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Forum: Coders. Asm / Hardware 16 April 2013, 09:29
Replies: 6
Views: 2,900
Posted By Vikke
Den, Thank you for the help, I' ll test the...

Den,

Thank you for the help, I' ll test the bugfix later today.

I noticed the problem with labels and constants, but didn't try to make changes to this. I have to test some CSS to get...
Forum: Coders. Asm / Hardware 14 April 2013, 11:15
Replies: 6
Views: 2,900
Posted By Vikke
Den, Thank you for the syntax-highlighter. I...

Den,

Thank you for the syntax-highlighter. I incorporated it into my site, and it seems to work quite well. There are still some small changes I will try to get made (I still have to break long...
Forum: Coders. Asm / Hardware 11 April 2013, 20:44
Replies: 6
Views: 2,900
Posted By Vikke
Den, thanks for that. I'll test it tomorrow, it...

Den,
thanks for that. I'll test it tomorrow, it looks promising :)
Forum: Coders. Asm / Hardware 11 April 2013, 09:19
Replies: 6
Views: 2,900
Posted By Vikke
5th tutorial, Horizontal scroller

Hi.

I'm sorry that I didn't get this part released earlier (it has been ready for a long time), but I have had probems with getting the sourcecode syntax-highlighted for a HTML-page.

For some...
Forum: Coders. Asm / Hardware 10 April 2013, 20:32
Replies: 11
Views: 2,470
Posted By Vikke
For 256 scanlines,you have to change DIWSTOP to...

For 256 scanlines,you have to change DIWSTOP to $2CC1.
Forum: Coders. Asm / Hardware 01 April 2013, 20:53
Replies: 11
Views: 2,470
Posted By Vikke
I can think of 2 totally different methods for...

I can think of 2 totally different methods for doing a sine scoller with the blitter. One implements a standard horizontal scroller to some degree, the other method is .... something I have never...
Forum: Coders. Asm / Hardware 01 April 2013, 19:57
Replies: 11
Views: 2,470
Posted By Vikke
Yes, I will change the wording to bitplane...

Yes, I will change the wording to bitplane instead of bitfield. Not that bitfield is totally wrong, but bitplane is more commonly used in Amiga programming. I shouldn't be writing the tutorials in...
Forum: Coders. Asm / Hardware 01 April 2013, 01:37
Replies: 11
Views: 2,470
Posted By Vikke
4th tutorial on ASM- and HW-coding

Hi again,

This time I make the same effect as last time, but on a larger copperbar. This needs a larger Hshift-value than 16px, so a little trick is used, but not modulos this time. In the LHA...
Forum: project.Sprites 30 March 2013, 18:25
Replies: 24
Views: 6,718
Posted By Vikke
Yes, GfxRip does work. But I think it could be...

Yes, GfxRip does work. But I think it could be done better and also GfxRip isn't really a modern software, so even there would be possible to make a lot of changes to the better.
Modulos are...
Forum: project.Sprites 30 March 2013, 00:21
Replies: 24
Views: 6,718
Posted By Vikke
Joe, I meant optimized for Amiga graphics,...

Joe,

I meant optimized for Amiga graphics, so the program can handle 1-8 bitfields with modulos. By optimizing I mean it would be easier to get the graphics ripped. Gfxrip works, but it would be...
Forum: project.Sprites 29 March 2013, 22:22
Replies: 24
Views: 6,718
Posted By Vikke
Joe, Yes I tried GfxRip earlier today, and...

Joe,

Yes I tried GfxRip earlier today, and it works, but a program optimized for Amiga graphics would be nice.
Forum: Coders. Asm / Hardware 29 March 2013, 22:21
Replies: 35
Views: 3,340
Posted By Vikke
Bippy, What do you want to accomplish?...

Bippy,

What do you want to accomplish? Perhaps we can give you some clues how to proceed.

How many copperbars do you want to be displayed, and how do you want them to move?
Forum: project.Sprites 29 March 2013, 17:01
Replies: 24
Views: 6,718
Posted By Vikke
Should this beta version of the program work on...

Should this beta version of the program work on Windows7 64-bit?

I don't get any graphics to show up :(
Forum: Coders. Asm / Hardware 28 March 2013, 22:05
Replies: 35
Views: 3,340
Posted By Vikke
Bippym, How are your copperbars coming...

Bippym,

How are your copperbars coming along? I have been playing with the blitter today...and fonts, so what might be coming up in a week? :)
Forum: Coders. Asm / Hardware 26 March 2013, 15:57
Replies: 6
Views: 1,769
Posted By Vikke
Thanks for the hints to improve compatibility,...

Thanks for the hints to improve compatibility, I'll try to get these changed. I'll have to try to set up my editor for Amiga coding.

I knew blk, was old and shouldn't be used anymore, but old...
Forum: Coders. Asm / Hardware 25 March 2013, 21:33
Replies: 35
Views: 3,340
Posted By Vikke
If you don't need any interlooping between the...

If you don't need any interlooping between the bars (in which case a z-value of some sort would be necessary), you only have to check for the lowest y-position and start from that bar.

But beware:...
Forum: Coders. Asm / Hardware 25 March 2013, 21:05
Replies: 35
Views: 3,340
Posted By Vikke
When double buffering the copperlists you have to...

When double buffering the copperlists you have to update all copperbars every frame.

And there isn't a way of knowing if the bars are touching eachother, other than using the y-position and height...
Forum: Coders. Asm / Hardware 25 March 2013, 01:19
Replies: 35
Views: 3,340
Posted By Vikke
PAL-fix: Copper WAIT $ffdf,$fffe The...

PAL-fix:
Copper WAIT $ffdf,$fffe

The problem is that the vertical beamposition is only a byte long, so $ff is the largest possible value before it goes over to $0 again.

So, if you want to...
Forum: Coders. Asm / Hardware 25 March 2013, 01:13
Replies: 35
Views: 3,340
Posted By Vikke
Double buffering the copperlists will make it...

Double buffering the copperlists will make it easier to do all kind of crazy stuff. And yes, you will have to rewrite the copperlist-logic, as when doing double buffering you can't just change the...
Forum: Coders. Asm / Hardware 25 March 2013, 00:57
Replies: 35
Views: 3,340
Posted By Vikke
Hmm... if it's flickery and too fast, I would...

Hmm... if it's flickery and too fast, I would think that the Wait for Vertical Blanking isn't doing what it should, and especieally if an extra "NOP" loop slows it down.

And looking at your code:...
Forum: Coders. Asm / Hardware 24 March 2013, 23:06
Replies: 35
Views: 3,340
Posted By Vikke
It is the best way to learn, doing it yourself :)...

It is the best way to learn, doing it yourself :) Trial and error, best method known.

Your code should work, but I don't understand where the $c8 for bottom line comes from. And also it seems...
Forum: Coders. Asm / Hardware 24 March 2013, 22:31
Replies: 35
Views: 3,340
Posted By Vikke
If I understand correctly what you want to do,...

If I understand correctly what you want to do, you would like to change the $2c, $2d, $2e etc bytes in the copperlist, not just the "$2c" in the M68k-code?

I would recommend building up the...
Forum: Coders. Asm / Hardware 24 March 2013, 21:32
Replies: 35
Views: 3,340
Posted By Vikke
You have to remember that the $-sign means you...

You have to remember that the $-sign means you are using hexvalues.

$100 * 31 = 256 *31 = 7936 = $1f00
(or $100 * (32-1) = $2000 - $100 = $1f00)

I don't really understand what you're asking,...
Forum: Coders. Asm / Hardware 24 March 2013, 20:00
Replies: 35
Views: 3,340
Posted By Vikke
Check to see that D2 really does contain the...

Check to see that D2 really does contain the rasterline you want to the copperbar be created on. If you use D2 to anything other in your code the problem could be there.
Forum: Coders. Asm / Hardware 23 March 2013, 22:44
Replies: 6
Views: 1,769
Posted By Vikke
Good idea, especially as I forgot to include the...

Good idea, especially as I forgot to include the address to the website in the previous post :)

Let's see if this works. ==> And no, no signature. So, here is the address to the website:...
Forum: Coders. Asm / Hardware 23 March 2013, 22:18
Replies: 6
Views: 1,769
Posted By Vikke
3rd tutorial on ASM- and HW-coding

So, I'm back with yet another very popular Amiga-effect:

Rolling an image around a copperbar.

This is just a 32px tall copperbar and a 100px tall image.
Just to spice up the screen a little...
Forum: Coders. Asm / Hardware 23 March 2013, 17:00
Replies: 35
Views: 3,340
Posted By Vikke
Yes it seems realistic, if you mean putting your...

Yes it seems realistic, if you mean putting your name as an image on top of a copperbar. It is possible to make graphics, like your name, with just the copper. But I would leave coppergraphics for...
Forum: Coders. Asm / Hardware 23 March 2013, 13:10
Replies: 82
Views: 6,049
Posted By Vikke
I broke those laws when I was younger, as I...

I broke those laws when I was younger, as I started with copparbars :)

But, for my part I will next start looking at coding scrollers. Starting with a very standard textscroller and ending with...
Forum: Coders. Asm / Hardware 23 March 2013, 08:01
Replies: 3
Views: 1,213
Posted By Vikke
The optimizations would be in tutorial #4, but...

The optimizations would be in tutorial #4, but seeing how Bippym already used a pregenerated copperlist and modifying it I will leave copperlist optimizations for later.

But these optimizations...
Forum: Coders. Asm / Hardware 23 March 2013, 01:52
Replies: 82
Views: 6,049
Posted By Vikke
You could try to make a palette fade to black, or...

You could try to make a palette fade to black, or colorcycling (as that was one of the things the Amiga was quite known for).

Or just making the backgroundcolor get a different color for each...
Forum: Coders. Asm / Hardware 22 March 2013, 22:57
Replies: 82
Views: 6,049
Posted By Vikke
Well, if the library can't be opened you have...

Well, if the library can't be opened you have called forbid(), but try to return to to the CLI or Workbench without permit().

But graphics.library with minimum version 0, should always open...
Forum: Coders. Asm / Hardware 22 March 2013, 22:25
Replies: 82
Views: 6,049
Posted By Vikke
Congratulations! :)

Congratulations! :)
Forum: Coders. Asm / Hardware 22 March 2013, 22:10
Replies: 82
Views: 6,049
Posted By Vikke
Please check them once, unless you have changed...

Please check them once, unless you have changed them from the code earlier in this thread. There the values _are_ wrong.
Forum: Coders. Asm / Hardware 22 March 2013, 22:06
Replies: 82
Views: 6,049
Posted By Vikke
Bippym, I would suggest, once again, to...

Bippym,

I would suggest, once again, to check the values you have for the following:
BPL3PTH
BPL3PTL
BPL4PTH
BPL4PTL
BPL5PTH
BPL5PTL
BPL6PTH
Forum: Coders. Asm / Hardware 22 March 2013, 19:49
Replies: 82
Views: 6,049
Posted By Vikke
Sorry about that. It shows I haven't been doing...

Sorry about that. It shows I haven't been doing MC68k code in 25 years.

There is of course a difference between LEA and MOVE.L - it's nice to know there are people here that have been doing asm...
Forum: Coders. Asm / Hardware 22 March 2013, 19:26
Replies: 82
Views: 6,049
Posted By Vikke
Bippym, Good to know tou get the code to...

Bippym,

Good to know tou get the code to work at some level.

Two hints to get the copperlist working:

1. lea mycopper,a0 ==> mycopper is a pointer and has to be handled as such.

2....
Forum: Coders. Asm / Hardware 22 March 2013, 09:57
Replies: 3
Views: 1,213
Posted By Vikke
Copperlist optimizations for my tutorial #4

I have a question for all of you that are reading my tutorials.

Would you like me to show how you can optimize copperlistgeneration to leave a lot more cycles for the CPU to do other stuff than...
Forum: Coders. Asm / Hardware 21 March 2013, 22:42
Replies: 82
Views: 6,049
Posted By Vikke
bippym, how is your code coming along? Have...

bippym,

how is your code coming along? Have you made any MC68k-programs before?

I am now preparing some more code for release during the weekend.
Forum: Coders. Asm / Hardware 20 March 2013, 21:08
Replies: 82
Views: 6,049
Posted By Vikke
You don't have to disable DMA or INT when doing a...

You don't have to disable DMA or INT when doing a copperlist. The new copperlist get activated by moving the address of the start of the copperlist to COPxLCH & COPxLCL , after the address is...
Forum: support.WinUAE 19 March 2013, 20:54
Replies: 7
Views: 1,719
Posted By Vikke
Toni, A hardfile for the system and a...

Toni,

A hardfile for the system and a Windows directory for storage for the executables is ok, I presume? At least I haven't had any hickups yet, not that many gurus meditating either :)
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