Subject:
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Enable interrupts within IC?
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 6 Feb 1996 02:40:19 GMT
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Original-From:
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Mike Ross <MROSS@L14H42.JSC.saynotospamNASA.GOV>
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Viewed:
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1672 times
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Hi all,
I'm trying to use IC to poke in an interrupt routine (the IC3 interrupt
from pin PA0) assembled using PCBUG11 at $B600. I can set all the
register bits correctly, but I can't execute the CLI (general interrupt
enable) HC11 opcode from within IC. I know regular C code can execute
assembler instructions, but is that feature also in IC? Or perhaps there's
some sneaky way to access the Condition Code Register, which isn't mapped
into memory, but that's all the CLI assembler instruction does to enable
general interrupts.
Also, what is the best 68HC11E processor usable by the Handyboard? The
E9 has scads of memory, but that may exceed the handyboard layout. I
need to upgrade from the A1 because I need 4 input capture lines, while
the A1 only has 3. The E's can configure OC5 to be IC4.
Thanks for the info.
-mike
* Michael L. Ross/C33 | Lockheed Engineering & Sciences Co.****
* Robotics Department | 2400 Nasa Rd. 1, Houston, TX 77058*****
*(713)333-7094 voice,(713)333-6071 fax*#include <disclaimer.h>*
* Finger me for my public key. mross@outland.jsc.nasa.gov ****
* If you weren't a socialist in your twenties, you had no heart.
* If you weren't a conservative by your thirties, you have no brain.
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