2017-07-05 16:44:21 -07:00
|
|
|
# Print unsigned 16-bit
|
|
|
|
|
|
2017-07-06 07:58:22 -07:00
|
|
|
6502 assembly code to print an unsigned 16-bit.
|
2017-07-05 16:44:21 -07:00
|
|
|
|
2017-07-05 20:29:04 -07:00
|
|
|
Features:
|
2017-07-05 16:57:33 -07:00
|
|
|
|
2017-07-06 07:58:22 -07:00
|
|
|
* Highly optimized for space
|
2017-07-06 12:43:29 -07:00
|
|
|
* No zero-page usage [version](print_uint16.s) 90 ($5A) bytes
|
2017-07-06 07:58:22 -07:00
|
|
|
* With zero-page usage [version](print_uint16_zp.s) 78 ($4E) bytes
|
2017-07-06 12:43:29 -07:00
|
|
|
* With stack var usage [version](print_uint16_sp.s) 92 ($5C) bytes
|
2017-07-05 20:29:04 -07:00
|
|
|
* Only 2 ROM entry points: COUT, SCRN2
|
2017-07-05 17:00:07 -07:00
|
|
|
* Includes 7 byte demo
|
2017-07-05 16:58:26 -07:00
|
|
|
|
2017-07-05 16:45:22 -07:00
|
|
|
# Machine Code
|
|
|
|
|
|
2017-07-05 16:57:33 -07:00
|
|
|
Copy/Paste into your favorite emulator.
|
|
|
|
|
|
2017-07-06 07:58:22 -07:00
|
|
|
Sans-Zero-Page version:
|
|
|
|
|
|
2017-07-05 16:46:01 -07:00
|
|
|
```asm
|
2017-07-05 16:45:22 -07:00
|
|
|
0800:A9 12 A2 34 4C 07 08 8E
|
2017-07-06 07:58:22 -07:00
|
|
|
0808:60 08 48 A2 00 8E 5D 08
|
2017-07-05 23:08:47 -07:00
|
|
|
0810:8E 5E 08 8E 5F 08 A2 10
|
2017-07-06 07:58:22 -07:00
|
|
|
0818:F8 0E 60 08 68 2A 48 A0
|
2017-07-05 23:08:47 -07:00
|
|
|
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
|
|
|
|
|
0840:60 48 20 7B F8 20 4B 08
|
|
|
|
|
0848:68 29 0F D0 04 E0 00 F0
|
|
|
|
|
0850:EF C9 0A 90 02 69 06 69
|
|
|
|
|
0858:B0 E8 4C ED FD 00 00 00
|
2017-07-06 07:58:22 -07:00
|
|
|
0860:00
|
2017-07-05 16:46:01 -07:00
|
|
|
```
|
2017-07-05 16:45:22 -07:00
|
|
|
|
2017-07-06 07:58:22 -07:00
|
|
|
With-Zero-Page version:
|
|
|
|
|
|
|
|
|
|
```asm
|
|
|
|
|
0900:A9 12 A2 34 4C 07 09 86
|
|
|
|
|
0908:FC 48 A0 00 84 FD 84 FE
|
|
|
|
|
0910:84 FF A0 10 F8 06 FC 68
|
|
|
|
|
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
|
|
|
|
|
0938:60 48 20 7B F8 20 43 09
|
|
|
|
|
0940:68 29 0F D0 04 E0 00 F0
|
|
|
|
|
0948:EF C9 0A 90 02 69 06 69
|
|
|
|
|
0950:B0 E8 4C ED FD
|
|
|
|
|
```
|
2017-07-05 16:57:33 -07:00
|
|
|
|
2017-07-06 12:43:29 -07:00
|
|
|
With-Stack-Page version:
|
|
|
|
|
|
|
|
|
|
```asm
|
|
|
|
|
0900:A9 12 A2 34 4C 07 09 A0
|
|
|
|
|
0908:00 48 DA 5A 5A 5A A0 10
|
|
|
|
|
0910:F8 BA 8E 30 09 1E 04 01
|
|
|
|
|
0918:3E 05 01 20 3C 09 20 3C
|
|
|
|
|
0920:09 20 3C 09 88 D0 EA D8
|
|
|
|
|
0928:BD 00 01 20 47 09 CA E0
|
|
|
|
|
0930:00 D0 F5 8A 69 04 AA 9A
|
|
|
|
|
0938:98 F0 1C 60 BD 01 01 7D
|
|
|
|
|
0940:01 01 9D 01 01 E8 60 48
|
|
|
|
|
0948:20 7B F8 20 51 09 68 29
|
|
|
|
|
0950:0F D0 04 C0 00 F0 E4 C9
|
|
|
|
|
0958:0A 90 02 69 06 69 B0 C8
|
|
|
|
|
0960:4C ED FD
|
|
|
|
|
```
|
|
|
|
|
|
2017-07-05 16:47:13 -07:00
|
|
|
# License
|
|
|
|
|
|
|
|
|
|
[WTFPL](http://www.wtfpl.net/)
|
|
|
|
|
|
2017-07-05 16:57:33 -07:00
|
|
|
|
2017-07-05 17:01:04 -07:00
|
|
|
# Thanks
|
2017-07-05 16:57:33 -07:00
|
|
|
|
|
|
|
|
* qkumba for great optimization ideas as always
|
2017-07-06 12:45:49 -07:00
|
|
|
* Gids for a gentle nudge to have a zero-page version
|
2017-07-05 17:01:04 -07:00
|
|
|
* Everyone on comp.sys.apple2
|
2017-07-05 16:57:33 -07:00
|
|
|
|
|
|
|
|
|
2017-07-05 16:44:21 -07:00
|
|
|
# References
|
|
|
|
|
|
2017-07-05 16:47:13 -07:00
|
|
|
* [printm](https://github.com/Michaelangel007/apple2_printm)
|
|
|
|
|
|
2017-07-05 16:44:21 -07:00
|
|
|
Apple Monitor: Print Integer?
|
|
|
|
|
* https://groups.google.com/forum/m/#!topic/comp.sys.apple2/EQmJAuNz8Vg
|
|
|
|
|
|
