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error 65: access violation : no 'execute/read' permission

hello,

i am using the following code to generate a delay of 200ms.

while(tfcount <= 16666)
{
	if (TF1 == 1)
	{
		tfcount++;
		TF1 = 0;
	}
}

im using the Timer 1 as a baud rate generator and it overflows every 12 us. the problem is that when i simulate the code using microvision 3 ,as soon as the while condition becomes false, instaed of continuing down the code, it gives the following error :

*** error 65: access violation at C:0x000B : no 'execute/read' permission

can u please help and tell me how to avoid this.

thanks
saad

Parents

0 Sarang Patki over 20 years ago in reply to HansBernhard Broeker
Check if you have enabled the interrupt for timer 1 and still polling it.
Means this will be written in your code

. . ET1 = 1; . . EA = 1; . .
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0 Sarang Patki over 20 years ago in reply to HansBernhard Broeker
Check if you have enabled the interrupt for timer 1 and still polling it.
Means this will be written in your code

. . ET1 = 1; . . EA = 1; . .
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0 Sarang Patki over 20 years ago in reply to Sarang Patki

*** error 65: access violation at C:0x000B : no 'execute/read' permission

Sorry...

if it is 0X000B, then it is interrupt vector of timer 0.
So check for ET0 = 1; in your code.And if you are making TR0 = 1; instead of TR1 = 1;
Better is disable EA (EA = 0;) if you are not using interrupts.
EX0 - 0X0003;
ET0 = 0X000B;
EX1 = 0X0013;
ET1 = 0X001B;
ES = 0X0023;
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0 Saad ikram over 20 years ago in reply to Sarang Patki

yup... it was the interrupt problem..

:) thnaks a lot
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