PORTIBM PC Portable (uses same BIOS as XT) 0075 - Intel 82378IB ("Saturn"/"Neptune" chipsets) - MBOARD CONFIGURATION
SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0073h,PORTIBM PC Portable (uses same BIOS as XT) 0078h"82378IB"

0075  R-  ???
	  bits 3-2: external bus speed
	       00  50 MHz
	       01  66 MHz
	       10  60 MHz
	       11  40 MHz