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218C

Category: DOS kernel

INT 21 - European MS-DOS 4.0 - SET SIGNAL HANDLER

	AH = 8Ch
	AL = signal number (see #01793)
	BL = action (see #01794)
	DS:DX -> signal handler (see #01795)
Return: CF clear if successful
	    AL = previous action
	    ES:BX -> previous signal handler
	CF set on error
	    AX = error code (01h,invalid SigNumber or Action)
		  (see #01680 at AH=59h/BX=0000h)
Desc:	set the routine which will be invoked on a number of exceptional
	  conditions
Note:	all signals will be sent to the most recently installed handler
SeeAlso: AH=8Dh


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  Copyright 2000   by Ralf Brown     Updated Jul 2000