mitsubishi - Al Kossow's Bitsavers

MITSUBISHI MICROCOMPUTERSPCA4040MELPS 740 DEDICATED BOARD (MS0740-XXXSP,MS0741-XXXSP)BLOCK DIAGRAMCONNECTOR FOR TARGET SYSTEM CONNECTIONS I J 1..---PORTADDRESSDECODER24~H24 t1 ')PORT INPUTBUFFERI) JPORT LATCHDIRECTION3./ ~PORT OUTPUTBUFFERPORT DATALATCH" "ADDRESS 16LATCH'LXln8 t 8fJI8 12Po P1 P 2 P 3,4CPU M50740-000P~ f----'TIMING 3 1GENERATORCIRCUITt"I \I I --'21, 1 ICl)a:Cl)wwOa:o00ow «0 I--h2r---Z- '-- O...Ja:i=OwOa:133::J1-OZr-- OwO a.a:O12,1.-RESET,INTERRUPT ICONTROL~+ ~DATA BUS ADDRESSBUFFERBUS BUFFERCPUCONTROL ---' BREAK DATA/PROGRAMCIRCUIT CONTROL MEMORYr-- MEMORY ~ADDRESSREAD GATEI\r----...J~a?!::: ~«I-:JwZ nO cooo a:O!:!:IDataJ)CONTROLBUSBUFFER1,-l -,JAddressDATA BUS ADDRESS IBUFFER BUS BUFFER MONITOR ROM(M5L2764K)11 2f)J8" ,8,1-' 12 V 5,3,1..-GENERATORCLOCKCIRCUITICONNECTOR(J2)L..-IICARD EDGE CONNECTOR FOR PC4000 CONNECTION-, J 3• MITSUBISHI.... ELECTRIC7-19