Category: non-traditional input devices
Flags: Undocumented function
INT 21 - PenDOS PENDEV.SYS - ??? AX = 4403h BX = file handle for device "$$PENDOS" or "$$PD_REG" CX = size of buffer DS:DX -> buffer containing ??? Return: CF clear if successful buffer filled CF set on error AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h) Program: A limited version of PenDOS by Communication Intelligence Corporation, which provides pen capability to keyboard-based programs, is bundled with IBM DOS 6.1 Note: this call sets the WORD at offset 1Ah into the device driver request header used to call the driver to 0000h. SeeAlso: AX=4402h"PENDEV.SYS"