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Forum: Coders. General Yesterday, 23:51
Replies: 6
Views: 118
Posted By roondar
On the Amiga, the cd command works as follows: ...

On the Amiga, the cd command works as follows:
cd <<volume>>:<<directory1>>/<<directory2>>
In the form of an example:

cd work:directory1/directory2
Moving to the directory above the current one...
Forum: Retrogaming General Discussion Yesterday, 19:25
Replies: 9
Views: 100
Posted By roondar
Err, all I did was give my opinion :shocked ...

Err, all I did was give my opinion :shocked
You're more than welcome to have yours :great
Forum: Retrogaming General Discussion Yesterday, 18:12
Replies: 9
Views: 100
Posted By roondar
Well, it may be odd to you, but even when I don't...

Well, it may be odd to you, but even when I don't get motion sickness I still prefer the non-bobbing camera. Head bobbing IMHO never actually works to make things realistic because your brain is well...
Forum: Retrogaming General Discussion Yesterday, 17:59
Replies: 9
Views: 100
Posted By roondar
I'll answer this one for fun and then I'll jump...

I'll answer this one for fun and then I'll jump back to only on-topic stuff again ;)

So, err, no - not really. I have motion sickness sensitivity on seafaring boats and I can't read/watch screens...
Forum: Retrogaming General Discussion Yesterday, 16:59
Replies: 9
Views: 100
Posted By roondar
Head bobbing in FPSes

Mod note: Some posts taken out of the "new amiga 500 doom like !" thread as they were getting too off-topic:
http://eab.abime.net/showthread.php?t=98654
...
Forum: Coders. Asm / Hardware Yesterday, 16:51
Replies: 69
Views: 3,074
Posted By roondar
Ahhh, that explains things :) So if you could...

Ahhh, that explains things :)
So if you could get it down to two chipmemory updates you'd gain something on the order of 12*5 CPU cycles per blit (or about 4700 cycles total in this example case)....
Forum: Coders. General Yesterday, 16:47
Replies: 131
Views: 17,884
Posted By roondar
Yeah, Amiga HW Sprite colours being shared with...

Yeah, Amiga HW Sprite colours being shared with the main palette entries has always been a bit unfortunate :blased

Yes, I know there are is a trick to lower colour register use for 3 colour...
Forum: Coders. Asm / Hardware Yesterday, 13:00
Replies: 69
Views: 3,074
Posted By roondar
The thing is that looking at the Visual DMA...

The thing is that looking at the Visual DMA debugger tells us that both versions of the effect end their last blit at pretty much exactly the same spot of the frame (almost exactly at the bottom...
Forum: Retrogaming General Discussion Yesterday, 11:33
Replies: 59
Views: 1,825
Posted By roondar
Hmm, it's difficult to know for sure. As in, I'm...

Hmm, it's difficult to know for sure. As in, I'm 100% sure you are correct that some fudging and nudging of numbers took place to make things look better than they really were (especially if such...
Forum: Coders. Asm / Hardware Yesterday, 11:25
Replies: 69
Views: 3,074
Posted By roondar
Let me explain :) It's actually in part your...

Let me explain :)
It's actually in part your calculations that made me wonder why there was no gain ;)

Basically, I kind of disagree we shouldn't see any gains (or perhaps I just don't understand...
Forum: Coders. Asm / Hardware 09 August 2020, 23:34
Replies: 69
Views: 3,074
Posted By roondar
Hmm, still 79... That's actually quite...

Hmm, still 79... That's actually quite interesting, I would've expected a bit more impact of moving to Copper blits. But if I understand you correctly, both methods (at least as you did them) take a...
Forum: Coders. Asm / Hardware 09 August 2020, 21:26
Replies: 69
Views: 3,074
Posted By roondar
Is it possible the code accidentally stops at...

Is it possible the code accidentally stops at line 256?
Edit: no, that's can't be right, it stops too low in the frame for that.
Forum: project.Amiga Game Factory 09 August 2020, 13:04
Replies: 60
Views: 3,275
Posted By roondar
I actually really rather like this version, the...

I actually really rather like this version, the reverb is done very well it really adds something.

Love me a good chiptune :)
Forum: project.Amiga Game Factory 08 August 2020, 16:48
Replies: 60
Views: 3,275
Posted By roondar
Ooh, another one of my favourite games gets the...

Ooh, another one of my favourite games gets the "tiny" treatment. Looking forward to it :)
Forum: Graphics. Finished Work 08 August 2020, 13:13
Replies: 3
Views: 300
Posted By roondar
Nice :)

Nice :)
Forum: Coders. Asm / Hardware 08 August 2020, 12:45
Replies: 69
Views: 3,074
Posted By roondar
I recall reading a thread about using the Copper...

I recall reading a thread about using the Copper on AGA in 4x fetch mode to create two separate horizontal screen areas moving into two separate directions. I can't find it now, but it would save...
Forum: Retrogaming General Discussion 07 August 2020, 16:51
Replies: 59
Views: 1,825
Posted By roondar
Then again, I've recently watched the full...

Then again, I've recently watched the full credits for the Final Fantasy VII Remake... A small city worth of people worked on it :p
Forum: Amiga scene 07 August 2020, 11:34
Replies: 110
Views: 11,266
Posted By roondar
I've always loved those snake like enemies in...

I've always loved those snake like enemies in shoot em ups. Great stuff.
On a side note, I'm still not completely over just how great that background looks. Awesome gradient, awesome line scrolling...
Forum: Coders. Language 05 August 2020, 14:14
Replies: 24
Views: 892
Posted By roondar
Good question. There are several tutorials on...

Good question. There are several tutorials on using the Amiga hardware, I'd say the one that helped me the most was Photon of Scoopex's YouTube tutorials...
Forum: Coders. Language 05 August 2020, 11:31
Replies: 24
Views: 892
Posted By roondar
A small word of caution about the Bullfrog...

A small word of caution about the Bullfrog tutorial. It is a useful starting point, but IIRC it is not particularly good at explaining the Amiga graphics hardware. The examples I saw did not use the...
Forum: Coders. Language 03 August 2020, 20:26
Replies: 24
Views: 892
Posted By roondar
Well, there is the Amiga Hardware Reference...

Well, there is the Amiga Hardware Reference Manual, but that is aimed 100% at low-level hardware access and tends to be coupled with assembly as a result. Using the info with C is possible, but...
Forum: Coders. Asm / Hardware 03 August 2020, 18:52
Replies: 69
Views: 3,074
Posted By roondar
Indeed, I like that idea too. Trying to get as...

Indeed, I like that idea too. Trying to get as many cycles on the bus used in a useful way as possible is the great challenge on the Amiga. This is why I originally tried to use Blitter interrupts in...
Forum: Coders. Language 03 August 2020, 16:46
Replies: 24
Views: 892
Posted By roondar
Indeed, if you wish to use a high level language...

Indeed, if you wish to use a high level language and you're comfortable with C/C++, I'd recommend Bebbo's GCC (or the other GCC environment aimed more at demo coding by Bartman).

If you do wish to...
Forum: Coders. Asm / Hardware 03 August 2020, 16:39
Replies: 69
Views: 3,074
Posted By roondar
I've found that generally speaking, the A500 can...

I've found that generally speaking, the A500 can push about the same number of Bobs (with three buffer restore) using Dual Playfield as it can on a 4 bitplane screen. The extra bitplane DMA used by...
Forum: Coders. Asm / Hardware 03 August 2020, 15:51
Replies: 69
Views: 3,074
Posted By roondar
Right, it is indeed hard to be exact without...

Right, it is indeed hard to be exact without measurements. Perhaps I should try it myself once to see how it goes. Thanks for your views though, they certainly sound reasonable.
Forum: Coders. General 03 August 2020, 13:24
Replies: 131
Views: 17,884
Posted By roondar
Yeah, it's always a question of optimising memory...

Yeah, it's always a question of optimising memory or speed. The Amiga is so flexible in terms of it's display that it becomes a giant (but ultimately IMHO satisfying) puzzle to try and solve.

I'm...
Forum: Coders. Asm / Hardware 03 August 2020, 13:20
Replies: 69
Views: 3,074
Posted By roondar
One thing I've never really been clear on is the...

One thing I've never really been clear on is the cost of updating the Copperlist.

It seems to me that any discussion on Copper blitting (as a way to gain performance) kind of glosses over the...
Forum: Coders. Asm / Hardware 02 August 2020, 12:54
Replies: 69
Views: 3,074
Posted By roondar
I'm not too sure of that actually. Coin ups...

I'm not too sure of that actually.

Coin ups generally use sprites, which tend to have easy to use coordinate systems already. For example: looking at the small amount of CPS1 documentation that...
Forum: Coders. Asm / Hardware 02 August 2020, 01:41
Replies: 69
Views: 3,074
Posted By roondar
Minor question: that article is still online on...

Minor question: that article is still online on my website, did you have problems reaching it? Or is there another reason you linked through web.archive.org?


AFAIK/IIRC they use at least three...
Forum: Retrogaming General Discussion 30 July 2020, 10:14
Replies: 67
Views: 2,551
Posted By roondar
The problem is apparently that RTG graphics on...

The problem is apparently that RTG graphics on the Amiga are still normally on a fairly slow bus, which means the gains over native graphics are going to be limited*. Doom really likes fast memory...
Forum: Coders. AMOS 30 July 2020, 10:05
Replies: 15
Views: 566
Posted By roondar
Like Thomas said, you probably meant Kickstart...

Like Thomas said, you probably meant Kickstart 37.175.
Kickstart revision 37.175 is version 2.04 or 2.05. Workbench revision 40.42 is version 3.1.

Now, I'm not entirely sure if Workbench 3.1 is...
Forum: Coders. AMOS 29 July 2020, 16:57
Replies: 15
Views: 566
Posted By roondar
The 0003 in the alert error message denotes the...

The 0003 in the alert error message denotes the problem lies with the OpenLibrary function. This makes me suspect the version of ed you're using may not be compatible with the Workbench and/or...
Forum: OT - General 28 July 2020, 11:58
Replies: 21
Views: 1,407
Posted By roondar
Cancel culture is not and never has been about...

Cancel culture is not and never has been about "calling people out". That already happened way before it.

Cancel culture is about forcefully silencing dissent on any topic the cancelers happen to...
Forum: support.Apps 28 July 2020, 10:01
Replies: 4
Views: 375
Posted By roondar
The ACA500+ uses a 68000 clocked at a higher...

The ACA500+ uses a 68000 clocked at a higher speed. FBlit requires a 68020 or above. Sadly it won't work with an ACA500+ unless you use it's option to attach a turbo card :(

Here's the minimum...
Forum: Amiga scene 26 July 2020, 17:56
Replies: 56
Views: 3,786
Posted By roondar
Both versions look similar to me. The main...

Both versions look similar to me. The main difference seems to be the background layer is now much more advanced with all kinds of line scrolling, etc added.

The parallax effects look awesome by...
Forum: Retrogaming General Discussion 26 July 2020, 17:50
Replies: 67
Views: 2,551
Posted By roondar
Yup, I've played DOOM on Amiga. Both using ADoom...

Yup, I've played DOOM on Amiga. Both using ADoom and DoomAttack. To be fair, I only first did that years after initial release though.

That said, it works better than I expected.
Forum: Coders. General 25 July 2020, 16:12
Replies: 131
Views: 17,884
Posted By roondar
Ah, the reason this isn't faster on OCS is...

Ah, the reason this isn't faster on OCS is because both the Blitter and CPU are limited to 16 bits per bus access*, so if you run both at the same time you're effectively just switching which chip...
Forum: Coders. General 25 July 2020, 13:16
Replies: 131
Views: 17,884
Posted By roondar
I love a good puzzle, so here's some idea's I...

I love a good puzzle, so here's some idea's I had. Obviously I haven't seen your code, so I may be saying things that are impractical or already being done. Still, I hope they might be helpful...
Forum: support.Hardware 23 July 2020, 13:44
Replies: 10
Views: 457
Posted By roondar
Sounds logical. Thanks for the info!

Sounds logical. Thanks for the info!
Forum: support.Hardware 23 July 2020, 13:24
Replies: 10
Views: 457
Posted By roondar
I'm not sure how it works internally in the chip,...

I'm not sure how it works internally in the chip, but the Hardware Reference Manual states:

So I guess there is some limitation in Denise which stops it from being possible. Perhaps someone else...
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