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Search: Posts Made By: roondar
Forum: support.Games Today, 17:25
Replies: 16
Views: 384
Posted By roondar
Well, the core issue is that it's the software...

Well, the core issue is that it's the software that causes incompatibilities and not the chipset. For example, the A500 and A500+ are virtually identical apart from one having more memory and a ECS...
Forum: support.Demos Today, 15:43
Replies: 2
Views: 89
Posted By roondar
DMS is like a zip archive for disks. WinUAE...

DMS is like a zip archive for disks.

WinUAE should support them natively, so you should be able to just mount it as if it were an .adf file.

On a real Amiga, you need to use DMS to unpack it to...
Forum: support.Games Today, 14:27
Replies: 16
Views: 384
Posted By roondar
Gotcha, that makes perfect sense. Thanks for the...

Gotcha, that makes perfect sense. Thanks for the info.
Forum: support.Games Today, 11:56
Replies: 16
Views: 384
Posted By roondar
I'm not aware of any modulo issues for OCS modes...

I'm not aware of any modulo issues for OCS modes on AGA machines? Never needed to do anything different for it to work in my code.

So now I'm interested :D, do you know what it is exactly?
Forum: support.Games Today, 10:54
Replies: 16
Views: 384
Posted By roondar
How much compatibility there is between Amiga...

How much compatibility there is between Amiga models all depends on how you look at it:

From the perspective of the custom chipset itself (i.e. what registers do what, what registers are at what...
Forum: Amiga scene Yesterday, 22:45
Replies: 92
Views: 9,475
Posted By roondar
Very nice, great logo :)

Very nice, great logo :)
Forum: Coders. Asm / Hardware 10 July 2020, 11:53
Replies: 202
Views: 18,813
Posted By roondar
This is my view as well, to each their own :great...

This is my view as well, to each their own :great


I'd agree with Galahad that a 25FPS Xenon 2 (with everything else remaining as is) would be an uphill battle for the Amiga.
Removing the...
Forum: Retrogaming General Discussion 09 July 2020, 17:12
Replies: 93
Views: 3,085
Posted By roondar
Now, I have no electronics background at all but...

Now, I have no electronics background at all but even so this does seem to me to be underselling what the chip actually does.

See, Paula is much more than just the audio parts (it has a number of...
Forum: Coders. Asm / Hardware 09 July 2020, 16:32
Replies: 202
Views: 18,813
Posted By roondar
Please understand, I really hate Xenon 2. I find...

Please understand, I really hate Xenon 2. I find it unplayable and one of the most overrated games of the 16 bit era. So, I agree with you that Xenon 2 is a bad game. However, there's still something...
Forum: Retrogaming General Discussion 08 July 2020, 17:32
Replies: 26
Views: 906
Posted By roondar
I don't think that is quite correct. AFAIK...

I don't think that is quite correct. AFAIK Turrican 3 is a different code base which made by reusing the Mr. Nutz code as it's base. Which kind of makes sense, as Turrican 3 is a rather different...
Forum: Retrogaming General Discussion 08 July 2020, 15:32
Replies: 26
Views: 906
Posted By roondar
Oh, I'm not surprised at all. But a man can...

Oh, I'm not surprised at all. But a man can dream, even if it's never going to happen :)
Forum: project.Amiga Game Factory 08 July 2020, 14:11
Replies: 65
Views: 4,515
Posted By roondar
Indeed, updates are nice to have even at this...

Indeed, updates are nice to have even at this early stage :great
Forum: Retrogaming General Discussion 08 July 2020, 13:25
Replies: 26
Views: 906
Posted By roondar
I'd love to see the Turrican II and Turrican I...

I'd love to see the Turrican II and Turrican I source code. They're such iconic games from the 8 and 16 bit systems.
Forum: Retrogaming General Discussion 08 July 2020, 12:46
Replies: 53
Views: 1,748
Posted By roondar
There's no such thing as too many shooters :p ...

There's no such thing as too many shooters :p

Anyway, it's nice to see these games in development. This one looks very good. More so considering it's in AMOS, which is a challenge in its own...
Forum: Coders. Asm / Hardware 08 July 2020, 11:30
Replies: 45
Views: 2,878
Posted By roondar
It could be that I just got really unlucky ;) ...

It could be that I just got really unlucky ;)
Anyway, sorry, I don't have that file any more - it's long been overwritten by a newer version :(
Forum: Coders. General 08 July 2020, 10:34
Replies: 12
Views: 820
Posted By roondar
Yeah, I tend to agree. The Amiga OCS chipset...

Yeah, I tend to agree.

The Amiga OCS chipset is (IMHO anyway) pretty clearly optimized for two modes in particular: 4 bitplanes and Dual Playfield. Both have the full sprite palette available for...
Forum: Coders. Asm / Hardware 08 July 2020, 10:26
Replies: 45
Views: 2,878
Posted By roondar
Yes, definitely. I tested this extensively...

Yes, definitely. I tested this extensively because originally I couldn't believe it didn't work. It's not a stack problem, it's an RNC problem. Note that it only happened to me on one specific file....
Forum: Coders. Asm / Hardware 07 July 2020, 23:48
Replies: 45
Views: 2,878
Posted By roondar
Ok, you point A0 to the buffer that contains the...

Ok, you point A0 to the buffer that contains the packed data.
D0 then is the value that is added to A0 to get to the start of the packed data.

This is there so you can do stuff like read like a...
Forum: Amiga scene 07 July 2020, 23:32
Replies: 36
Views: 2,680
Posted By roondar
I so love this stuff. The source to Agony is...

I so love this stuff. The source to Agony is great stuff to have available, that game uses some seriously interesting tech stuff. Will be interesting to see how it was done "back in the day" :)
Forum: Retrogaming General Discussion 07 July 2020, 23:30
Replies: 53
Views: 1,748
Posted By roondar
I'm pretty sure I heard a friend of mine talk...

I'm pretty sure I heard a friend of mine talk about how some versions of Protracker allowed you to attach a midi keyboard to enter notes with a few years back. And I definitely recall using MED or...
Forum: Coders. General 07 July 2020, 23:27
Replies: 12
Views: 820
Posted By roondar
Dynamically switching bitplanes on and off is...

Dynamically switching bitplanes on and off is such a neat and Amiga specific trick. I should really look at Powder to see what the end result looks like. Makes me wonder if more games did that?
...
Forum: Coders. Asm / Hardware 07 July 2020, 22:39
Replies: 45
Views: 2,878
Posted By roondar
IIRC it just worked without issues. If you...

IIRC it just worked without issues.

If you have problems, I'd suggest asking ross for help - he wrote the code, he will have a better chance of helping you figure out the problem than I do as I...
Forum: Coders. Asm / Hardware 07 July 2020, 18:02
Replies: 45
Views: 2,878
Posted By roondar
The links to the NRV2R packer and unpacker are in...

The links to the NRV2R packer and unpacker are in this very thread on page 1 ;)
They're not mine to distribute, so all I can offer is those same links :great

See here for the unpacker:...
Forum: Retrogaming General Discussion 06 July 2020, 22:17
Replies: 93
Views: 3,085
Posted By roondar
Well not exactly, but that is the general gist of...

Well not exactly, but that is the general gist of it. There's more to it than that IIRC, but it's ST stuff and I've never programmed it myself so I couldn't tell you exactly what they do.
Forum: Coders. General 06 July 2020, 10:27
Replies: 12
Views: 820
Posted By roondar
I can't recall what Sandruzzo wrote about Rygar's...

I can't recall what Sandruzzo wrote about Rygar's DMA use, but it seems a logical conclusion.

As for 25FPS, well - it's still going to be considerably slower than 5BPL or 4BPL running at 25FPS....
Forum: Coders. Asm / Hardware 06 July 2020, 10:24
Replies: 202
Views: 18,813
Posted By roondar
I did cover a free-form sprite layer, yes :) ...

I did cover a free-form sprite layer, yes :)
And you're right that it could display a background like the one Xenon 2 does.

However, there's an issue with that particular approach which might...
Forum: Retrogaming General Discussion 06 July 2020, 00:02
Replies: 93
Views: 3,085
Posted By roondar
One thing I've always found fascinating about...

One thing I've always found fascinating about Paula is the very rarely used modulation feature. Wonder what kind of sound that can create (I did see/hear that one demo that used it, btw).

I've...
Forum: Coders. Asm / Hardware 05 July 2020, 23:53
Replies: 202
Views: 18,813
Posted By roondar
I've thought about it for a bit as I like...

I've thought about it for a bit as I like puzzling about this kinda stuff :D

Setting aside the number of objects thrown around on screen (as Galahad points out, it can get very hectic which means...
Forum: Coders. General 05 July 2020, 23:25
Replies: 12
Views: 820
Posted By roondar
To add a bit to what ross posted, consider...

To add a bit to what ross posted, consider looking at it in terms of how much memory is involved. See, at it's core, it's all a question of how much data needs to be updated to draw something to the...
Forum: Retrogaming General Discussion 04 July 2020, 19:18
Replies: 53
Views: 1,748
Posted By roondar
Using Screen Copy to scroll is very slow. The...

Using Screen Copy to scroll is very slow. The Amiga has special hardware to scroll (which does not copy the screen). This scrolling hardware is used by the Screen Offset command.

The good news is...
Forum: Coders. Asm / Hardware 04 July 2020, 01:18
Replies: 7
Views: 373
Posted By roondar
This might sound a bit counter-intuitive, but...

This might sound a bit counter-intuitive, but I've found that the fastest possible way of blitting on the A500 (or indeed any Amiga) is to only ever run the Blitter in nasty mode if you have...
Forum: Retrogaming General Discussion 03 July 2020, 21:02
Replies: 53
Views: 1,748
Posted By roondar
AMOS can natively do smooth panning with the...

AMOS can natively do smooth panning with the Screen Offset command (at least, that is the AMOS PRO command to do this. Pretty sure it's the same command in AMOS, might be called a little...
Forum: support.Hardware 01 July 2020, 16:03
Replies: 21
Views: 1,033
Posted By roondar
Am I reading it right? They're going to allow...

Am I reading it right? They're going to allow digital output? Because that would be a "killer" feature for me - my monitor supports 50Hz over HDMI, but has some issues with a 50Hz over VGA signal.
Forum: Amiga scene 01 July 2020, 16:02
Replies: 208
Views: 26,727
Posted By roondar
I actually felt that Skill Grid used a very...

I actually felt that Skill Grid used a very interesting technique for it's graphics. One that cleverly shows some of the advantages of having more bitplanes to play around with. So, I'd argue it...
Forum: Coders. Blitz Basic 01 July 2020, 15:55
Replies: 16
Views: 1,280
Posted By roondar
It looks nice, graphics style is appealing and...

It looks nice, graphics style is appealing and it's very smooth. Looking forward to seeing more :)
Forum: Coders. AMOS 01 July 2020, 15:53
Replies: 5
Views: 424
Posted By roondar
A different way of looking at this would be to...

A different way of looking at this would be to split up the procedures into separate components. That saves the need for using goto's and is a good way to functionally split your program up into...
Forum: Amiga scene 30 June 2020, 17:36
Replies: 45
Views: 2,097
Posted By roondar
There's actually some A1000 only software that...

There's actually some A1000 only software that uses the Kickstart RAM as additional RAM for the system instead. Always thought that was a cool trick.
Forum: support.Hardware 30 June 2020, 17:22
Replies: 199
Views: 20,166
Posted By roondar
Right, well - I'm man enough to admit when I'm...

Right, well - I'm man enough to admit when I'm wrong.

I misunderstood this. And it hadn't occurred to me you could simply use an external cable to work around this issue, even though that is super...
Forum: support.Hardware 30 June 2020, 16:49
Replies: 199
Views: 20,166
Posted By roondar
Just to be clear, it already seems I...

Just to be clear, it already seems I misunderstood. I watched your video and what I understood from it was that you needed to solder wires from the outputs (albeit inside the A1200) to the inputs on...
Forum: Amiga scene 30 June 2020, 16:02
Replies: 45
Views: 2,097
Posted By roondar
In their base form neither supports 3.5 or 3.9 as...

In their base form neither supports 3.5 or 3.9 as those need a 68020/68030 to run, IIRC.
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