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DM1883A

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Abstract: C WESTERN DIGITAL O R P O R A T I O N DM1883A/B DM1883A/B Direct Memory Access Controller , DESCRIPTIONS PIN NUMBER 1 2 3 4 DM1883A/B SIGNAL NAME GROUND DATA REQUEST REPLY B A C K IN SYMBOL , is h ig h a nd co m p le m e n te d if T D B is low . DM1883A/B 20 IA C K IN IA C K I , ASTER RESET to a llo w a 64K tra n s fe r c o u n t d u rin g a u to load. DM1883A/B REGISTER , b it 16. N o t used. DM1883A/B N O T E : B its 1. 2, 3 set IN T R lo w on an a c tiv e c o n d -
OCR Scan
DM1883A/B
Abstract: WESTERN DIGITAL CORPORATION DM1883A/B Direct Memory Access Controller FEATURES â'¢ AUTOMATIC DAISY CHAINING OF BUS AND INTERRUPT ACKNOWLEDGE SIGNALS AUTO LOAD OPTION SINGLE +5 VDC POWER SUPPLY 8 BIT BI-DIRECTIONAL DATA BUS TRUE OR COMPLEMENT DATA BUS 8 CPU ADDRESSABLE DMAC REGISTERS 8 CPU ADDRESSABLE DEVICE REGISTERS AUTOMATIC GENERATION OF DEVICE CS DURING DMA AND CPU DEVICE ACCESSES 256K MEMORY ADDRESSING 64K PROGRAMMABLE PAGE PROTECTION BYTE OR WORD DMA TRANSFERS INTERRUPT AND BUS REQUEST CAPABILITIES END-OF-BLOCK -
OCR Scan
DM1883 8097 interrupt 1771 floppy fdc1771 179X 8212 latch
Abstract: Floppy Support DM1883A/B Direct Memory Access , -02 . 73 DM1883A/B . 145 WD2010 . 263 WD2143 -
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MSC 1691 AI WD1771 WD1793 WD1691V western digital FD1791 FD1770 CA92714 1015S