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Forum: Coders. C/C++ 19 May 2020, 04:04
Replies: 16
Views: 1,552
Posted By ReadOnlyCat
Looking at the Docker files, this seems to only...

Looking at the Docker files, this seems to only run on Linux though right?



I am currently converting a Sublime Text project into a CLion one (Sublime is nice but lacks the smarts of CLion) so...
Forum: Retrogaming General Discussion 27 April 2020, 05:40
Replies: 80
Views: 7,531
Posted By ReadOnlyCat
I will ask him which comments he is referring to....

I will ask him which comments he is referring to.
He is certainly not referring to me or Rafael Lima since we comment regularly about the Amiga and he usually responds favorably so clearly he is...
Forum: Retrogaming General Discussion 27 April 2020, 05:16
Replies: 80
Views: 7,531
Posted By ReadOnlyCat
I do not feel personally attacked by his tone but...

I do not feel personally attacked by his tone but I agree that he could be more diplomatic for those who are.
But you know what guys, you could just comment about that in his videos.

A little...
Forum: Retrogaming General Discussion 27 April 2020, 04:53
Replies: 318
Views: 19,222
Posted By ReadOnlyCat
From the NXP manual: MULS/MULU 16x16 ->...

From the NXP manual:

MULS/MULU 16x16 -> 32 | 32x32 -> 32 | 32x32 -> 64


so, yup that is possible. ;)
Forum: Retrogaming General Discussion 27 April 2020, 04:39
Replies: 318
Views: 19,222
Posted By ReadOnlyCat
The 030 uses a barrel shifter so shifting is done...

The 030 uses a barrel shifter so shifting is done at fixed cost.
But I was talking about the number of cycles for mul. :D



Well, sure but that does not help us figure out what a 030 @ 50MHz...
Forum: Coders. C/C++ 27 April 2020, 03:56
Replies: 8
Views: 843
Posted By ReadOnlyCat
Thinking about it, it should be possible to use...

Thinking about it, it should be possible to use the following heuristic to determine the format of an existing profile.

1- look for the string "main" in the file.
2- once found, we know that the...
Forum: Coders. C/C++ 27 April 2020, 03:38
Replies: 8
Views: 843
Posted By ReadOnlyCat
I was actually miscalculating the remainder of...

I was actually miscalculating the remainder of struct profdata which was the cause of the multiple spurious entries above. I fixed that and the final result with endianness corrected now looks as it...
Forum: Coders. C/C++ 27 April 2020, 03:08
Replies: 8
Views: 843
Posted By ReadOnlyCat
Ah, indeed macOS is x64 so definitely little...

Ah, indeed macOS is x64 so definitely little endian and LP64 to boot.

I hacked vprof's sources to use uint32_t members in struct profdata so the program now assumes the incoming data is always 32...
Forum: Coders. C/C++ 26 April 2020, 22:45
Replies: 8
Views: 843
Posted By ReadOnlyCat
I am using 0.9g (from...

I am using 0.9g (from http://sun.hasenbraten.de/vbcc/index.php?view=main) and vprof seems to not like the output format of mon.out.

The Amiga executable was compiled with:


vc +aos68k -prof...
Forum: Amiga scene 26 April 2020, 21:46
Replies: 45
Views: 2,402
Posted By ReadOnlyCat
Accuracy and speed are quasi orthogonal concerns....

Accuracy and speed are quasi orthogonal concerns.
Classic emulator designs have struggled with speed whenever they tried to be address accuracy because they were not design to take this constraint...
Forum: Amiga scene 26 April 2020, 21:33
Replies: 45
Views: 2,402
Posted By ReadOnlyCat
I actually am relatively confident that accurate...

I actually am relatively confident that accurate full speed emulation of <some> 8 bit machines is possible on the A500.

This may require more than 512KB though since a large amount of memory would...
Forum: Retrogaming General Discussion 26 April 2020, 21:20
Replies: 80
Views: 7,531
Posted By ReadOnlyCat
The community he refers to is the one of the...

The community he refers to is the one of the 80s-90s with the ST-Amiga "wars" raging when we (and I say "we" because I was one of them) were claiming the Amiga being the most powerful machine (which...
Forum: support.Hardware 26 April 2020, 20:30
Replies: 17
Views: 3,661
Posted By ReadOnlyCat
You are right of course, the code was very likely...

You are right of course, the code was very likely tightly verified and its task is simple enough that the odds of there being bugs are super low.

Still, I love the idea that there may be bugs that...
Forum: Retrogaming General Discussion 26 April 2020, 20:10
Replies: 318
Views: 19,222
Posted By ReadOnlyCat
Damn, we need to test it then. ;) ...

Damn, we need to test it then. ;)



Nice, could you also do test for specific ranges of values so that we can have a grasp of how bit count affects multiplication time (if multiplication time is...
Forum: Coders. C/C++ 26 April 2020, 19:33
Replies: 8
Views: 843
Posted By ReadOnlyCat
Oh, wow, this is just perfect. As usual,...

Oh, wow, this is just perfect.

As usual, thanks for your answer Phx!
Take care.
Forum: support.Apps 25 April 2020, 07:53
Replies: 17
Views: 1,048
Posted By ReadOnlyCat
Thanks! Hope you are as well. ;) My,...

Thanks! Hope you are as well. ;)



My, this is a pretty hefty requirement, are there any emulators which give good results with a slower CPU?
Forum: Retrogaming General Discussion 25 April 2020, 07:18
Replies: 318
Views: 19,222
Posted By ReadOnlyCat
Excellent idea. Although 16 MB seems quite on...

Excellent idea.
Although 16 MB seems quite on the high side. Are you counting animations?

On VRally-2 PS2 we had about 400 triangles for the cars at the highest quality LOD. Although it is true...
Forum: Coders. C/C++ 25 April 2020, 06:16
Replies: 8
Views: 843
Posted By ReadOnlyCat
VBCC Profiling options ?

Hello there,

VBCC seems to have support for profiling (as its doc indicates: http://phoenix.owl.de/vbcc/docs/vbcc.pdf) but the documentation section on profiling unashamedly states:


14.9.13...
Forum: Retrogaming General Discussion 24 April 2020, 08:19
Replies: 318
Views: 19,222
Posted By ReadOnlyCat
You may very well be right. Although I suspect...

You may very well be right.
Although I suspect the Blitter could still be useful to do some menial tasks in the background while the CPU is busy with non-3D stuff.



I don't know that building...
Forum: support.Hardware 22 April 2020, 03:29
Replies: 1,182
Views: 434,203
Posted By ReadOnlyCat
Pure peroxide is a dangerous explosive liquid and...

Pure peroxide is a dangerous explosive liquid and is rarely available in mainstream shops and although it can be obtained in speciality shops you usually have to leave a proof of identity and address...
Forum: Retrogaming General Discussion 22 April 2020, 03:19
Replies: 80
Views: 7,531
Posted By ReadOnlyCat
Damn, you said it more eloquently and concisely...

Damn, you said it more eloquently and concisely than I did in almost a full page.

Thank you. ;)
Forum: Retrogaming General Discussion 22 April 2020, 03:11
Replies: 80
Views: 7,531
Posted By ReadOnlyCat
Well, I am as much of an Amiga fan as any other...

Well, I am as much of an Amiga fan as any other EAB dweller and I completely agree with Mark (the author of BOTP).

As you pointed out, his gripe is not with the Amiga but with the fanboyism that...
Forum: support.Hardware 22 April 2020, 02:53
Replies: 17
Views: 3,661
Posted By ReadOnlyCat
I have no doubt this was common knowledge but it...

I have no doubt this was common knowledge but it was not to this kitten until I researched A500 keyboards a few days ago. ;)



Who knows how many bugs lurk in that ROM?
Unless this is known, we...
Forum: Retrogaming General Discussion 22 April 2020, 02:30
Replies: 318
Views: 19,222
Posted By ReadOnlyCat
If you are willing to limit yourself to a 40 x...

If you are willing to limit yourself to a 40 x 256 pixels resolution then even OCS models have a 4096 colors chunky mode available (using the Copper). ;)

(Note: I am only slightly jesting.)


...
Forum: Coders. Blitz Basic 17 April 2020, 04:25
Replies: 56
Views: 2,587
Posted By ReadOnlyCat
Great effort!

Great effort!
Forum: Retrogaming General Discussion 17 April 2020, 04:07
Replies: 318
Views: 19,222
Posted By ReadOnlyCat
Demos are not a good example of what the machine...

Demos are not a good example of what the machine can do:
- not interactive
- lots of precaculated content
- 100% of the CPU + Blitter available for rendering

A game:
- reacts to user input and...
Forum: Coders. General 17 April 2020, 03:15
Replies: 12
Views: 1,571
Posted By ReadOnlyCat
I actually think Olle is referring to regular...

I actually think Olle is referring to regular 040, 060 CPUs:



The answer is "yes" for some tasks, and "no" for others. ;)

It is true that the 040 and 060 outperform the Blitter at its own...
Forum: support.Hardware 16 April 2020, 06:51
Replies: 17
Views: 3,661
Posted By ReadOnlyCat
Thread, rise from your grave! While...

Thread, rise from your grave!



While tinkering with A500/A600 keyboard schematics and looking for official datasheets for the MOS 6570 keyboard controller I ended up on a post on the...
Forum: support.Hardware 16 April 2020, 03:54
Replies: 1
Views: 370
Posted By ReadOnlyCat
Does the Big Book of Amiga Hardware need donations?

Hey there,
I hope you are all healthy and alive. ;)

This is not really a support request but I was not too sure of the forum to post this to so mods should not hesitate to move it to the...
Forum: Coders. Asm / Hardware 13 April 2020, 00:57
Replies: 16
Views: 8,074
Posted By ReadOnlyCat
You are absolutely correct. I have fixed...

You are absolutely correct.

I have fixed that and while I was at it renamed the 6570 pins to their proper MOS names and added the usage labels at the wire/pin junctions instead. Also renamed a few...
Forum: Coders. Asm / Hardware 12 April 2020, 21:16
Replies: 16
Views: 8,074
Posted By ReadOnlyCat
For those who may be interested, I have updated...

For those who may be interested, I have updated the schematics a little bit:


Updated to Kicad5 (this converted internal library references to global ones).
Replaced the existing connector...
Forum: Retrogaming General Discussion 06 June 2019, 03:33
Replies: 277
Views: 18,953
Posted By ReadOnlyCat
This looks quite nice! The Ninja Spirit...

This looks quite nice! The Ninja Spirit background indeed lends itself well to the sprite approach.



No doubt. ;)
You could also disable the parts of the sprite background which are not...
Forum: Coders. Asm / Hardware 06 June 2019, 03:21
Replies: 30
Views: 4,367
Posted By ReadOnlyCat
Hum, nifty (using the two copper lists for...

Hum, nifty (using the two copper lists for different tasks).
If I understand correctly, Copper1 waits on scanlines and changes colors then switches to Copper2 which waits on Blitter Finished but how...
Forum: Coders. General 06 June 2019, 03:07
Replies: 152
Views: 13,243
Posted By ReadOnlyCat
Frankly, I think these kittens should be whipped...

Frankly, I think these kittens should be whipped until they buy a proper modern controller rather than suffer with these stupid one button ones.
There was no reason to limit oneself to one button...
Forum: Coders. Asm / Hardware 06 June 2019, 02:45
Replies: 99
Views: 8,262
Posted By ReadOnlyCat
;) Obviously, one should only remove the...

;)
Obviously, one should only remove the unnecessary collision tests.



(yup, clearly not hierarchical, not sure why I categorized it as such :confused)
That does not surprise me, grids are...
Forum: support.Hardware 06 June 2019, 02:35
Replies: 1,182
Views: 434,203
Posted By ReadOnlyCat
I have a few yellowed and damaged Amiga cases...

I have a few yellowed and damaged Amiga cases that I can test the sun-whitening method on, will do so when I find them. ;)



Any picture with natural light is indeed by definition to suffer from...
Forum: Retrogaming General Discussion 06 June 2019, 02:28
Replies: 282
Views: 38,824
Posted By ReadOnlyCat
This is actually not so rare: a few games scroll...

This is actually not so rare: a few games scroll and move sprites at 50Hz but redraw Blitter objects at 25Hz.

Assassin from Team 17 does that for example...
Forum: support.Hardware 06 June 2019, 02:12
Replies: 7
Views: 990
Posted By ReadOnlyCat
Thanks, I had since indeed already purchased...

Thanks, I had since indeed already purchased replacement switches which work great. ;)
Forum: New to Emulation or Amiga scene 06 June 2019, 01:49
Replies: 12
Views: 1,898
Posted By ReadOnlyCat
Are you sure? I use mine with a straight...

Are you sure? I use mine with a straight inverter, no wires crossed and it works just fine.

For reference, this is the one I got:...
Forum: Retrogaming General Discussion 06 June 2019, 01:38
Replies: 32
Views: 1,428
Posted By ReadOnlyCat
There is no reason for the serial link to slow...

There is no reason for the serial link to slow down frame rate.

The only data to transmit between machines are essentially controller state and some game state every few frames and that should...
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