
SubD Pins1+7 to GND
Pin2 to Pin 19,UART (TxD)
Pin3 to SubD Pin2
Pins4+5 zusammenloeten / connect together und an / and to Pin23,UART(RTS)
Pin6 to SubD Pin4
Pins9+10 zusammenloeten / connect together und an / and to Pin24,UART(DTR)
Pin8 to SubD Pin20
;-----------
MC1489: wandelt 4 Signale (RxD,CTS,DSR,DCD) von V24 in TTL /
MC1489: converts four signals (RxD, CTS, DSR, DCD) from V24 into TTL-levels
Pin14=5V
Pin7 =GND
Pin1 to SubD Pin3(RxD)
Pin3 to pin3,UART(RxD)
Pin4 to SubD Pin5(CTS)
Pin6 to pin17,UART(CTS)
Pin10 to Pin 6,SubD(DSR)
Pin8 to pin16,UART(DCD)!!!! DCD und DSR sind vertauscht! / DCD and DSR are swapped!
Pin13 to SubD Pin8(DCD)
Pin11 to Pin22,UART(DSR) dito.
;-------------------------------------------------------------------
<EOF>