Labels:text | diagram | parallel | line | screenshot | black and white | plot | technical drawing | number | receipt OCR: SCSI DMA Control - B.23 T LL m_ 00COMO M S M T T e 0 a 3 0 S S T T Location(s ) Size Type Meaning 0x00FF8606 WORD DMA Status (on read) as follows: Bit z Bit V Data Request Inactive Block Count Zero ERROR DMA Mode Control (on write) as follows: Destination Select (_DRO) 0 - Floppy, 1 - ACSI Select Block Count Registe Bit 3 Bit 0 Destination Select (_Cs) 0 - Floppy, 1 - ACSI AZ Al 0x00FF8808 OB DMA Pointer High 0x00FF860.A OB DMA Pointer Mid Ox00F F880C OB DMA Pointer Low OXOOF F880E - N/A Unassigned 0x00FF86FF SCSI DMA Control 0x00FF8700 OB SCSI DMA Pointer Upper 0x00FF8702 OB SCSI DMA Pointer Upper-Middle 0x00FF8704 OB SCSI DMA Pointer Lower- Middle 0x00FF8706 OB VO SCSI DMA Pointer Lower 0x00FF8708 OB Byte Count Upper 0x00FF870.A OB Byte Count Upper-Middle OXOOFF870C Byte Count Lower- Middle OxOOFF870E OB VO Byte Count Lower 0x00F F87 10 WORD SCSI DMA Data Residue Register High 0x00FF87 12 WORD SCSI DMA Data Residue Register Low
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