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181681708c
* First pass Z80 register xml file Hover support for Z80 registers Remove extraneous semicolons Short Z80 register descriptions Initial commit for z80 instructions xml and its generator. Co-authored-by: gilbertfrancois <> Checkpoint commit, sketching out z80 data structs Appease clippy Chore: Update opcodes (#40) * Chore: Update opcodes xml files * Update parser for updated xml files Cleaning up More clean up, syncing up with master branch Simplifying things... Most z80 features working, need to polish instruction hover support Hover display tweaks, correct URL escaping, formatting Z80 documentation now opens at correct section Initial work on instruction descriptions Instruction descriptions done Z80 Signature Help support Fix logic bug for file word grab * Cleanup
16 lines
738 B
ArmAsm
16 lines
738 B
ArmAsm
; Taken from page 53 of the manual https://www.zilog.com/docs/z80/z80cpu_um.pdf
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LD HL, DATA ;STARTING ADDRESS OF DATA STRING
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LD DE, BUFFER ;STARTING ADDRESS OF TARGET BUFFER
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LD B', 132 ;MAXIMUM STRING LENGTH
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LD A, '$' ;STRING DELIMITER CODE
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LOOP:
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CP (HL) ;COMPARE MEMORY CONTENTS WITH
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;DELIMITER
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JR Z, END-$ ;GO TO END IF CHARACTERS EQUAL
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LDI ;MOVE CHARACTER (HL) to (DE)
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;INCREMENT HL AND DE, DECREMENT BC
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JP PE, LOOP ;GO TO "LOOP" IF MORE CHARACTERS
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END: ;OTHERWISE, FALL THROUGH
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;NOTE: P/V FLAG IS USED
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;TO INDICATE THAT REGISTER BC WAS
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;DECREMENTED TO ZERO.
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