A8 Initialization before E000 ROM control over. E000 ROM to get control
next.
A9 Returned from E000 ROM control. Going to do any initialization required
after E000 optional ROM control.
AA Initialization after E000 optional ROM control is over. Going to display
the system configuration.
00 System configuration is displayed. Going to give control to INT 19h boot
80
ICOP Embedded 386SX CPU ISA Half Size SBC User's Manual