Waqar Zaka wrote:
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when i write this in program
MOV DPH,HI(65486)
MOV DPL,LO(65486)

this error occurs

Extra Characters at end of operand

i think it means it does not support DPH, DPL format...or am i using the right way to write this instruction

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1.perhaps you should try
MOV DPH,#HI(65486)
MOV DPL,#LO(65486)
2.try to include header register file.in metalink assembler you need to add $mod51 at
the top to include definitions for 8051 registers.check assembler documentation

Pranav