Interrupt 2Fh Function 1A00h Get ANSI.SYS Installed State

mov ax, 1A00h ;Get ANSI.SYS Installed State

int 2Fh ;Multiplex Interrupt

cmp al, 0FFh ;0FFh means installed

Get ANSI.SYS Installed State (Interrupt 2Fh Function 1A00h) determines whether the ANSI.SYS device driver has been loaded.

Parameters

This function has no parameters.

Return Value

The AL register contains 0FFh if ANSI.SYS has been loaded or 00h if it has not.