Intel 80C188XL Direct Memory Access Unit, Example 10-1.Initializing the DMA Unit Continued

				DIRECT MEMORY ACCESS UNIT
SECTORS	MOV	AX, 512		; THE DISK READS IN 512 BYTE
	MOV	DX, D1TC		; XFER COUNT REG
	OUT	DX, AX
; NOW WE NEED		TO SET THE PARAMETERS FOR THE CHANNEL AS FOLLOWS:
;
;	DESTINATION		SOURCE
;	-----------		------
;	MEMORY SPACE		I/O SPACE
;	INCREMENT PTR		CONSTANT PTR
;
; TERMINATE ON TC, INTERRUPT, SOURCE SYNC, HIGH PRIORITY RELATIVE TO
; CHANNEL 0, BYTE XFERS, USE DRQ PIN FOR REQUEST SOURCE. ARM CHANNEL.
	MOV	AX, 1010001101100110B
	MOV	DX, D0CON
	OUT	DX, AX
; REQUESTS ON		DRQ1 WILL NOW RESULT IN TRANSFERS
CODE_SEG	ENDS
DATA_SEG	SEGMENT
SOURCE_DATA_1DB '80C186EC INTEGRATED PROCESSOR'
DEST_DATA_1DB		30 DUP('MITCH')		; JUNK DATA FOR TEST
DISK_BUFF	DB	512 DUP(?)
DATA_SEG	ENDS
	END START

Example 10-1. Initializing the DMA Unit (Continued)

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