High-Address into the accumulator in asm using only LDA

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High-Address into the accumulator in asm using only LDA

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Brax02
Contributor III

Hello,

 

I have declare a table like that.

 

ABC:                DC.W  $1234          

 

The address of ABC is in my example 0xF200

 

I want to load in the accumulator 0xF2 only using a LDA command.

 

LDA  #ABC==> A=0x0, 0x0 is the LSB of the address and not the MSB of the address 0xF2

 

How can i do that ?

 

for sure I can do something like but it's not the goal.

 

          LDHX #ABC  ; HX = F200

          PSHH         

          PULA          ;A=0xF2

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implicit
Contributor II

I believe you want to use the HIGH operator in this case, at least for CodeWarrior's built-in HCS08 assembler.

E.g.

LDA #HIGH(ABC)

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implicit
Contributor II

I believe you want to use the HIGH operator in this case, at least for CodeWarrior's built-in HCS08 assembler.

E.g.

LDA #HIGH(ABC)

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Brax02
Contributor III

I was exactly looking for that ! Thanks a lot !!

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bigmac
Specialist III

Hello,

The following alternatives should also work -

   lda #(ABC/256)

   lda #(ABC>>8)

The calculation is done during assembly.

Regards,

Mac

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