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MC68HC11 Assembly Notes

Posted On: January 18th, 2006 at 12:21 am

When programming on the Motorola 68HC11 processor, keep in mind that the following command does not work:

ADDD ADR1

The ADDD op code wants 16 bits but ADR1 gives only 8.

It took Ryan and I about an hour to figure out that this was preventing our Operating System from performing A/D conversions correctly.

Edited on: January 18th, 2006 12:23 am

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