Immediate addressing HC12

[Pitrunner]

Hello everybody,

I 've flw problem with CW. I want to load two ASCII signs in accu D. The code looks like LDD #'AA'. But I got an error message illegal addressing mode. If I load only one ASCII sign like LDD #'A', all is perfect. Has somebody an idea? Thank you for the help.

[pittbull]

Hi,
Try this:

// Store 'AB' into D
LDAA #'A'
LDAB #'B'

[Pitrunner]

Thank you for the answer.
This solution I know.
LDAA#'A'
LDAB#'A'

But we have here an old HP assembler for our HC11 controller and with that assembler the
LDD #'AA' instruction works.

[CompilerGuru · Accepted solution]

With a


LDD #('a' << 8) + 'a'


You should get the same code (should because I did not try it out).
I dont think multi byte character constants are supported in the CW HC12 assembler.

Daniel

[Pitrunner]

Daniel,

thank you for the hint that multi byte character aren't supported with CW.
So I will try your solution.