Subject:
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Re: tic2int
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 29 Oct 1997 22:30:47 GMT
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Original-From:
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Max Davies <mdavies@cam./AvoidSpam/org>
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Viewed:
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1646 times
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Anton L Wirsch wrote:
> Hello, I'm new to the world of the HB. I'm trying to get TIC2INT to
> work
> off the digital(8) but its not working. The code I used is below and
> ideas where I went wrong?
>
> #include "include\6811regs.asm"
>
> ORG MAIN_START
>
> variable_oto:
> FDB 00
>
> subroutine_intialize_module:
> #include "include\findx.asm"
>
> ldd TIC2INT,X
> std interrupt_code_exit+1
> ldd #interrupt_code_start
> std TIC2INT,X
>
> ldaa #%00000100
> staa TCTL2,X
> bclr TFLG1,X $fd
> bset TMSK1,X $02
> rts
>
> interrupt_code_start:
> #include "include\findx.asm"
> ldaa variable_oto
> adda #1
> staa variable_oto
> bclr TFLG1,X $fd
>
> interrupt_code_exit:
> jmp $0000
>
> Thanks all
> -Anton
You are indexing off the X register without ever setting it.
To access the TIC2INT interrupt vector I think you first need to do LDX
#$BF00
To access the other things like TCTL2 etc first do LDX #$1000
Good luck,
/Max
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Message is in Reply To:
 | | tic2int
|
| Hello, I'm new to the world of the HB. I'm trying to get TIC2INT to work off the digital(8) but its not working. The code I used is below and ideas where I went wrong? #include "include\6811regs.asm" ORG MAIN_START variable_oto: FDB 00 (...) (27 years ago, 29-Oct-97, to lugnet.robotics.handyboard)
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