MEM 0040h:0008h - BASE I/O ADDRESS OF FIRST PARALLEL I/O PORTIBM PC Portable (uses same BIOS as XT)
Size:	WORD
Notes:	the BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. POSTsee Power-On Self-Test routine fills in the parallel port address fields in
	  turn as it finds parallel ports.  All fields beyond the last one
	  for which a valid parallel port was found are set to zero.
	the BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. INT 17 handler uses these fields to address the parallel
	  ports
	Under DR-OpenDOS 7.02+ this setting can be changed with the
	  undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.).	 Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated. CONFIG.SYS LPT1=[port_address|logical_no][,[timeout]]
	  directive, whereby port_address = 200h..3FCh, logical_no = 0 or 1..3,
	  timeout=0..255 (default 20).
SeeAlso: MEM 0040h:0000h,MEM 0040h:000Ah,MEM 0040h:000Ch,INT 17/AH=00h
SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0278h"PRINTER",PORTIBM PC Portable (uses same BIOS as XT) 03BCh"PRINTER"