In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Zoot wrote:

When using SX/B, and mixing SX/B and ASM, I want to setup my code so that the rate of the ISR is dependent on the freq setting. I don't want to use a lot of '{$IFDEF}s -- is this info aliased or set up as a constant by SX/B?

The help file says that computed constants can not be used for ISR rates? I want to able to just change the freq. directive and have the change cascade throughout the code without adjusting other constants by hand.

I.E., I would like to do something like:

DEVICE OSCHS2
FREQ 20_000_000

and then later on in the program use something like

IsrRate CON __freq / 4
INTERRUPT IsrRate

and

val1 = __freq * val2

and

val1 = val2 / IsrRate

etc.

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