Intel iapx 432 manual Interprxess exM-UNICATICN and Dispaiching Example

INTERPRXESS exM-UNICATICN AND DISPA'ICHING EXAMPLE

Get-print_message:

Procedure:

/**********************************************************************************/

/* Attempt to Receive a message fran the Print Request Port, Figure F-2*/

/**********************************************************************************/

W~ndow_4.frf-prcs_idx	= process_l;	/* Use process obj ect 1.	*/
Wl.rrlow_4. frf_operand (0)	= requestJ'Ort_obj_sel:	/* port	*/
Window_4.frf_operator	= Ol4H:	/* Receive function code.	*/

Call Await_function_oampletion;

If oqinnow 4.frf function state and 0020H) <> 0 Then

Do - --

/******************************************************************************/

/*	Receive instruction blocked, 00 outstaming	print requests	*/
/*	Busy wait until a GOP process sends a print	request to the print	*/

/* request port. See Figure F-3 for the SEND unblocking the blocked RECEIVE */

/* Such an event will trigger an interrupt in the AP					*/
/*	(which we have disabled) am set windCM 4.disp state true				*/
/*	indicating	the	nature of the interrupt.-	-	*/
/* See Figure		F-4	for details on the wakeup IPC and subsequent interrupt.		*/

/******************************************************************************/

/******************************************************************************/

/* At this point WindcM 4.selected index contalns the index of the	*/
/* process object which-was dispatched. Since we are using only process	*/
/* object one selected index will equal one. Window 4.selected state	*/
/* contains software defined info~tion concerning~he action~taken,	*/
/* if any, by software in cx::mpleting this instruction.	*/

/******************************************************************************/

Call Dispatch: /* Hang IP processor carrier on dispatching port. */

Em:

Em;

Em

Get-print_message:

Close_windcM:

F-"1