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#int USB & high priority ints

 
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MS
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#int USB & high priority ints
PostPosted: Sat Dec 24, 2005 7:58 am     Reply with quote
Problem on PCH (test on 3.236..41)

Only if i use #int_usb as standard LOW-prior usb irq on a pic18f4550, the c compiler make also a big overhead on the high-irq vector ?!
(without #int_usb i can use timers... and a #int_ext fast with result a simple 08H goto isr_int_ext)

On this time i must use a workarround as "build" CCS prog with "reset+irq" 20H offset's and use #rom statements on 20H,28H,38H with opcodes for correct jumps to main & the "correct" High-IRQ function and the CCS-code for low interrupts...

Is this a bug or a feature ?
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