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README.md
29
README.md
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@ -5,9 +5,9 @@
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Features:
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* Highly optimized for space
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* No zero-page usage [version](print_uint16.s) 89 ($59) bytes
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* With zero-page usage [version](print_uint16_zp.s) 77 ($4D) bytes
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* With stack var usage [version](print_uint16_sp.s) 91 ($5B) bytes
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* No zero-page usage [version](print_uint16.s) 81 ($51) bytes
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* With zero-page usage [version](print_uint16_zp.s) 69 ($45) bytes
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* With stack var usage [version](print_uint16_sp.s) 83 ($53) bytes
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* Only 2 ROM entry points: COUT, SCRN2
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* Includes 7 byte demo
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@ -19,17 +19,16 @@ Sans-Zero-Page version:
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```asm
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0800:A9 12 A2 34 4C 07 08 8E
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0808:5F 08 48 A2 00 8E 5C 08
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0810:8E 5D 08 8E 5E 08 A2 10
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0818:F8 0E 5F 08 68 2A 48 A0
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0820:FD B9 5F 07 79 5F 07 99
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0828:5F 07 C8 D0 F4 CA D0 E9
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0830:68 D8 A0 03 B9 5B 08 20
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0808:57 08 48 A2 00 8E 54 08
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0810:8E 55 08 8E 56 08 A2 10
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0818:F8 0E 57 08 68 2A 48 A0
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0820:FD B9 57 07 79 57 07 99
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0828:57 07 C8 D0 F4 CA D0 E9
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0830:68 D8 A0 03 B9 53 08 20
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0838:41 08 88 D0 F7 8A F0 0E
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0840:60 48 20 7B F8 20 4B 08
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0848:68 29 0F D0 01 CA E8 F0
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0850:EF C9 0A 90 02 69 06 69
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0858:B0 4C ED FD 00 00 00 00
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0850:EF 4C E5 FD 00 00 00 00
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```
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With-Zero-Page version:
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@ -44,8 +43,7 @@ With-Zero-Page version:
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0930:39 09 88 D0 F7 8A F0 0E
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0938:60 48 20 7B F8 20 43 09
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0940:68 29 0F D0 01 CA E8 F0
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0948:EF C9 0A 90 02 69 06 69
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0950:B0 4C ED FD
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0948:EF 4C E5 FD
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```
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With-Stack-Page version:
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@ -61,9 +59,8 @@ With-Stack-Page version:
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0A38:98 F0 19 60 BD 01 01 7D
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0A40:01 01 9D 01 01 E8 60 48
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0A48:20 7B F8 20 51 0A 68 29
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0A50:0F D0 01 88 C8 F0 E4 C9
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0A58:0A 90 02 69 06 69 B0 4C
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0A60:ED FD
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0A50:0F D0 01 88 C8 F0 E4 4C
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0A58:E5 FD
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```
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# License
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BIN
print_uint16
BIN
print_uint16
Binary file not shown.
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; Thanks to Gids for nudging a zero-page version
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; F8 ROM Entry Points
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COUT = $FDED
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PRHEXZ = $FDE5
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SCRN2 = $F879
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ORG $800
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_HaveLeadingDigit
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INX ; X = flag to specify non-zero leading digit was seen
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BEQ _PrintDone
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CMP #$A ; n < 10 ?
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BCC _Hex2Asc
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ADC #6 ; n += 6 $A -> +6 + (C=1) = $11
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_Hex2Asc
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ADC #'0' + $80 ; inverse=remove #$80
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JMP COUT
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JMP PRHEXZ
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_bcd ds 3 ; 6 chars for printing dec
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_temp db 0
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BIN
print_uint16_sp
BIN
print_uint16_sp
Binary file not shown.
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; Thanks to Gids for nudging a zero-page version
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; F8 ROM Entry Points
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COUT = $FDED
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PRHEXZ = $FDE5
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SCRN2 = $F879
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ORG $A00 ; Intentionally different from sans-zero-page & with-zero-page
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@ -90,12 +90,5 @@ _HexNib
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_HaveLeadingDigit
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INY ; Y = output string length
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BEQ _PrintDone
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CMP #$A ; n < 10 ?
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BCC _Hex2Asc
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ADC #6 ; n += 6 $A -> +6 + (C=1) = $11
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_Hex2Asc
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ADC #'0' + $80 ; inverse=remove #$80
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PutChar
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JMP COUT
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JMP PRHEXZ
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BIN
print_uint16_zp
BIN
print_uint16_zp
Binary file not shown.
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; Thanks to Gids for nudging a zero-page version
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; F8 ROM Entry Points
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COUT = $FDED
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PRHEXZ = $FDE5
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SCRN2 = $F879
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; Zero-Page Version - 4 locations used
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_HaveLeadingDigit
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INX ; X = flag to specify non-zero leading digit was seen
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BEQ _PrintDone
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CMP #$A ; n < 10 ?
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BCC _Hex2Asc
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ADC #6 ; n += 6 $A -> +6 + (C=1) = $11
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_Hex2Asc
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ADC #'0' + $80 ; inverse=remove #$80
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JMP COUT
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JMP PRHEXZ
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