Intermec PENKEY 6100 Programmer's Reference Manual page 154

Conversions and Interfaces
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4000 Series Disk BIOS Services: Interrupt 13h
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4000 Series Port Control BIOS Services: Interrupt 14h
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4000 Series Multitasking BIOS Services: Interrupt 15h
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6-18 PEN*KEY 6100 Computer Programmer's Reference Guide
Display Services
Disk Services
Serial Communications Services
SECTION 6
4000 Series Screen Emulation