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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
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5
Task/Gotchas/Z80-Assembly/gotchas-1.z80 Normal file
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LD HL,(&C000) ;load the word at address &C000 into HL
LD A,(HL) ;treating the value in HL as a memory address, load the byte at that address into A.
EX (SP),HL ;exchange HL with the top two bytes of the stack.
JP (HL) ;set the program counter equal to HL. Nothing is loaded from memory pointed to by HL.

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Task/Gotchas/Z80-Assembly/gotchas-2.z80 Normal file
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ld a,&46
ld bc,&0734
out (C),a ;write &46 to port &0734 if the ports are 16-bit. Otherwise, it writes to port &34.

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Task/Gotchas/Z80-Assembly/gotchas-3.z80 Normal file
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EI ;RETI doesn't enable interrupts on this Z80.
RET