Write programs that will accomplish the desired tasks listed below, using as few lines of code as possible. Use only opcodes that have been covered in class. Comment on each line of code. m) Copy the external code byte at address 007Dh to the SP n) Copy the data in register R5 to external RAM address 032Fh o) Copy the internal code byte at address 0300h to external RAM address 0300h p) Swap the bytes in TIMER 0 ; put TL0 in TH0 and TH0 in TL0 q) Store DPTR in external RAM locations 0123h (DPL) and 02BCh (DPH) r) Exchange both low nibbles of registers R0 and R1 ; put the low nibble of R0 in R1, and the low nibble of R1 in R0 s) Store the content of register R3 at the internal RAM address contained in R2. (Be sure the address in R2 is legal) t) Store the content of RAM location 20h at the address contained in RAM location 08h u) Store register A at the internal RAM location address in register A
Write programs that will accomplish the desired tasks listed below, using as few lines of code as possible.
Use only opcodes that have been covered in class. Comment on each line of code.
m) Copy the external code byte at address 007Dh to the SP
n) Copy the data in register R5 to external RAM address 032Fh
o) Copy the internal code byte at address 0300h to external RAM address 0300h
p) Swap the bytes in TIMER 0 ; put TL0 in TH0 and TH0 in TL0
q) Store DPTR in external RAM locations 0123h (DPL) and 02BCh (DPH)
r) Exchange both low nibbles of registers R0 and R1 ; put the low nibble of R0 in R1, and the low
nibble of R1 in R0
s) Store the content of register R3 at the internal RAM address contained in R2. (Be sure the address
in R2 is legal)
t) Store the content of RAM location 20h at the address contained in RAM location 08h
u) Store register A at the internal RAM location address in register A
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