mirror of
https://github.com/nathanriggs/AppleIIAsm-Collection.git
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9f35f32f67
- massive overhaul of architecture - first round of optimizations - first draft of the technical manual for the entire library - reorganization of directory structure
36 lines
986 B
Plaintext
36 lines
986 B
Plaintext
*
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*``````````````````````````````*
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* DPRINT (NATHAN RIGGS) *
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* *
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* PRINT A ZERO-TERMINATED *
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* STRING AT A GIVEN ADDRESS. *
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* *
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* INPUT: *
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* *
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* WPAR1 = STRING ADDRESS (2B) *
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* *
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* OUTPUT: *
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* *
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* PRINT STRING TO SCREEN *
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* *
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* DESTROYS: AXYNVBDIZCMS *
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* ^^^^ ^ ^ *
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* *
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* CYCLES: 61+ *
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* SIZE: 27 BYTES *
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*,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,*
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*
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]ADDR1 EQU WPAR1
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*
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DPRINT
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*
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LDY #$00 ; RESET COUNTER
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:LOOP
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LDA (]ADDR1),Y
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BEQ :EXIT ; IF CHAR = $00 THEN EXIT
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JSR COUT1 ; OTHERWISE, PRINT CHAR
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INY ; INCREAS COUNTER
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BNE :LOOP ; IF COUNTER < 256, LOOP
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:EXIT
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RTS
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