6502 assembly coding

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Changed of hosting strategy

Last post by Magoric « Sun Mar 07, 2021 9:56 pm
Posted in General Discussion
Replies: 13
by Dbug » Sun Jun 28, 2020 4:34 pm » in General Discussion

13 Replies

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Last post by Magoric
Sun Mar 07, 2021 9:56 pm

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A little more speed from the 6502 ...

Last post by Dbug « Sun Jun 26, 2022 11:49 am
Replies: 1
by ibisum » Sun Jun 26, 2022 10:54 am

1 Replies

96 Views

Last post by Dbug
Sun Jun 26, 2022 11:49 am
looking for a pixel flood fill routine

Last post by Dbug « Wed Feb 23, 2022 6:33 pm
Replies: 47
by goyo » Wed Sep 01, 2021 1:11 pm
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47 Replies

15490 Views

Last post by Dbug
Wed Feb 23, 2022 6:33 pm
Modifying interrupt address

Last post by Symoon « Fri Feb 18, 2022 9:37 pm
Replies: 13
by Symoon » Tue Feb 15, 2022 9:49 am

13 Replies

1589 Views

Last post by Symoon
Fri Feb 18, 2022 9:37 pm
Problem porting C code to ASM

Last post by jbperin « Thu Oct 07, 2021 3:04 pm
Replies: 8
by jbperin » Wed Oct 06, 2021 2:18 pm

8 Replies

2062 Views

Last post by jbperin
Thu Oct 07, 2021 3:04 pm
ROM disassembly

Last post by Dbug « Sun Mar 21, 2021 11:02 am
Replies: 12
by Xeron » Sat Mar 07, 2009 5:22 pm

12 Replies

28246 Views

Last post by Dbug
Sun Mar 21, 2021 11:02 am
Assembler / disassembler

Last post by Symoon « Fri Feb 12, 2021 8:08 am
Replies: 11
by Symoon » Sun Aug 20, 2017 11:00 am

11 Replies

13862 Views

Last post by Symoon
Fri Feb 12, 2021 8:08 am
Oric Atmos ROM 1.1b Disassembly - browsable listing by [raxiss]

Last post by Steve M « Mon Jan 04, 2021 1:22 am
Replies: 3
by iss » Fri Dec 25, 2020 12:23 pm

3 Replies

3519 Views

Last post by Steve M
Mon Jan 04, 2021 1:22 am
lda simplification of relative y index value ?

Last post by jbperin « Mon Dec 14, 2020 9:03 pm
Replies: 7
by goyo » Fri Dec 11, 2020 6:47 pm

7 Replies

3655 Views

Last post by jbperin
Mon Dec 14, 2020 9:03 pm
lda with 16 bits indirect address ?

Last post by goyo « Wed Dec 09, 2020 7:13 pm
Replies: 2
by goyo » Wed Dec 09, 2020 3:59 pm

2 Replies

1848 Views

Last post by goyo
Wed Dec 09, 2020 7:13 pm
Good documented source code examples on viewing selected part of bigger game map

Last post by xahmol « Sat Nov 21, 2020 1:03 pm
Replies: 12
by xahmol » Thu Nov 12, 2020 3:13 pm

12 Replies

4475 Views

Last post by xahmol
Sat Nov 21, 2020 1:03 pm
substraction of two 8bits signed values into a signed 16 bits

Last post by Chema « Fri Oct 02, 2020 12:55 pm
Replies: 7
by jbperin » Wed Sep 30, 2020 6:10 pm

7 Replies

4684 Views

Last post by Chema
Fri Oct 02, 2020 12:55 pm
set color and paper

Last post by goyo « Sat Aug 29, 2020 1:13 pm
Replies: 9
by goyo » Mon Aug 24, 2020 5:36 pm

9 Replies

5273 Views

Last post by goyo
Sat Aug 29, 2020 1:13 pm
Complete list of Oric Atmos adreeses

Last post by Steve M « Wed Jul 15, 2020 4:31 pm
Replies: 26
by coco.oric » Fri Jun 12, 2020 6:00 am
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26 Replies

11891 Views

Last post by Steve M
Wed Jul 15, 2020 4:31 pm
Assembly functions for Sedoric OPEN, TAKE, PUT, CLOSE

Last post by Chema « Thu May 21, 2020 1:36 pm
Replies: 25
by 8bit-Dude » Mon May 18, 2020 5:21 am
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25 Replies

10265 Views

Last post by Chema
Thu May 21, 2020 1:36 pm
Reading keyboard status, with keypress sound and cursor flashing disabled

Last post by Chema « Wed Apr 22, 2020 1:37 pm
Replies: 9
by marmakoide » Tue Apr 21, 2020 8:54 pm

9 Replies

5273 Views

Last post by Chema
Wed Apr 22, 2020 1:37 pm
XA Output

Last post by Badger « Thu Oct 24, 2019 6:21 am
Replies: 2
by Badger » Tue Oct 22, 2019 7:54 pm

2 Replies

6198 Views

Last post by Badger
Thu Oct 24, 2019 6:21 am
How to create random number with machine code?

Last post by Chema « Thu Mar 07, 2019 8:54 pm
Replies: 12
by peacer » Sun Dec 23, 2018 12:45 am

12 Replies

14188 Views

Last post by Chema
Thu Mar 07, 2019 8:54 pm
Help with a "Your computer" program

Last post by peacer « Wed Mar 06, 2019 8:30 pm
Replies: 11
by peacer » Fri Feb 08, 2019 1:00 am

11 Replies

10047 Views

Last post by peacer
Wed Mar 06, 2019 8:30 pm
Substraction and Addition

Last post by mikeb « Sun Jan 27, 2019 8:39 pm
Replies: 4
by peacer » Tue Dec 25, 2018 11:56 pm

4 Replies

6164 Views

Last post by mikeb
Sun Jan 27, 2019 8:39 pm
ROM 1.0 / 1.1 compatible programming trick?

Last post by NekoNoNiaow « Tue Nov 27, 2018 6:41 am
Replies: 6
by Symoon » Tue Nov 06, 2018 10:53 pm

6 Replies

7731 Views

Last post by NekoNoNiaow
Tue Nov 27, 2018 6:41 am
My first ASM and it doesnt do what I expect

Last post by Chema « Thu Nov 01, 2018 9:10 pm
Replies: 5
by Badger » Wed Oct 31, 2018 11:02 pm

5 Replies

6482 Views

Last post by Chema
Thu Nov 01, 2018 9:10 pm
Horizontal HIRES and Text scrolling code needed.

Last post by Dbug « Wed May 23, 2018 8:22 pm
Replies: 33
by peacer » Mon Jun 24, 2013 9:05 am
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33 Replies

44885 Views

Last post by Dbug
Wed May 23, 2018 8:22 pm
6502 flags C, N, Z, V and tests

Last post by ThomH « Tue May 22, 2018 3:10 pm
Replies: 7
by Symoon » Sat May 19, 2018 10:06 am

7 Replies

8477 Views

Last post by ThomH
Tue May 22, 2018 3:10 pm
Pseudo 3D Starfield

Last post by Chema « Mon May 21, 2018 5:52 pm
Replies: 3
by Twilighte » Tue Mar 11, 2008 5:36 pm

3 Replies

11425 Views

Last post by Chema
Mon May 21, 2018 5:52 pm
Identifying Oric-1

Last post by Godzil « Sun Feb 25, 2018 5:59 pm
Replies: 4
by polluks » Fri Dec 15, 2017 3:25 pm

4 Replies

10292 Views

Last post by Godzil
Sun Feb 25, 2018 5:59 pm
Help: loop this?

Last post by Symoon « Tue Aug 29, 2017 9:38 pm
Replies: 6
by Symoon » Sat Aug 26, 2017 7:45 am

6 Replies

11751 Views

Last post by Symoon
Tue Aug 29, 2017 9:38 pm
Convert a byte as hex string (to display on screen)

Last post by Dbug « Mon Aug 07, 2017 4:50 pm
Replies: 9
by Symoon » Fri Aug 04, 2017 7:41 pm

9 Replies

16318 Views

Last post by Dbug
Mon Aug 07, 2017 4:50 pm
Mysterious program

Last post by Symoon « Mon Jun 26, 2017 5:35 am
Replies: 14
by Symoon » Sat Feb 25, 2012 7:26 pm

14 Replies

22795 Views

Last post by Symoon
Mon Jun 26, 2017 5:35 am
Invert Carry

Last post by Symoon « Tue Aug 02, 2016 7:33 pm
Replies: 14
by Symoon » Fri Jul 29, 2016 7:29 pm

14 Replies

21087 Views

Last post by Symoon
Tue Aug 02, 2016 7:33 pm
List of 1.0 and 1.1 ROM routines ?

Last post by waskol « Mon Mar 28, 2016 4:33 am
Replies: 23
by Symoon » Mon Apr 06, 2015 11:52 am
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2
23 Replies

45649 Views

Last post by waskol
Mon Mar 28, 2016 4:33 am
Brainf*ck for Oric

Last post by coco.oric « Sun Dec 27, 2015 3:28 am
Replies: 2
by iss » Sat Dec 26, 2015 2:01 pm

2 Replies

14628 Views

Last post by coco.oric
Sun Dec 27, 2015 3:28 am
BigMac(Merlin) and Monitor - Sedoric version

Last post by ibisum « Sun Jun 28, 2015 7:54 pm
Replies: 1
by iss » Sun Jun 28, 2015 1:55 pm

1 Replies

17836 Views

Last post by ibisum
Sun Jun 28, 2015 7:54 pm
Clearing the screen

Last post by Dbug « Sun Jun 28, 2015 12:16 pm
Replies: 6
by ChrisfromUSA » Sat Jun 27, 2015 10:02 pm

6 Replies

21860 Views

Last post by Dbug
Sun Jun 28, 2015 12:16 pm
colors

Last post by coco.oric « Sun Jun 28, 2015 6:50 am
Replies: 1
by ChrisfromUSA » Sun Jun 28, 2015 1:48 am

1 Replies

15723 Views

Last post by coco.oric
Sun Jun 28, 2015 6:50 am
Time-Measurement

Last post by Chema « Mon May 11, 2015 11:17 am
Replies: 12
by Nox » Sat Feb 27, 2010 4:05 pm

12 Replies

30374 Views

Last post by Chema
Mon May 11, 2015 11:17 am
symbolique assembler/editor - know how to use it?

Last post by ibisum « Mon May 11, 2015 9:51 am
Replies: 8
by ibisum » Sat May 09, 2015 2:52 pm

8 Replies

21633 Views

Last post by ibisum
Mon May 11, 2015 9:51 am
SWEET16 : Nice VM from Woz ..

Last post by ibisum « Mon Mar 02, 2015 5:34 pm
Replies: 2
by ibisum » Mon Mar 02, 2015 3:00 pm

2 Replies

11653 Views

Last post by ibisum
Mon Mar 02, 2015 5:34 pm
Re Oric Atmos Editor Assembler Disassembler

Last post by ibisum « Sat Feb 28, 2015 12:03 pm
Replies: 1
by jdavis6809 » Sat Feb 28, 2015 11:27 am

1 Replies

8094 Views

Last post by ibisum
Sat Feb 28, 2015 12:03 pm
Which assembler is this from ?

Last post by ibisum « Thu Feb 05, 2015 8:23 pm
Replies: 10
by Symoon » Sun Jul 06, 2014 4:33 pm

10 Replies

16441 Views

Last post by ibisum
Thu Feb 05, 2015 8:23 pm
Setbit and Testbit

Last post by Hialmar « Sat Jan 24, 2015 5:55 pm
Replies: 10
by Hialmar » Sun Jan 04, 2015 1:43 pm

10 Replies

17054 Views

Last post by Hialmar
Sat Jan 24, 2015 5:55 pm
How to calculate memory location of a coordinate?

Last post by Hialmar « Tue Aug 19, 2014 5:48 pm
Replies: 11
by peacer » Sat Aug 16, 2014 1:28 pm

11 Replies

18774 Views

Last post by Hialmar
Tue Aug 19, 2014 5:48 pm
How to "rotate" a character..

Last post by peacer « Sun Mar 30, 2014 11:24 am
Replies: 8
by peacer » Sat Mar 29, 2014 6:56 pm

8 Replies

15205 Views

Last post by peacer
Sun Mar 30, 2014 11:24 am
rom

Last post by Godzil « Fri Feb 07, 2014 1:36 pm
Replies: 4
by D3v4st31i0n » Fri Jan 31, 2014 9:08 pm

4 Replies

11507 Views

Last post by Godzil
Fri Feb 07, 2014 1:36 pm
Line routine - Second attempt

Last post by JamesD « Sat Jan 25, 2014 12:53 am
Replies: 66
by Dbug » Tue Mar 18, 2008 10:01 pm
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66 Replies

94769 Views

Last post by JamesD
Sat Jan 25, 2014 12:53 am
Sprites

Last post by Iapetus « Wed Dec 11, 2013 10:22 am
Replies: 23
by Iapetus » Mon Apr 09, 2012 4:01 pm
1

2
23 Replies

35935 Views

Last post by Iapetus
Wed Dec 11, 2013 10:22 am
Cycles and video timing II

Last post by Iapetus « Wed Sep 25, 2013 8:18 pm
Replies: 19
by Symoon » Sun Jun 09, 2013 5:05 pm
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19 Replies

29824 Views

Last post by Iapetus
Wed Sep 25, 2013 8:18 pm
A little help for a simple machine code program.

Last post by peacer « Mon Jul 29, 2013 10:48 pm
Replies: 5
by peacer » Mon Jul 29, 2013 6:16 pm

5 Replies

12485 Views

Last post by peacer
Mon Jul 29, 2013 10:48 pm
Copying Chars from b400 to hires screen

Last post by barnsey123 « Tue Jun 11, 2013 8:51 pm
Replies: 6
by barnsey123 » Sun Jun 09, 2013 6:15 pm

6 Replies

14463 Views

Last post by barnsey123
Tue Jun 11, 2013 8:51 pm
Video about 6502

Last post by barnsey123 « Mon Jun 10, 2013 2:44 pm

by barnsey123 » Mon Jun 10, 2013 2:44 pm

0 Replies

18234 Views

Last post by barnsey123
Mon Jun 10, 2013 2:44 pm
Post the fun code you found!

Last post by Godzil « Sun Jan 27, 2013 12:46 am
Replies: 4
by Godzil » Tue Jan 22, 2013 2:21 am

4 Replies

12036 Views

Last post by Godzil
Sun Jan 27, 2013 12:46 am

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