MEM A000h:8580h - S3 - MEMORY-MAPPED DMAsee Direct Memory Access REGISTERS
Size:	32 BYTEs
Note:	the S3 graphics processor registers can be mapped at either
	  linear 000A0000h or at offset 16M from the start of the linear
	  frame buffer


Format of S3 memory-mapped DMAsee Direct Memory Access registers:
Offset	Size	Description	(Table M0072)
8580h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	start address in system memory
8584h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	transfer length
8588h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	transfer enable
858Ch	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	???
8590h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	DMAsee Direct Memory Access base address
8594h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	DMAsee Direct Memory Access write pointer
8598h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	DMAsee Direct Memory Access read pointer
859Ch	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	DMAsee Direct Memory Access enable
SeeAlso: #M0057,#M0073