Interrupt OPTION

SamTheMan

I'm using "INTERRUPT 1000" so the SX will perform a task every 1ms and compiler sets the·OPTION for me
Now I need to disable the INTERRUPT·to initialize·other devices then I want to re-enable·the interrupt·again

I used this commands to disable the interrupt

·· temp=option
···temp=temp ^ %01000000
···option=temp
'
'
'

and I used this to re-enable it:

·· temp=option
·· temp=temp & %10111111
·· option=temp

when I use this commands set after the "Start:" label and before "Main:" label, the SX, hangs and does not work and I cannot even debug it!!
the debug freeze and never gives me the options to run of walk,.... (even-if I used the break command)



·How can I disable the INTERRUPT then re-enable it?


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Bean

The "temp = option" is not valid because the OPTION register is write only.

Okay there IS a secret instruction that will read the option registers.
Try replacing "temp = option" like this:

\ DW $001 ' Put OPTION register into W "secret instruction"
\ MOV temp,W
temp=temp ^ %01000000
option=temp


\ DW $001 ' Put OPTION register into W "secret instruction"
\ MOV temp,W
temp=temp & %10111111
option=temp


I don't know if this will work, but in theory it should.

Bean.

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“The United States is a nation of laws -· poorly written and randomly enforced.” - Frank Zappa

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