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Posts Made By:
Olaf Barthel
Forum:
support.Apps
22 April 2024, 13:22
Replies:
5
AmigaDos wont show contents of Games directory?
Views:
352
Posted By
Olaf Barthel
AmigaDOS and its precursors would imitate what...
AmigaDOS and its precursors would imitate what came before, hence the "Dir" command which provides easy, but terse access to the contents of directories and volumes, and even features an interactive...
Forum:
support.Apps
12 April 2024, 15:20
Replies:
89
AmigaOS 3.2 performance vs 3.1
Views:
4,862
Posted By
Olaf Barthel
There is progress and there is learning to walk...
There is progress and there is learning to walk on broken glass and not minding the injuries, the loss of blood, the danger of infection and the pain...
Data structures succeed in shaping code...
Forum:
Coders. System
23 March 2024, 09:51
Replies:
70
RKRM - AmigaDOS work in progress
Views:
9,234
Posted By
Olaf Barthel
Fair enough, Ralph Babel's documentation on the...
Fair enough, Ralph Babel's documentation on the use of the global vector in the original "Das Amiga-Guru-Buch" (1989) already comes with a caution and "The Amiga Guru Book" (1993) only goes so far as...
Forum:
Coders. System
21 March 2024, 17:11
Replies:
70
RKRM - AmigaDOS work in progress
Views:
9,234
Posted By
Olaf Barthel
You know, it does not have to be covered in the...
You know, it does not have to be covered in the kind of detail which would be likely to lure the curious developers into giving the TRIPOS API layer a shot, and getting swallowed up by the darkness....
Forum:
Coders. Asm / Hardware
21 March 2024, 16:45
Replies:
19
Shift bitplanes 1 pixel
Views:
1,135
Posted By
Olaf Barthel
First determine what the budget for the operation...
First determine what the budget for the operation is. The budget not only includes how much time is spent for the operation to complete, but also for learning how to perform it, debug it and measure...
Forum:
Coders. Asm / Hardware
21 March 2024, 16:33
Replies:
19
Shift bitplanes 1 pixel
Views:
1,135
Posted By
Olaf Barthel
Hm... ScrollRaster() needs a RastPort (as the...
Hm... ScrollRaster() needs a RastPort (as the name implies), which is fine in most cases. You can even call it on the RastPort of a Screen, if there are no Windows open on it whose contents would be...
Forum:
request.Apps
18 March 2024, 13:42
Replies:
5
Looking for latest Aztec C 5.2d compiler
Views:
521
Posted By
Olaf Barthel
I bought Aztec 'C' 5.0 back in the day, with the...
I bought Aztec 'C' 5.0 back in the day, with the really fat manual, then the library source code, and applied all the patches as they became available (5.0a-5.0d, then 5.2a). As far as I know 5.2a...
Forum:
Coders. System
17 March 2024, 10:50
Replies:
7
free - but keep - memory pool
Views:
482
Posted By
Olaf Barthel
So what you need is really a bug fix, isn't it?
So what you need is really a bug fix, isn't it?
Forum:
Coders. System
16 March 2024, 12:18
Replies:
7
free - but keep - memory pool
Views:
482
Posted By
Olaf Barthel
Could be that memory pools are not the exact...
Could be that memory pools are not the exact solution you were looking for. But maybe they fit better than you expect them to if you reconsider what they can do for you, given their strengths.
The...
Forum:
Coders. System
11 March 2024, 08:14
Replies:
6
ScrollVPort called from VBlank interrupt
Views:
467
Posted By
Olaf Barthel
Back in the Kickstart 1.x days, it was common...
Back in the Kickstart 1.x days, it was common enough to call LoadRGB4() or SetRGB4() from interrupt code, e.g. for use with images that would use palette cycling. Sadly, this seemed to work so well...
Forum:
Coders. C/C++
08 March 2024, 09:33
Replies:
1,549
GCC 6.2 toolchain for AmigaOS 3
Views:
359,689
Posted By
Olaf Barthel
Careful about that __aligned keyword. The code...
Careful about that __aligned keyword. The code which needs it may have to be rewritten. Accidentally removing it through the preprocessor can have unforseen and really annoying consequences. The...
Forum:
Coders. C/C++
07 March 2024, 17:33
Replies:
1,549
GCC 6.2 toolchain for AmigaOS 3
Views:
359,689
Posted By
Olaf Barthel
Hey, progress after all :) Maybe there is a...
Hey, progress after all :)
Maybe there is a future for the NDK 3.2 R4 header files in the gcc distribution after all.
Forum:
Coders. C/C++
06 March 2024, 14:06
Replies:
1,549
GCC 6.2 toolchain for AmigaOS 3
Views:
359,689
Posted By
Olaf Barthel
That likely makes them part of AmigaOS NDK 3.2...
That likely makes them part of AmigaOS NDK 3.2 R3. The R4 header files should be dated early February 2022 (and we didn't manage to release R5 in 2023).
:great
Happy to whet your...
Forum:
Coders. C/C++
06 March 2024, 12:47
Replies:
1,549
GCC 6.2 toolchain for AmigaOS 3
Views:
359,689
Posted By
Olaf Barthel
Which version/release of the AmigaOS 3.2 NDK are...
Which version/release of the AmigaOS 3.2 NDK are you currently using, exactly? The most recent release is still AmigaDOS 3.2 NDK R4, with R5 still being in the works.
R5 features further interface...
Forum:
support.AmigaOS
21 February 2024, 11:19
Replies:
8
Outstanding OS3.2.2 bugs/issues
Views:
1,300
Posted By
Olaf Barthel
Sadly, there is no public bug tracker (or tracker...
Sadly, there is no public bug tracker (or tracker for enhancement requests) for the AmigaOS 3.1.4/3.2 versions. While this kind of thing is still common practice (it was in Commodore's days), it is...
Forum:
Coders. System
31 January 2024, 17:39
Replies:
7
Is graphics.library efficient enough for games?
Views:
790
Posted By
Olaf Barthel
Not as such, but you might not be wrong to assume...
Not as such, but you might not be wrong to assume that things will get harder, not easier, to accomplish if you turn off the motor of the car (interrupt servicing and handling), so to speak, as...
Forum:
Coders. System
31 January 2024, 14:00
Replies:
7
Is graphics.library efficient enough for games?
Views:
790
Posted By
Olaf Barthel
Speaking as somebody who, perhaps unwisely, wrote...
Speaking as somebody who, perhaps unwisely, wrote a commercial game in 1988/1989 which was published, yes, you can do this without running out of CPU or memory power and multitask at the same time....
Forum:
Coders. System
31 January 2024, 09:46
Replies:
59
Anyone know what would cause a crash in AmigaOS 3.X (from Cloanto's Amiga Forever)
Views:
2,968
Posted By
Olaf Barthel
The error, or rather the combined collection of...
The error, or rather the combined collection of errors, is likely found in the ClassAct and ReAction classes which you intend to make good use of.
We spent years (wish I was kidding, wish I hadn't...
Forum:
Coders. System
22 January 2024, 11:45
Replies:
21
How to use overlay hunks?
Views:
4,695
Posted By
Olaf Barthel
The overlay feature fell out of favour when...
The overlay feature fell out of favour when Amigas either shipped with more than 512 KBytes of memory, or could be expanded by adding memory plug-in cards (or something like the A590 for the Amiga...
Forum:
Coders. System
15 January 2024, 16:03
Replies:
17
Creating a file in RAM: sets IoErr
Views:
1,531
Posted By
Olaf Barthel
Definitely sounds a bit like it. The recent...
Definitely sounds a bit like it. The recent rework (ahem) by yours truly was performed with the goals to render the code more readable, more maintainable and more robust, with no new features added...
Forum:
Coders. System
06 January 2024, 15:00
Replies:
17
Creating a file in RAM: sets IoErr
Views:
1,531
Posted By
Olaf Barthel
I've been there before and the simple changes...
I've been there before and the simple changes required to work around or replace existing ram-handler code rarely stay simple. The number of bugs/side effects which survive the previous attempt to...
Forum:
Coders. System
06 January 2024, 13:43
Replies:
17
Creating a file in RAM: sets IoErr
Views:
1,531
Posted By
Olaf Barthel
The real problem is that "nobody" seems to read...
The real problem is that "nobody" seems to read the documentation, and with good reason. It tends to be unhelpful and incomplete. Even the exceptionally well-researched "The Amiga Guru book" has its...
Forum:
Coders. System
06 January 2024, 13:39
Replies:
17
Creating a file in RAM: sets IoErr
Views:
1,531
Posted By
Olaf Barthel
:banghead I already checked what it takes to...
:banghead
I already checked what it takes to make Result2 consistently come up with 0 if an operation succeeds. It makes ram-handler significantly larger (this has to go into every single packet...
Forum:
Coders. System
06 January 2024, 10:36
Replies:
17
Creating a file in RAM: sets IoErr
Views:
1,531
Posted By
Olaf Barthel
No, as far as I can tell. It is a by-product of...
No, as far as I can tell. It is a by-product of how the ram-handler implementation is designed, which focuses on code reuse in order to keep its size "manageable" (for some values of manageable,...
Forum:
Coders. General
30 December 2023, 15:43
Replies:
49
Has anyone ever reverse engineered narrator.device?
Views:
7,285
Posted By
Olaf Barthel
This documentation references the "Arpabet",...
This documentation references the "Arpabet", which is likely designed for English language speakers. As the means to pronounce words in a different language from English this may have merit, but just...
Forum:
Coders. General
29 December 2023, 10:49
Replies:
6
Amiga malloc() function
Views:
747
Posted By
Olaf Barthel
Why do you need to replace the malloc() function?...
Why do you need to replace the malloc() function? Which problem are you trying to solve?
As Samurai_Crow already mentioned, replacing the malloc() function by one of your own design will replace...
Forum:
Coders. C/C++
20 December 2023, 14:04
Replies:
50
Issue with graphics.h library?
Views:
7,041
Posted By
Olaf Barthel
I'm trying. If one struggles to explain...
I'm trying. If one struggles to explain something, one may not have understood it sufficiently well enough just yet. There is also the matter of making Amiga software development easier to get into...
Forum:
Coders. C/C++
19 December 2023, 08:11
Replies:
50
Issue with graphics.h library?
Views:
7,041
Posted By
Olaf Barthel
Yes, and it is not delivering on this promise yet...
Yes, and it is not delivering on this promise yet :(
Whenever you build a program for the Amiga, the compiler's runtime library also includes startup code which allows it to be launched from the...
Forum:
Coders. C/C++
16 December 2023, 17:36
Replies:
50
Issue with graphics.h library?
Views:
7,041
Posted By
Olaf Barthel
I am sorry for asking this question, but why...
I am sorry for asking this question, but why exactly are you using the 1.3 variant of the operating system header files which were generated from the NDK 3.9 header files? Which problem would they,...
Forum:
Coders. Asm / Hardware
14 December 2023, 11:31
Replies:
7
Check if DF1 is present/attatched
Views:
912
Posted By
Olaf Barthel
This used to be common knowledge on how the user...
This used to be common knowledge on how the user interface of the Amiga works, which extends to the Workbench and how disks as well as CD-ROMs and hard disks are accessed by the user and the software...
Forum:
Coders. System
24 November 2023, 08:55
Replies:
35
Challenge: AmigaOS command to start executables.
Views:
4,184
Posted By
Olaf Barthel
And it's written in Python, which would add the...
And it's written in Python, which would add the additional burden of having to run it on an Amiga Python interpreter, which then in turn would emulate the 68k CPU code, too. Would have to be a Python...
Forum:
Coders. System
24 November 2023, 08:54
Replies:
35
Challenge: AmigaOS command to start executables.
Views:
4,184
Posted By
Olaf Barthel
That 'C' library likely calls either...
That 'C' library likely calls either dos.library/Execute or dos.library/SystemTagList anyway. Not much to be gained here :sad
Forum:
Coders. System
24 November 2023, 08:52
Replies:
35
Challenge: AmigaOS command to start executables.
Views:
4,184
Posted By
Olaf Barthel
Hey, you're breaking my heart. I was ready to...
Hey, you're breaking my heart. I was ready to spring (or maybe stumble) into action and to deliver the "Manhattan Project" of obscure AmigaDOS intrinsics, including support for overlays and the...
Forum:
Coders. System
23 November 2023, 09:02
Replies:
35
Challenge: AmigaOS command to start executables.
Views:
4,184
Posted By
Olaf Barthel
Challenge accepted :) According to your...
Challenge accepted :)
According to your requirements, every AmigaDOS binary file should be loadable and executable, regardless of which operating system it was originally intended to be loaded and...
Forum:
Coders. System
19 November 2023, 09:51
Replies:
16
Uninteruptable mouse movement events
Views:
1,142
Posted By
Olaf Barthel
Tricky. The raw mouse events which pass through...
Tricky. The raw mouse events which pass through the input handler contain no mouse position information, just movement delta information.
This has to be translated into the respective screen...
Forum:
Coders. System
17 November 2023, 16:06
Replies:
70
RKRM - AmigaDOS work in progress
Views:
9,234
Posted By
Olaf Barthel
That's why I "hacked" the Wikipedia entry for the...
That's why I "hacked" the Wikipedia entry for the Amiga FastFileSystem to link to https://wiki.amigaos.net/wiki/DCFS_and_LNFS_Low_Level_Data_Structures
That was back in 2017 and what is documented...
Forum:
Coders. System
17 November 2023, 15:52
Replies:
2
WorkbenchControlA() - Issue getting selected icons information with just .info files
Views:
555
Posted By
Olaf Barthel
Um, sorry for the late answer: this is a mix...
Um, sorry for the late answer: this is a mix between a feature and a bug.
The 'C' API produces only those entries for which there is a file, drawer or link present which also happens to be...
Forum:
Coders. System
17 November 2023, 15:37
Replies:
1
Full source code for AmigaOS 3.2 trackfile.device and DAControl is available
Views:
542
Posted By
Olaf Barthel
Full source code for AmigaOS 3.2 trackfile.device and DAControl is available
Hello everyone - in case you missed it (you might be in the majority), there's a fully documented and working example of how you may write an Amiga disk device driver in the NDK 3.2. We use it in...
Forum:
Coders. C/C++
16 November 2023, 14:28
Replies:
9
Where did I see that non-recursive directory handling c-example?
Views:
1,198
Posted By
Olaf Barthel
Here you are - This was written for Kickstart 2.x...
Here you are - This was written for Kickstart 2.x or better, but the traversal method will work just fine on Kickstart 1.x (if you remove/replace the Kickstart 2.x-specific functions).
Forum:
Coders. C/C++
16 November 2023, 11:52
Replies:
9
Where did I see that non-recursive directory handling c-example?
Views:
1,198
Posted By
Olaf Barthel
While I don't remember where you might have seen...
While I don't remember where you might have seen it, I have some charmingly overengineered 'C' example code which demonstrates how to do this, in case you are interested. Are you? :)
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