Apple-2-SW
/
apple2_print_uint16
mirror of https://github.com/Michaelangel007/apple2_print_uint16.git
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Merged Peter shaving off another byte

This commit is contained in:
Michaelangel007 2017-07-06 15:08:39 -07:00
parent 624d749f18
commit 2786f635aa
7 changed files with 31 additions and 31 deletions
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39
README.md
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@ -5,9 +5,9 @@
Features:
* Highly optimized for space
* No zero-page usage [version](print_uint16.s) 90 ($5A) bytes
* With zero-page usage [version](print_uint16_zp.s) 78 ($4E) bytes
* With stack var usage [version](print_uint16_sp.s) 92 ($5C) bytes
* No zero-page usage [version](print_uint16.s) 89 ($59) bytes
* With zero-page usage [version](print_uint16_zp.s) 77 ($4D) bytes
* With stack var usage [version](print_uint16_sp.s) 91 ($5B) bytes
* Only 2 ROM entry points: COUT, SCRN2
* Includes 7 byte demo
@ -19,18 +19,17 @@ Sans-Zero-Page version:
```asm
0800:A9 12 A2 34 4C 07 08 8E
0808:60 08 48 A2 00 8E 5D 08
0810:8E 5E 08 8E 5F 08 A2 10
0818:F8 0E 60 08 68 2A 48 A0
0820:FD B9 60 07 79 60 07 99
0828:60 07 C8 D0 F4 CA D0 E9
0830:68 D8 A0 03 B9 5C 08 20
0838:41 08 88 D0 F7 8A F0 11
0808:5F 08 48 A2 00 8E 5C 08
0810:8E 5D 08 8E 5E 08 A2 10
0818:F8 0E 5F 08 68 2A 48 A0
0820:FD B9 5F 07 79 5F 07 99
0828:5F 07 C8 D0 F4 CA D0 E9
0830:68 D8 A0 03 B9 5B 08 20
0838:41 08 88 D0 F7 8A F0 0E
0840:60 48 20 7B F8 20 4B 08
0848:68 29 0F D0 04 E0 00 F0
0848:68 29 0F D0 01 CA E8 F0
0850:EF C9 0A 90 02 69 06 69
0858:B0 E8 4C ED FD 00 00 00
0860:00
0858:B0 4C ED FD 00 00 00 00
```
With-Zero-Page version:
@ -42,11 +41,11 @@ With-Zero-Page version:
0918:2A 48 A2 FD B5 00 75 00
0920:95 00 E8 D0 F7 88 D0 ED
0928:68 D8 A0 03 B9 FC 00 20
0930:39 09 88 D0 F7 8A F0 11
0930:39 09 88 D0 F7 8A F0 0E
0938:60 48 20 7B F8 20 43 09
0940:68 29 0F D0 04 E0 00 F0
0940:68 29 0F D0 01 CA E8 F0
0948:EF C9 0A 90 02 69 06 69
0950:B0 E8 4C ED FD
0950:B0 4C ED FD
```
With-Stack-Page version:
@ -59,12 +58,12 @@ With-Stack-Page version:
0A20:0A 20 3C 0A 88 D0 EA D8
0A28:BD 00 01 20 47 0A CA E0
0A30:00 D0 F5 8A 69 04 AA 9A
0A38:98 F0 1C 60 BD 01 01 7D
0A38:98 F0 19 60 BD 01 01 7D
0A40:01 01 9D 01 01 E8 60 48
0A48:20 7B F8 20 51 0A 68 29
0A50:0F D0 04 C0 00 F0 E4 C9
0A58:0A 90 02 69 06 69 B0 C8
0A60:4C ED FD
0A50:0F D0 01 88 C8 F0 E4 C9
0A58:0A 90 02 69 06 69 B0 4C
0A60:ED FD
```
# License

BIN
print_uint16
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Binary file not shown.

8
print_uint16.s
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@ -77,17 +77,17 @@ HexA
AND #$F
_HexNib
BNE _HaveLeadingDigit ; If have leading zero and no output yet ...
CPX #0 ; ... then skip storing it
BEQ _PrintDone
DEX ; ... then skip storing it
_HaveLeadingDigit
INX ; X = flag to specify non-zero leading digit was seen
BEQ _PrintDone
CMP #$A ; n < 10 ?
BCC _Hex2Asc
ADC #6 ; n += 6 $A -> +6 + (C=1) = $11
_Hex2Asc
ADC #'0' + $80 ; inverse=remove #$80
PutChar
INX ; X = output string length
JMP COUT
_bcd ds 3 ; 6 chars for printing dec

BIN
print_uint16_sp
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Binary file not shown.

7
print_uint16_sp.s
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@ -85,16 +85,17 @@ HexA
AND #$F
_HexNib
BNE _HaveLeadingDigit ; If have leading zero and no output yet ...
CPY #0 ; ... then skip storing it
BEQ _PrintDone
DEY ; ... then skip storing it
_HaveLeadingDigit
INY ; Y = output string length
BEQ _PrintDone
CMP #$A ; n < 10 ?
BCC _Hex2Asc
ADC #6 ; n += 6 $A -> +6 + (C=1) = $11
_Hex2Asc
ADC #'0' + $80 ; inverse=remove #$80
PutChar
INY ; Y = output string length
JMP COUT

BIN
print_uint16_zp
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Binary file not shown.

8
print_uint16_zp.s
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@ -81,16 +81,16 @@ HexA
AND #$F
_HexNib
BNE _HaveLeadingDigit ; If have leading zero and no output yet ...
CPX #0 ; ... then skip storing it
BEQ _PrintDone
DEX ; ... then skip storing it
_HaveLeadingDigit
INX ; X = flag to specify non-zero leading digit was seen
BEQ _PrintDone
CMP #$A ; n < 10 ?
BCC _Hex2Asc
ADC #6 ; n += 6 $A -> +6 + (C=1) = $11
_Hex2Asc
ADC #'0' + $80 ; inverse=remove #$80
PutChar
INX ; X = output string length
JMP COUT