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Forum: support.Hardware 19 April 2020, 19:36
Replies: 1
Views: 441
Posted By TCH
Is it possible to change the floppy's bitrate?

As the title says, is it possible, to change the default transfer rate (253360 bps) of the floppy devices? For example, if i put an 5.25' floppy into the machine, is it possible to set it to exactly...
Forum: Coders. General 02 April 2020, 18:13
Replies: 14
Views: 1,593
Posted By TCH
Thanks, i'll check them.

Thanks, i'll check them.
Forum: support.Amiga Forever 23 March 2020, 18:39
Replies: 6
Views: 1,830
Posted By TCH
It's working flawlessly with 19200 baud. However...

It's working flawlessly with 19200 baud. However during experimenting, i rewired things, because i had no idea what was wrong. Now it's a PC-PC (DB9-DB9) serial cable plus a DB9-DB25 adaptor on the...
Forum: support.Amiga Forever 23 March 2020, 17:19
Replies: 6
Views: 1,830
Posted By TCH
Okay, solved it. Somewhy the system recognized...

Okay, solved it. Somewhy the system recognized the two serial ports in reverse order and port A became ttyS1 and port B ended up as ttyS0.
Forum: support.Amiga Forever 23 March 2020, 11:44
Replies: 6
Views: 1,830
Posted By TCH
Linux is actually not important, it could be BSD,...

Linux is actually not important, it could be BSD, Solaris, OSX or whatever, even windows. What matters, is that i'm trying to set up a simple nullmodem connection between the two machines to...
Forum: support.Amiga Forever 22 March 2020, 20:08
Replies: 6
Views: 1,830
Posted By TCH
serial communication between Amiga and PC

I'm trying to set up a nullmodem connection between my A500+ and my Linux PC. I've built a cable with this wiring:
http://www.amigaforever.com/gfx/null-modem/wiring_9-25.gif
I've double checked the...
Forum: Coders. General 07 March 2020, 16:20
Replies: 4
Views: 661
Posted By TCH
Okay, it seems to work, but some other questions...

Okay, it seems to work, but some other questions have emerged.

deimos' suggestion about setting ex and ey to 0 was correct, but giving ez the value of 500 yielded positionally correct but...
Forum: support.Other 06 March 2020, 13:39
Replies: 4
Views: 758
Posted By TCH
There are external mathffp.library files on...

There are external mathffp.library files on Aminet and other places. Before that, i never saw this file, it's not on any of the Workbench disks, so i thought that i have WB disks which lacks some...
Forum: support.Other 05 March 2020, 23:47
Replies: 4
Views: 758
Posted By TCH
I see, so the external mathffp.library is an...

I see, so the external mathffp.library is an update. Thank you.
Forum: support.Other 05 March 2020, 22:57
Replies: 4
Views: 758
Posted By TCH
In which WB was mathffp.library introduced?

(I did not find a "support.Workbench" or "support.AmigaOS" category so i post it there.)

I've checked my WB disks from 1.2 to 3.1 and i have not found mathffp.library on either of them. Is it a...
Forum: Coders. General 05 March 2020, 18:39
Replies: 4
Views: 661
Posted By TCH
DOH! Thanks guys. In the original function which...

DOH! Thanks guys. In the original function which held all the parts it was set, but i missed this, when i splitted it for tests. Warnings were enabled, but not with -Wall, i switched to that.
Forum: Coders. General 05 March 2020, 16:58
Replies: 4
Views: 661
Posted By TCH
Polygon transformation problem

I just begun experimenting with vertorgraphics and i'm trying to transform a 3D polygon into a 2D one, but i get zeros for all transformed coordinates. I implemented the matrixless version of the...
Forum: Coders. General 02 March 2020, 12:36
Replies: 14
Views: 1,593
Posted By TCH
Thanks. I'll start with 500 and then i'll see.

Thanks. I'll start with 500 and then i'll see.
Forum: Coders. General 02 March 2020, 11:28
Replies: 14
Views: 1,593
Posted By TCH
Even if i implement the matrix version, i still...

Even if i implement the matrix version, i still have no idea what to write into ez when i calculate the projected point's coordinates. You say, it's 500.0?
Forum: Coders. General 01 March 2020, 22:43
Replies: 14
Views: 1,593
Posted By TCH
So, you're saying i should set ez to 500.0?Okay,...

So, you're saying i should set ez to 500.0?Okay, now i am confused. How can my eye be the camera? The camera supposed to be a point inside the vectorspace which symbolise my eye's imaginary position;...
Forum: Coders. General 01 March 2020, 20:50
Replies: 14
Views: 1,593
Posted By TCH
Maybe, but i already went for alway convex...

Maybe, but i already went for alway convex polygons.No, of course not, it's C. Assembly will be used when it's working and the optimization will come into the picture. But until then, a lot of work...
Forum: Coders. General 01 March 2020, 12:02
Replies: 14
Views: 1,593
Posted By TCH
Experimenting with filled vectorgraphics.Thanks....

Experimenting with filled vectorgraphics.Thanks. In the meantime i've concluded that the best is if i use only convex polygons.Yep, in the meantime i've come to this conclusion too.Exactly, until...
Forum: Coders. General 24 February 2020, 20:40
Replies: 19
Views: 2,663
Posted By TCH
Perhaps you can use my image converter?...

Perhaps you can use my image converter? (http://bgafc.t-hosting.hu/prgv.php?p=2)
If you have a palette which you want to convert into EHB, then you can just save an image with it and convert it with...
Forum: Coders. General 24 February 2020, 20:33
Replies: 14
Views: 1,593
Posted By TCH
Drawing polygons: use only triangles or use bigger ones, splitting them if needed?

Out of theoretical curiosity, which would be the smarter thing?

If we only use triangles, they always will be convex polygons, so we can just simply get the horizontal coordinates of the two edges...
Forum: Coders. General 01 December 2019, 19:24
Replies: 106
Views: 5,413
Posted By TCH
Why would i do floppy swaping between them, when...

Why would i do floppy swaping between them, when i have a simple transfer program for parallel port? Besides i do not have a PC with floppy anymore.
Forum: Coders. General 01 December 2019, 13:51
Replies: 106
Views: 5,413
Posted By TCH
@roondar: Perhaps the problem lies in that i...

@roondar:
Perhaps the problem lies in that i run only once the measured code, instead running it in a cycle. But to do that, i'll have to rewrite the C part, either to be encapsulated in a...
Forum: Coders. General 30 November 2019, 21:28
Replies: 2
Views: 616
Posted By TCH
It's public domain. You can upload them to...

It's public domain. You can upload them to anywhere, if you want.
Forum: Coders. General 30 November 2019, 18:16
Replies: 106
Views: 5,413
Posted By TCH
No, at least i did not. But maybe i was in error....

No, at least i did not. But maybe i was in error. Now i am not sure if this approach is really that reliable:

http://oscomp.hu/depot/internally_measured_distribution.png

It shows ~3-~3%...
Forum: Coders. General 30 November 2019, 01:59
Replies: 106
Views: 5,413
Posted By TCH
Got it, now works. And wow, 4% gain, now the...

Got it, now works. And wow, 4% gain, now the assembly routine is almost 10% faster than the C one.

Yeah, i hear you. Quite interesting though, that originally the planes were the outer cycle, but...
Forum: Coders. General 30 November 2019, 01:23
Replies: 106
Views: 5,413
Posted By TCH
@roondar: The problem with this overhead what...

@roondar:
The problem with this overhead what the OS gives, that it exists in both measures and it's always almost the same, so there should not be any big difference.

But, okay, i gave in. In a...
Forum: Coders. General 30 November 2019, 00:39
Replies: 2
Views: 616
Posted By TCH
A timer unit and a timerequest unit in C

I needed these two small units, so i wrote them, but maybe someone else can use them too. Works under 1.X and 2.0+ KickStarts.

http://oscomp.hu/?details/Timer_unit_in_C_for_Amiga_Amiga_1541...
Forum: Coders. General 28 November 2019, 00:02
Replies: 106
Views: 5,413
Posted By TCH
Of course i don't type this by hand all the time,...

Of course i don't type this by hand all the time, i have a small buildscript. (With some additional parts, for switching OS or CPU and other stuff, but those parts are irrelevant here.)

But based...
Forum: Coders. General 27 November 2019, 23:11
Replies: 106
Views: 5,413
Posted By TCH
I get it, but this part was the answer about your...

I get it, but this part was the answer about your question, if i expect you to write it instead of me.No. If i would be triggered, then i would be already out of here without a word, because that is...
Forum: Coders. General 27 November 2019, 22:14
Replies: 106
Views: 5,413
Posted By TCH
No. If i could write a program which can measure...

No. If i could write a program which can measure the runtime of an external program, then i could've done this myself too. I just wanted to point out, that since you are so obsessed in convincing me...
Forum: Coders. General 27 November 2019, 21:26
Replies: 106
Views: 5,413
Posted By TCH
@deimos: Okay, now i understand, what you...

@deimos:
Okay, now i understand, what you wanted: we're back at the start again and you're saying the direct approach is better for measurements and measuring the change in time by measuring the...
Forum: Coders. General 27 November 2019, 21:07
Replies: 106
Views: 5,413
Posted By TCH
No, i just did not understood what are you wanted...

No, i just did not understood what are you wanted from me. And i am still not sure. If by "change", you mean the change in the source, that was not done by me, but other forum members. And it is...
Forum: Coders. General 27 November 2019, 21:01
Replies: 106
Views: 5,413
Posted By TCH
What? Whenever somebody sent in a new iteration...

What? Whenever somebody sent in a new iteration of the routine, i did tell, if there was an improvement. Did you read the topic?
Forum: Coders. General 27 November 2019, 20:56
Replies: 106
Views: 5,413
Posted By TCH
I did. You questioned it. Without actual...

I did. You questioned it. Without actual countermeasures. All the sources are here in the topic, you can measure anything you want and you can provide the sources and results. If you're right and the...
Forum: Coders. General 27 November 2019, 20:39
Replies: 106
Views: 5,413
Posted By TCH
I've run the program with both algorithm several...

I've run the program with both algorithm several times, summed the total runtimes, divided by the number of calls and calculated the difference. The improvement was obvious. Besides, if you are...
Forum: Coders. General 27 November 2019, 20:13
Replies: 106
Views: 5,413
Posted By TCH
Perhaps...but i think the precisity it would...

Perhaps...but i think the precisity it would yield is not really significant. The more cycles the main loop has, the smaller significance the rest of the code has. In running time of course.If i have...
Forum: Coders. General 27 November 2019, 19:30
Replies: 106
Views: 5,413
Posted By TCH
Yeah, that may be true.Now, that can not be true....

Yeah, that may be true.Now, that can not be true. What would impact the total time so much, that there would be a significant delay on the whole runtime? And why would it only occur, when i use the...
Forum: Coders. General 27 November 2019, 19:14
Replies: 106
Views: 5,413
Posted By TCH
Yes. Since i run the function multiple times, the...

Yes. Since i run the function multiple times, the rest of the time what was taken by the main program is insignificant. But even if it would not be, since it is the same, it still would be almost...
Forum: Coders. General 27 November 2019, 17:32
Replies: 106
Views: 5,413
Posted By TCH
Poor cool kids.On the contrary, i have my...

Poor cool kids.On the contrary, i have my alternatives.It's not that easy, but it's not that hard. As i explained previously, i have a main cycle of 64 loops which calls the drawing function. And...
Forum: Coders. General 27 November 2019, 15:35
Replies: 106
Views: 5,413
Posted By TCH
@ross, @deimos: This seems to be windows...

@ross, @deimos:

This seems to be windows only. Do i miss something?

@Don_Adan:
I think it's because you spared the stack operations of d2. As for d0 it can be negative as it is a coordinate.
Forum: Coders. General 27 November 2019, 14:30
Replies: 106
Views: 5,413
Posted By TCH
No idea. Where can i get GCC 8.3?

No idea. Where can i get GCC 8.3?
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