Intermec PENKEY 6100 Programmer's Reference Manual page 233

SECTION 6
Timer and Real-Time Clock Services: Interrupt
1Ah
INT 1Ah, Function AH = 00h: Read System Timer Ticks
BIOS
On Entry:
On Return:
INT 1Ah, Function AH = 01h: Set System Timer Ticks
BIOS
On Entry:
On Return:
INT 1Ah, Function AH = 02h: Read the Real-Time Clock Time
BIOS
On Entry:
On Return:
R
PEN*KEY 6100 Computer Programmer's Reference Guide
Conversions and Interfaces
6-97