Intermec PENKEY 6100 Programmer's Reference Manual page 148

Conversions and Interfaces
Power Device IDs
ID (Hex)
APM Function Summary
INT DOS APM Interrupts (INT 15h)
R
6-12 PEN*KEY 6100 Computer Programmer's Reference Guide
Value in Register BX Power Device ID (General Definitions)
Description
Table 6 1
APM Interrupt Summary
SECTION 6
Function Requires
AL= Connection