Intermec PENKEY 6100 Programmer's Reference Manual page 221

SECTION 6
INT 15h, Function AH = 87h: Move Block
BIOS
On Entry:
On Return:
INT 15h, Function AH = 88h: Read Extended Memory Size
BIOS
On Entry:
On Return:
INT 15h, Function AH = 89h: Switch to Protected Mode
BIOS
On Entry:
On Return:
R
PEN*KEY 6100 Computer Programmer's Reference Guide
Conversions and Interfaces
6-85