Intermec PENKEY 6100 Programmer's Reference Manual page 195

SECTION 6
INT 10h, Function AX = 7F30h: Disable Shadow Buffer Updates
VROTATE
On Entry:
On Return:
INT 10h, Function AX = 7F32h: Disable Rotated Video
VROTATE
On Entry:
On Return:
INT 10h, Function AX = 7F33h: Enable Rotated Video
VROTATE
On Entry:
On Return:
Disk Services: Interrupt 13h
INT 13h, Function AH = 00h: Reset Disk System
BIOS
On Entry:
On Return:
R
PEN*KEY 6100 Computer Programmer's Reference Guide
Conversions and Interfaces
6-59