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Forum: Coders. Asm / Hardware 16 September 2020, 10:31
Replies: 39
Views: 2,297
Posted By Thomas Richter
If the problem is with a 68040: Is this...

If the problem is with a 68040: Is this configured correctly? The custom chip memory area must, absolutely must be set to cache inhibit serialized. The 68040 has a "push queue" in which it stores...
Forum: Coders. Asm / Hardware 15 September 2020, 21:37
Replies: 13
Views: 2,389
Posted By Thomas Richter
mathieeesingbas in 3.1 was a problem case because...

mathieeesingbas in 3.1 was a problem case because CBM run out of ROM space in 3.1. That was fixed in 3.1.4, and it is the only library with this problem. It is a design bug, and one that has been...
Forum: Coders. Asm / Hardware 15 September 2020, 16:26
Replies: 13
Views: 2,389
Posted By Thomas Richter
If you use the CBM libraries, there is one...

If you use the CBM libraries, there is one library for all cases. FPU, no FPU, 68020, 68040.... all just one code. Move from 68020 with no FPU to 68060? Just works.




It does. A system with...
Forum: Coders. Asm / Hardware 15 September 2020, 08:38
Replies: 13
Views: 2,389
Posted By Thomas Richter
CBM provides one set of math libraries, with all...

CBM provides one set of math libraries, with all code integrated into one library for the ease of handling. They did this so people cannot install things wrongly. Just put the math libraries in place...
Forum: Coders. Asm / Hardware 14 September 2020, 18:14
Replies: 57
Views: 2,185
Posted By Thomas Richter
The discussion reminds me of a sketch of three...

The discussion reminds me of a sketch of three persons in a cable car, one of them very anxious:

"Well, what if operator falls asleep?" - "There is another break you can pull."

"Well, what if...
Forum: Coders. Asm / Hardware 14 September 2020, 17:24
Replies: 57
Views: 2,185
Posted By Thomas Richter
Look, the whole discussion is pathetic. This is...

Look, the whole discussion is pathetic. This is such an unimportant irrelevant issue... there are so many solutions to avoid it. Use another register. Return results in registers in first place. Use...
Forum: request.Apps 11 September 2020, 22:36
Replies: 6
Views: 389
Posted By Thomas Richter
Yes: http://aminet.net/util/cli/SED.lha For...

Yes: http://aminet.net/util/cli/SED.lha For searching (grep and find), use C:Search.
Forum: support.Other 08 September 2020, 19:24
Replies: 13
Views: 391
Posted By Thomas Richter
The best versions that match the system best are...

The best versions that match the system best are those that came with the system. (-:


In many, but not all systems, the corresponding newer setpatch version also includes all patches and fixes...
Forum: Coders. Asm / Hardware 08 September 2020, 17:17
Replies: 57
Views: 2,185
Posted By Thomas Richter
But does a needless memory read and hence...

But does a needless memory read and hence requires a bus cycle to potentially slow memory. Seriously, compare that to a tst.l <return register> (probably in cache), which does not require to read...
Forum: Coders. Tutorials 08 September 2020, 16:09
Replies: 8
Views: 347
Posted By Thomas Richter
If you have no division instruction, the same way...

If you have no division instruction, the same way as in BCD, except that each digit can be either 0 or 1, which simplifies continuous subtraction to a single compare. If you do, well, use the...
Forum: Coders. Tutorials 08 September 2020, 16:07
Replies: 8
Views: 347
Posted By Thomas Richter
:50 is simple enough (already answered by...

:50 is simple enough (already answered by others), but general multiplication or division in BCD is slow, in general. To multply, use the pen-and-paper algorithm of multiplying digit by digit, then...
Forum: Coders. Asm / Hardware 08 September 2020, 15:54
Replies: 57
Views: 2,185
Posted By Thomas Richter
Yes, you better do. The problem is that...

Yes, you better do. The problem is that "secondary return codes" do not scale. As soon as the program and its functions grow larger, it becomes quite easy (I speak from experience) to forget setting...
Forum: Coders. Asm / Hardware 08 September 2020, 14:21
Replies: 57
Views: 2,185
Posted By Thomas Richter
Frankly, I suggest to change the coding style. I...

Frankly, I suggest to change the coding style. I know returning conditions in ccr was kind of iconic in the 8-bit ages because there were not so many registers left, and when I moved to 68K, I tried...
Forum: support.Other 08 September 2020, 12:37
Replies: 13
Views: 391
Posted By Thomas Richter
SetPatch options as in "which versions of...

SetPatch options as in "which versions of SetPatch do I have as an option" or as in "which command line option does SetPatch recognize"?
Forum: support.Hardware 08 September 2020, 12:35
Replies: 13
Views: 707
Posted By Thomas Richter
Also only part of the story. If you want to...

Also only part of the story. If you want to write-protect the mapped ROM, then the host-specific solutions will not allow that. Also, if you loaded modules as part of an operating system update...
Forum: support.Hardware 08 September 2020, 09:15
Replies: 42
Views: 1,991
Posted By Thomas Richter
First, it has nothing to do with LoadModule or...

First, it has nothing to do with LoadModule or not. There is a kickstart ROM module in the 3.1.4 ROM that, once opened, attempts to locate the mentioned libraries (icon and workbench) from harddisk....
Forum: support.Hardware 08 September 2020, 09:13
Replies: 42
Views: 1,991
Posted By Thomas Richter
Because those people are wrong. The library has...

Because those people are wrong. The library has to be in LIBS:, or on your harddisk on LIBS:, or any other medium in LIBS: for that matter. Yes, if you disable your harddisk, it will not find it, of...
Forum: support.Hardware 07 September 2020, 20:44
Replies: 13
Views: 707
Posted By Thomas Richter
If there are problems with the installer, let me...

If there are problems with the installer, let me know. It should be really easy - unless you install as "Expert", then you should be one.
Forum: Coders. Asm / Hardware 04 September 2020, 11:10
Replies: 39
Views: 2,297
Posted By Thomas Richter
Many many drawbacks with this flag. Note that the...

Many many drawbacks with this flag. Note that the CPU will also no longer be available for interrupts if the blitter nasty flag is on as the autovectors are by default in chip mem. Avoid this flag,...
Forum: News 02 September 2020, 17:08
Replies: 89
Views: 3,563
Posted By Thomas Richter
In terms of completeness of the implementation -...

In terms of completeness of the implementation - I don't think so. We did have trouble with PFS during 3.1.4 testing, recursive delete did not quite work. I do not know whether this has been fixed...
Forum: News 02 September 2020, 17:05
Replies: 89
Views: 3,563
Posted By Thomas Richter
Not quite that simple. There is some...

Not quite that simple. There is some administration overhead for each buffer, thus a buffer for a 512 block device requires somewhat more than 512 bytes. I forgot how much, though. Couple of bytes.
Forum: News 02 September 2020, 15:16
Replies: 89
Views: 3,563
Posted By Thomas Richter
I don't care what you mind. The above is a...

I don't care what you mind. The above is a general requirement for any file system and not specific to FFS.

I already said that HDToolBox takes care of this *now*, but it did not back then...
Forum: News 02 September 2020, 15:07
Replies: 89
Views: 3,563
Posted By Thomas Richter
Actually, that is due to another difference, and...

Actually, that is due to another difference, and that is "block alignment". Modern media, both HDs and flash media, have often an internal sector size of 4K rather than 512 Bytes. Thus, if the file...
Forum: News 02 September 2020, 12:49
Replies: 89
Views: 3,563
Posted By Thomas Richter
Note that the buffers for FFS do something...

Note that the buffers for FFS do something different than you expect, so what is much more interesting is the "Mask" value. The buffers only buffer metadata (directory adminstiration information),...
Forum: News 29 August 2020, 19:23
Replies: 89
Views: 3,563
Posted By Thomas Richter
What is "correct"? Download "Devices" from...

What is "correct"? Download "Devices" from Aminet, and check. Note that the HDToolBox uses by default(!) MEMF_CHIP because that is the only value that is workable for all boards. The FFS version does...
Forum: News 29 August 2020, 18:42
Replies: 89
Views: 3,563
Posted By Thomas Richter
There are so many things to check out for....

There are so many things to check out for. BufMemType, MaxTransfer, BlockSize... Which commands are used in the startup-sequence, what they do... If you just copy a file from or to an unfragmented...
Forum: News 28 August 2020, 12:02
Replies: 89
Views: 3,563
Posted By Thomas Richter
First, you miss an "h" there. However, this...

First, you miss an "h" there.

However, this is not about "technical features" of a filing system, but rather its real-time performance. However, what "performance" means depends on the...
Forum: News 28 August 2020, 07:59
Replies: 89
Views: 3,563
Posted By Thomas Richter
Before you "bust" something, it becomes necessary...

Before you "bust" something, it becomes necessary to understand the problem. This is not covered by "how much data is transfered if I write a file", because the limitation of that is easily computed:...
Forum: Coders. Asm / Hardware 25 August 2020, 08:01
Replies: 18
Views: 1,141
Posted By Thomas Richter
Scanning the memory list and depending on its...

Scanning the memory list and depending on its implementation is so common that it would be very hard to change without major side effects. Thus, I don't think these lists will go away any time soon....
Forum: Amiga scene 23 August 2020, 22:08
Replies: 870
Views: 105,874
Posted By Thomas Richter
Well, this sounds more like a market for a piece...

Well, this sounds more like a market for a piece of hardware, consisting of a flash-ROM with an additional "switcher" mechanism on top that allows you to load several kickstarts into the same system,...
Forum: Amiga scene 23 August 2020, 19:26
Replies: 870
Views: 105,874
Posted By Thomas Richter
Look, the usefulness of a piece of software...

Look, the usefulness of a piece of software depends on its "use cases". So tell me, who wants to use such an operating system, and what is the target market? Which competitors operate in the same...
Forum: Amiga scene 23 August 2020, 15:09
Replies: 870
Views: 105,874
Posted By Thomas Richter
I'm not so foolish to give a release date at this...

I'm not so foolish to give a release date at this time, and to make announcements of things that are not yet working to my full satisfaction. Things will be ready when they are ready. However, to...
Forum: Amiga scene 22 August 2020, 20:47
Replies: 870
Views: 105,874
Posted By Thomas Richter
Yes, but... There are a couple of restrictions...

Yes, but... There are a couple of restrictions due to the VGA hardware RTG cards are based on. First, there needs to be enough video memory available to keep both front and back screen on the board....
Forum: Coders. Asm / Hardware 21 August 2020, 08:57
Replies: 39
Views: 2,297
Posted By Thomas Richter
The correct way is to call WaitBlit() of the...

The correct way is to call WaitBlit() of the graphics library. The problem with the blitter is that it has a couple of issues, depending on the machine, where it does not yet indicate that the blit...
Forum: Amiga scene 20 August 2020, 19:50
Replies: 870
Views: 105,874
Posted By Thomas Richter
Yes, early in the development of 3.1.4. ...

Yes, early in the development of 3.1.4.



Yes.



That's what I see.
Forum: Amiga scene 20 August 2020, 09:00
Replies: 870
Views: 105,874
Posted By Thomas Richter
Not that I know of in layers V45. Why...

Not that I know of in layers V45.


Why should installation of clipping regions blit anything around? It only does that if the layer is SMART, and hidden, and the hidden cliprects need undergo...
Forum: Amiga scene 19 August 2020, 19:52
Replies: 870
Views: 105,874
Posted By Thomas Richter
Thanks for correcting this. Indeed, window...

Thanks for correcting this. Indeed, window decorations are a separate window indeed.



This sounds like fixing the problem at the wrong spot. It is not the rastport that is resized as...
Forum: Coders. Asm / Hardware 19 August 2020, 16:43
Replies: 6
Views: 591
Posted By Thomas Richter
This may make your machine unusable or unstable...

This may make your machine unusable or unstable as certain hardware may require or generate periodic interrupts. Also note that not all interrupts are necessarily routed through PAULA.




Not...
Forum: Amiga scene 19 August 2020, 13:18
Replies: 870
Views: 105,874
Posted By Thomas Richter
Well, at least the naming of "GimmeZeroZero" is...

Well, at least the naming of "GimmeZeroZero" is logical, even though it is slang. But I never understood the actual implementation of this feature, namely to give the rendering region of the window a...
Forum: Coders. Asm / Hardware 19 August 2020, 10:24
Replies: 4
Views: 503
Posted By Thomas Richter
This wouldn't work. The copper cannot...

This wouldn't work. The copper cannot instantaneously change two (or more) colors at once. Reading a command and executing a command takes some time, and hence takes some space on the screen.
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