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Search: Posts Made By: roondar
Forum: Coders. Asm / Hardware Today, 15:50
Replies: 1
Views: 35
Posted By roondar
How about add.w d1,d0 bvc.s .done ...

How about

add.w d1,d0
bvc.s .done
bmi.s .positive
move.w #-32768,d0
bra.s .done
.positive move.w #32767,d0
.done <etc>
Forum: Coders. General Today, 15:45
Replies: 9
Views: 1,048
Posted By roondar
Ah, I see what you mean now. Consider my earlier...

Ah, I see what you mean now. Consider my earlier answer to the private message unsent ;)

See, my code doesn't actually convert ILBM to JPEG. It converts ILMB to raw bitplane data for use in Amiga...
Forum: Amiga scene Today, 10:35
Replies: 661
Views: 123,317
Posted By roondar
Your videos are great though, you can clearly see...

Your videos are great though, you can clearly see that they took a while to make :)
Forum: Coders. Asm / Hardware Yesterday, 22:49
Replies: 31
Views: 949
Posted By roondar
Yeah, SP is a synonym for a7.

Yeah, SP is a synonym for a7.
Forum: Amiga scene Yesterday, 14:40
Replies: 886
Views: 102,925
Posted By roondar
I had spotted it during Bill's stream, yeah. I...

I had spotted it during Bill's stream, yeah. I feel honoured :)
Forum: Amiga scene Yesterday, 13:58
Replies: 886
Views: 102,925
Posted By roondar
Well, I fixed that little issue. Just got the...

Well, I fixed that little issue. Just got the digital version as well :laughing
The way I see it, you deserve it for all the effort you put in!
Forum: Amiga scene Yesterday, 11:55
Replies: 886
Views: 102,925
Posted By roondar
Wait? You get nothing from the physical edition?...

Wait? You get nothing from the physical edition? Oh, I didn't realize that :(
Forum: Amiga scene Yesterday, 10:57
Replies: 886
Views: 102,925
Posted By roondar
I've ordered the Deluxe Edition. Been looking...

I've ordered the Deluxe Edition. Been looking forward to this so much. Might even buy the digital version as well :)
Forum: Coders. Asm / Hardware 09 April 2021, 16:26
Replies: 31
Views: 949
Posted By roondar
That's pretty cool. I'll be sure to check it out!

That's pretty cool. I'll be sure to check it out!
Forum: Coders. Asm / Hardware 09 April 2021, 15:50
Replies: 2
Views: 187
Posted By roondar
On the topic of timing interrupts, I remember...

On the topic of timing interrupts, I remember that the C64 allowed for such precise setting of the CIA timers you could use them for raster/VBL interrupts as well instead of just using the raster...
Forum: support.Games 08 April 2021, 17:11
Replies: 6
Views: 213
Posted By roondar
Ah sorry, I looked it up online as well - I don't...

Ah sorry, I looked it up online as well - I don't actually have a PDF myself :(

Edit: The A1200 manual is available on HOL and apart from button presses, it should be fine to tell you how it all...
Forum: support.Games 08 April 2021, 17:01
Replies: 6
Views: 213
Posted By roondar
I vaguely remembered having some issues with this...

I vaguely remembered having some issues with this game back when I played it, so I checked the manual and you can only start the game after designing at least 4 characters.
Forum: support.Demos 07 April 2021, 17:16
Replies: 10
Views: 820
Posted By roondar
There's at least one OCS/ECS demo that detects...

There's at least one OCS/ECS demo that detects AGA and displays "No AGA allowed" if it finds it ;)
Forum: project.Amiga Game Factory 03 April 2021, 21:36
Replies: 287
Views: 38,657
Posted By roondar
I have a CD32 pad and an A1200, what do you need?

I have a CD32 pad and an A1200, what do you need?
Forum: Amiga scene 03 April 2021, 00:13
Replies: 29
Views: 2,178
Posted By roondar
Surely, you can simply see 1 chunky pixel as the...

Surely, you can simply see 1 chunky pixel as the same as 8 planar pixels in a row on a single plane?

So the barrel shifter then shifts between 0-1 pixels rather than 0-15 (which allows pixel by...
Forum: Amiga scene 02 April 2021, 22:27
Replies: 29
Views: 2,178
Posted By roondar
It'd depend a bit on the CPU used. But in most...

It'd depend a bit on the CPU used. But in most cases (not counting 68060/vampire/etc), c2p has an upper limit of around 25FPS.
Forum: Amiga scene 02 April 2021, 20:55
Replies: 29
Views: 2,178
Posted By roondar
I don't think the Blitter would need all that...

I don't think the Blitter would need all that many changes to be honest, it makes no difference to it whether it's copying planar or chunky data - memory is memory. The real change would be the data...
Forum: Retrogaming General Discussion 02 April 2021, 14:33
Replies: 194
Views: 8,869
Posted By roondar
My post was just me pointing out that in my...

My post was just me pointing out that in my opinion you can't really say 'synth sucks' or 'Paula sucks'. Both have good and bad things going for them. That is all, it wasn't a reply to your post as...
Forum: Retrogaming General Discussion 02 April 2021, 11:39
Replies: 194
Views: 8,869
Posted By roondar
The interesting thing is of course that an awful...

The interesting thing is of course that an awful lot of music today is being done by synthesizers, even if you wouldn't know it. Anything from individual instruments down to full orchestra's can be...
Forum: Coders. General 02 April 2021, 09:10
Replies: 819
Views: 81,222
Posted By roondar
Absolutely, the STE was very much underrated and...

Absolutely, the STE was very much underrated and underutilized back when it was still new.

Would be interesting to see how far it could be pushed with a more realistic RAM setup for back in 1989,...
Forum: Coders. General 01 April 2021, 21:54
Replies: 819
Views: 81,222
Posted By roondar
Still, having four DMA channels rather than two...

Still, having four DMA channels rather than two is an advantage. You could for instance choose not to mix various channels into one and gain both a bit of speed and a bit of RAM back. Or you could...
Forum: Coders. Asm / Hardware 01 April 2021, 11:34
Replies: 8
Views: 438
Posted By roondar
I see, I misread that macro. So, am I then...

I see, I misread that macro.
So, am I then correct in saying that the workaround is that you set a symbol to a value based on REPTN in a macro and then you expand that symbol in the same macro?
Forum: Coders. Asm / Hardware 01 April 2021, 09:10
Replies: 8
Views: 438
Posted By roondar
Ah, of course! For some reason I thought REPTN...

Ah, of course!
For some reason I thought REPTN couldn't be used as a macro argument :confused

Good to know it can.
Forum: Coders. Asm / Hardware 31 March 2021, 16:39
Replies: 8
Views: 438
Posted By roondar
I'd be really interested in knowing if this is...

I'd be really interested in knowing if this is possible as well. I've not found any way to do it, but that doesn't mean it can't be done ;)
Forum: Music. Tutorials 30 March 2021, 13:06
Replies: 34
Views: 1,420
Posted By roondar
I'm not sure I understood this correctly, but...

I'm not sure I understood this correctly, but just to point it out: assembly doesn't have any default channels to play back sound. The coder always has full control. In fact, unless extra effort is...
Forum: Retrogaming General Discussion 29 March 2021, 13:52
Replies: 194
Views: 8,869
Posted By roondar
Yeah, I did read those threads but didn't want to...

Yeah, I did read those threads but didn't want to make this go too far off-topic with discussions about Paula rather than the ST soundchip :great
Forum: Retrogaming General Discussion 29 March 2021, 12:31
Replies: 194
Views: 8,869
Posted By roondar
I definitely agree that the 14 bit trick sounds...

I definitely agree that the 14 bit trick sounds much better than normal Paula output. It's a pretty cool trick! I just don't agree that 16384 ~= 65536 :p
Forum: Retrogaming General Discussion 29 March 2021, 10:35
Replies: 194
Views: 8,869
Posted By roondar
The Achilles heel of the Amiga's audio output has...

The Achilles heel of the Amiga's audio output has always been a lack of RAM. Now, these days it's become quite easy to alleviate this problem with cheap mass storage and improved player technology....
Forum: Retrogaming General Discussion 27 March 2021, 21:03
Replies: 194
Views: 8,869
Posted By roondar
Well, though it's a nice acomplishment, I could...

Well, though it's a nice acomplishment, I could instantly hear that the output quality was quite a bit lower and clearly much noisier than what the SID itself produces. Don't want to be a downer on...
Forum: Music. Tutorials 27 March 2021, 19:11
Replies: 2
Views: 241
Posted By roondar
I've done a test by using a slightly altered...

I've done a test by using a slightly altered version of my audio mixer program. The alteration being that there is no more mixer, just the 4 channel protracker player.

The player I use is by Frank...
Forum: Amiga scene 27 March 2021, 18:34
Replies: 886
Views: 102,925
Posted By roondar
Do you have any idea at what time the stream will...

Do you have any idea at what time the stream will be?
Forum: Retrogaming General Discussion 25 March 2021, 10:56
Replies: 194
Views: 8,869
Posted By roondar
This wouldn't surprise me, Yamaha has withheld...

This wouldn't surprise me, Yamaha has withheld components from companies before. One example of note is the Adlib Gold story, which relied on a Yamaha DSP that they just couldn't deliver in time...
Forum: Coders. General 24 March 2021, 11:23
Replies: 4
Views: 535
Posted By roondar
Yeah, I do use a linker (and makefiles). My...

Yeah, I do use a linker (and makefiles).
My weapons of choice are vasm, vlink and the version of make made by the same author.
Forum: Coders. General 22 March 2021, 22:58
Replies: 4
Views: 535
Posted By roondar
I tend to split my files by functionality and if...

I tend to split my files by functionality and if this still leads to files that are too big, I split up further. So for example, I might have a graphics.asm but if that gets too big, I might have a...
Forum: Retrogaming General Discussion 19 March 2021, 11:40
Replies: 21
Views: 1,036
Posted By roondar
Well Zeus, you definitely deserve it for all the...

Well Zeus, you definitely deserve it for all the pain you've been through with those games ;)

Seriously though, well deserved - you got a very nice channel going and I still love the 'no...
Forum: Coders. Asm / Hardware 17 March 2021, 15:12
Replies: 65
Views: 3,578
Posted By roondar
Wouldn't the commands to set Paula to play up to...

Wouldn't the commands to set Paula to play up to 4 samples every now and then (I'm grossly simplifying here of course, I know it's more complicated than that) be much smaller than premixed audio for...
Forum: Coders. System 16 March 2021, 14:12
Replies: 3
Views: 3,425
Posted By roondar
I've never used it, but I did find a complete...

I've never used it, but I did find a complete list of all the functions and their descriptions in the RKM:
http://amigadev.elowar.com/read/ADCD_2.1/Includes_and_Autodocs_3._guide/node0460.html
Forum: Coders. Asm / Hardware 16 March 2021, 09:13
Replies: 65
Views: 3,578
Posted By roondar
That's just as valid as what I wrote, so yes...

That's just as valid as what I wrote, so yes :D:great
Forum: Coders. General 15 March 2021, 22:54
Replies: 2
Views: 350
Posted By roondar
SPRxPTH/SPRxPTL are the pointers used by the...

SPRxPTH/SPRxPTL are the pointers used by the Amiga for Sprites in 'automatic' mode. They point to the Sprite data in chip memory.

SPRxDATA/SPRxDATB are the actual contents of the Sprite for the...
Forum: Amiga scene 15 March 2021, 22:51
Replies: 12
Views: 706
Posted By roondar
The mixer as currently written does not support...

The mixer as currently written does not support looped samples, but adding support for that should be quite easy as long as the sample is an exact multiple of the sample buffer in size. Can be done...
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