🚀 go-pugleaf

I try to write two AES programs communicating via messages, one of them 
being a desk accessory. I have compiled the two programs with different 
C compilers and run them with different ROM versions, but i always obtain
three bombs during the context switch.

/******* The desk accessory ***********/

extern int16 gl_apid;

int16 buffer[8];

main()
{
	int event, menu_acc;
	
	appl_init();
	menu_acc = menu_register (gl_apid, "  My accessory ");
	
	for (;;) {
		event = evnt_mesag (buffer);
		switch (buffer[0]) {
			case AC_OPEN:
				if (buffer[4] == menu_acc)
					form_alert (...);
				break;
			case AC_CLOSE:
				break;
			case default:
				form_alert (1, "[1][Message received][ok]");
/**** I never get this message ****/
				break;
		}
	}
}

/****** The user program *****/

char buf[100];

int16 mess[] = {100, 0};

main()
{
	int sid;
	appl_init();
	sid = appl_find ("ACC     "); /* The name of the accessory */
	
	sprintf (buf, "[1][Id = %d][ok]", sid);
	form_alert (1, buf);	/* I get this message and the good ID */
	
	appl_write (sid, 4, mess);
	form_alert (1, "[1][Message sent][ok]");

	evnt_timer(0,0); /* context switch */
	/** ==> three bombs: the process list has been damaged */
}

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

Is it a bug in the program or a (known?) AES bug?
Is there another mean to send such a message?

More generally, is there a (simple) mean to wake up a task after an interrupt
(for example from the AUX port)?

Thanks in advance for any response.

Jean-Paul Bodeveix
LRI- bat 490
91405 ORSAY FRANCE

email: jpb@lri.lri.fr