Hi there,

I have recently got a philips 89C60X2 which has 512 bytes of ram, 6/12 clock option and i am using it as a controller and a CLOCL generator for my A/D 7135.
for reading A/D out put i am anding clock with 7135's busy and as busy goes low i subtract 10001 counts from received counts to get my required counts (as per datasheet)

and a clock out pin (programmable)
here i can make pin 1 (P1.0) as my clock out pin
by making
TR2 ( bit of T2CON) =0
C/t (----"--------) =1
T20E(in T2MOD) = 1

and then the pin is outputting a clock pulse as per the value in timer2 capture registers

formula for fout= oscillator freq.
-----------------------
n(65536-RCAP2H,RCAP2L)

Here RCAP2H,RCAP2L makes a 16 bit register of RCAP2

n=2 in 6 clock mode and 4 in 12 clock mode

now i assign highest priority to timer2 for giving me a continous clock (actually clock means continous but still) and when i enable the timer2 interrupt according to this theory it should continously executing timer2 interrupt after it executes the enabling and setting statements in main()

but now the problem is when i simulate it i find it is executing the interrupt for sertain number of itterations and then it goes to main and execute a statement and again come back for some itterations on timer2.

with such a operation i am not able to get continous freq clock well i have not yet tried a hard ware observation only s/w simulation

this will create a definate problem in my A/D reading

can somebody help me about it

regards
sachin