6502 assembly coding

New Topic

100 topics

Announcements

Replies

Views

Last post

Changed of hosting strategy

Last post by Dbug « Thu Jan 16, 2025 8:17 am
Posted in General Discussion
Replies: 16
by Dbug » Sun Jun 28, 2020 4:34 pm » in General Discussion
1

2
16 Replies

832058 Views

Last post by Dbug
Thu Jan 16, 2025 8:17 am

Topics

Replies

Views

Last post

specific address code

Last post by Dbug « Tue Dec 09, 2025 8:37 pm
Replies: 21
by goyo » Mon Oct 13, 2025 7:42 pm
1

2
21 Replies

1222 Views

Last post by Dbug
Tue Dec 09, 2025 8:37 pm
Generating a screen of random colors as quickly as possible ..

Last post by ibisum « Sun Sep 29, 2024 6:11 pm
Replies: 4
by ibisum » Sun Sep 29, 2024 3:30 pm

4 Replies

36619 Views

Last post by ibisum
Sun Sep 29, 2024 6:11 pm
C array reference from asm code with XA ?

Last post by goyo « Tue Jul 23, 2024 3:30 am
Replies: 7
by goyo » Sat Jul 13, 2024 9:58 pm

7 Replies

20207 Views

Last post by goyo
Tue Jul 23, 2024 3:30 am
Cannot change OSDKADDR value

Last post by simozzer « Sun Mar 31, 2024 1:10 am
Replies: 2
by simozzer » Sat Mar 30, 2024 2:26 am

2 Replies

11844 Views

Last post by simozzer
Sun Mar 31, 2024 1:10 am
Trouble with saving data using 6502

Last post by simozzer « Tue Dec 19, 2023 10:43 pm
Replies: 12
by simozzer » Thu Dec 07, 2023 10:21 pm

12 Replies

22739 Views

Last post by simozzer
Tue Dec 19, 2023 10:43 pm
looking for a pixel flood fill routine

Last post by Dbug « Sun Nov 05, 2023 9:55 am
Replies: 51
by goyo » Wed Sep 01, 2021 1:11 pm
1

2

3

4
51 Replies

68012 Views

Last post by Dbug
Sun Nov 05, 2023 9:55 am
Fastest HIRES filling without page 0

Last post by Symoon « Fri Aug 04, 2023 7:42 am
Replies: 4
by Symoon » Thu Aug 03, 2023 9:22 pm

4 Replies

12890 Views

Last post by Symoon
Fri Aug 04, 2023 7:42 am
Syntax in MONASM

Last post by Chema « Tue Jun 13, 2023 7:50 am
Replies: 5
by Gliou » Fri Feb 17, 2023 10:11 pm

5 Replies

15586 Views

Last post by Chema
Tue Jun 13, 2023 7:50 am
How to code CLOAD"file" in assembler

Last post by Dbug « Tue Jan 24, 2023 10:06 am
Replies: 1
by coco.oric » Tue Jan 24, 2023 2:06 am

1 Replies

9523 Views

Last post by Dbug
Tue Jan 24, 2023 10:06 am
Teleass compilation...

Last post by damien « Wed Nov 02, 2022 9:39 pm
Replies: 2
by damien » Wed Nov 02, 2022 10:29 am

2 Replies

11372 Views

Last post by damien
Wed Nov 02, 2022 9:39 pm
XA for beginner: multipart TAP files?

Last post by Dbug « Sun Sep 25, 2022 1:21 pm
Replies: 3
by Symoon » Sun Sep 25, 2022 9:12 am

3 Replies

11142 Views

Last post by Dbug
Sun Sep 25, 2022 1:21 pm
XA: playing with tables

Last post by Symoon « Sun Aug 21, 2022 9:51 pm
Replies: 5
by Symoon » Sun Aug 21, 2022 1:50 pm

5 Replies

12473 Views

Last post by Symoon
Sun Aug 21, 2022 9:51 pm
Towards an onboard Oric Assembler/Editor Development environment

Last post by ibisum « Sat Aug 06, 2022 10:22 am
Replies: 12
by ibisum » Sun Jul 31, 2022 2:31 pm

12 Replies

16971 Views

Last post by ibisum
Sat Aug 06, 2022 10:22 am
XA or CA65 ?

Last post by Dbug « Sat Jul 30, 2022 1:27 pm
Replies: 20
by Symoon » Mon Jul 18, 2022 10:56 am
1

2
20 Replies

26139 Views

Last post by Dbug
Sat Jul 30, 2022 1:27 pm
XA vs. CA65 programming tips, tricks and more

Last post by iss « Mon Jul 18, 2022 8:51 pm
Replies: 1
by iss » Mon Jul 18, 2022 8:17 pm

1 Replies

9301 Views

Last post by iss
Mon Jul 18, 2022 8:51 pm
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

8933 Views

Last post by Dbug
Sun Jun 26, 2022 11:49 am
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

17703 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

17251 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

46969 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

30128 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

14644 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

18754 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

11561 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

19895 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

17862 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

19706 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
1

2
26 Replies

38756 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
1

2
25 Replies

37201 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

18189 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

15916 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

30229 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

28557 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

16478 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

21116 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

17600 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
1

2

3
33 Replies

85397 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

23740 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

24258 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

22864 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

25674 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

30839 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

40217 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

43119 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
1

2
23 Replies

72523 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

24790 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

27796 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

34038 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

25824 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

46769 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

36624 Views

Last post by ibisum
Mon May 11, 2015 9:51 am

New Topic

100 topics

Return to Board Index

Forum permissions

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum