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Forum: Retrogaming General Discussion 04 December 2019, 19:11
Replies: 79
Views: 3,352
Posted By roondar
Perhaps I expressed that too strongly. I mean to...

Perhaps I expressed that too strongly. I mean to say that while it's an improvement, it's still blurring more than my CRT does. Still visible to me anyway. Personally, I also feel the difference in...
Forum: Coders. Asm / Hardware 04 December 2019, 18:50
Replies: 12
Views: 581
Posted By roondar
COP1LC should be set before the Copper list...

COP1LC should be set before the Copper list starts to execute, which is directly after VBLANK. However, if you set it late the change will just take effect one frame later. Unless you're continuously...
Forum: Retrogaming General Discussion 04 December 2019, 18:45
Replies: 79
Views: 3,352
Posted By roondar
I happen to have monitor that can do this. Also...

I happen to have monitor that can do this. Also seen it used by others. Now, I love my monitor - modern screens are great for all but retro games. That said...

IMHO black frame insertion does not...
Forum: support.WinUAE 04 December 2019, 01:02
Replies: 17
Views: 382
Posted By roondar
I think disabling aspect ratio correction might...

I think disabling aspect ratio correction might be the 'trick'. Whenever that's on I notice some lines being thicker than others (and that seems to extends to the scanlines as well).

My guess it's...
Forum: Retrogaming General Discussion 04 December 2019, 00:57
Replies: 79
Views: 3,352
Posted By roondar
I read that as meaning motion blur, which is an...

I read that as meaning motion blur, which is an inherent flaw of LCD/LED technology. It's the main reason that I still find scrolling nicer on my old CRT.
Forum: Retrogaming General Discussion 30 November 2019, 23:31
Replies: 21
Views: 914
Posted By roondar
I've always like the C64's music best of the home...

I've always like the C64's music best of the home versions. The Amiga's music is pretty good too, though it feels too fast to me and I don't like the drums much. Megadrive version has good music but...
Forum: Coders. General 30 November 2019, 23:12
Replies: 106
Views: 2,524
Posted By roondar
I don't know the cause for this discrepancy, but...

I don't know the cause for this discrepancy, but I am certain it has nothing to do with the difference between external and internal timing itself. Some of my own programs have had performance...
Forum: Nostalgia & memories 30 November 2019, 16:50
Replies: 34
Views: 830
Posted By roondar
Last boxed game I bought back in the day was...

Last boxed game I bought back in the day was Alien Breed 3D II.
Last boxed game I bought recently was RGCD's Tiger Claw.
Forum: Coders. General 30 November 2019, 16:45
Replies: 106
Views: 2,524
Posted By roondar
Please understand I'm not trying to make a big...

Please understand I'm not trying to make a big deal out of this. But I respectfully disagree here. In my view your figures show a pretty big margin of error for measuring using amtime:
That's a...
Forum: Coders. General 28 November 2019, 11:53
Replies: 106
Views: 2,524
Posted By roondar
About the time measuring... Measuring the total...

About the time measuring... Measuring the total execution time of the program rather than just the part of the code that you've changed will obviously report a lower percentage improvement than...
Forum: Coders. Asm / Hardware 15 November 2019, 17:45
Replies: 4
Views: 244
Posted By roondar
The numbers you mention seem wrong, a move from...

The numbers you mention seem wrong, a move from d(an,ix) is never as low as 10 cycles. For reference, I use this site for my CPU timing info:...
Forum: Coders. Asm / Hardware 15 November 2019, 17:30
Replies: 11
Views: 483
Posted By roondar
Thanks for the info, I'll make the required...

Thanks for the info, I'll make the required changes to do this :great

One follow-up question: do either of you know where this is documented (I assume it's in the HRM and I just missed it), as I'd...
Forum: Retrogaming General Discussion 15 November 2019, 17:00
Replies: 214
Views: 18,010
Posted By roondar
That's interesting news... Would be awesome if...

That's interesting news... Would be awesome if that source were to be allowed to be spread around.
Forum: Amiga scene 15 November 2019, 16:59
Replies: 35
Views: 2,801
Posted By roondar
I'd love to have a 68060 accelerator for my...

I'd love to have a 68060 accelerator for my A1200, but it really, really, really needs a software/firmware way to temporarily turn it off (ideally by simply holding a button on boot like the Blizzard...
Forum: request.Other 15 November 2019, 16:56
Replies: 9
Views: 847
Posted By roondar
This is a much to serious reply to this thread,...

This is a much to serious reply to this thread, but here goes:

I'm pretty sure there's no such thing as military spec Amiga's. But if they truly exist (as in not that silly stuff linked to above),...
Forum: Coders. Asm / Hardware 15 November 2019, 16:54
Replies: 11
Views: 483
Posted By roondar
Question Correctly setting up an interlace screen

I have a small question: how do you correctly set up an interlaced screen in a HW banging no OS present situation?

That is, I know which bits to set in BPLCON0 and I do get an interlaced screen,...
Forum: Coders. General 14 November 2019, 16:27
Replies: 49
Views: 3,533
Posted By roondar
Just a thought... You could perhaps opt for...

Just a thought... You could perhaps opt for having each enemy consist of two bobs: one main and one propeller. That way you'd only need to store a few different propellers for all enemies combined.
...
Forum: project.EAB 14 November 2019, 16:24
Replies: 15
Views: 645
Posted By roondar
Hmm, warnings etc for consistently going...

Hmm, warnings etc for consistently going off-topic. I'll consider myself warned ahead of time :D

(my self deprecation aside, this is actually a good rule :great)
Forum: Coders. Asm / Hardware 11 November 2019, 10:35
Replies: 17
Views: 961
Posted By roondar
Apart from the method Ross used, there is a...

Apart from the method Ross used, there is a 'cheat' of sorts here as well. I use the following:


Draw the top and/or bottom status panel using colour 1 as background instead of colour 0
Draw...
Forum: Coders. Asm / Hardware 07 November 2019, 23:07
Replies: 17
Views: 961
Posted By roondar
I can certainly give it a try :) Let's start...

I can certainly give it a try :)

Let's start with the easy ones: diwstart, diwstrop, ddfstrt & ddfstop
These will be the same as usual (as in, the same as for a 320x256 display). To see why,...
Forum: Coders. General 07 November 2019, 22:39
Replies: 2,263
Views: 347,318
Posted By roondar
The A500 is a bit confusing in that several...

The A500 is a bit confusing in that several revision of it existed and some of those revisions had the ECS Agnus in it. Mine was one of those, after cutting a trace of the board I got 1MB chip...
Forum: support.Hardware 07 November 2019, 16:41
Replies: 13
Views: 746
Posted By roondar
I suppose you could do something janky with that...

I suppose you could do something janky with that little hole next to the mouse ports. Though it might not be big enough for CF cards and some expansions already use it (my Indivision AGA came with a...
Forum: Coders. Asm / Hardware 07 November 2019, 16:22
Replies: 17
Views: 961
Posted By roondar
I want to point out something. While DanScott &...

I want to point out something. While DanScott & meynaf are 100% correct and I agree that having a Blitter routine that clips properly is a very good thing to have and code, there is an alternative...
Forum: Amiga scene 07 November 2019, 16:16
Replies: 268
Views: 26,734
Posted By roondar
I can confirm the Blitter does not get the extra...

I can confirm the Blitter does not get the extra cycle for this type of blit. Even better for this scenario, neither does bitplane DMA - the idle cycle can be freely used by the CPU.

Recently...
Forum: Retrogaming General Discussion 06 November 2019, 11:21
Replies: 79
Views: 3,352
Posted By roondar
I absolutely love the look of Amiga graphics over...

I absolutely love the look of Amiga graphics over a period accurate CRT monitor like the CM8833 or 1084S, scanlines included. It's also crystal clear to me that the graphics were designed with the...
Forum: Coders. Contest 06 November 2019, 01:22
Replies: 1,679
Views: 124,496
Posted By roondar
I can't fix the score bombing by those muppets......

I can't fix the score bombing by those muppets...
But I have added my vote. And guess what.. It ain't no 1.
Forum: Amiga scene 06 November 2019, 00:40
Replies: 268
Views: 26,734
Posted By roondar
I can respect not liking 2x2 rendering, but it...

I can respect not liking 2x2 rendering, but it considering what's being attempted here I don't see any other option. Remember, even Doom did 2x2 rendering for the main part of the screen in...
Forum: Amiga scene 06 November 2019, 00:32
Replies: 268
Views: 26,734
Posted By roondar
Look, I genuinely like your out-of-the-box...

Look, I genuinely like your out-of-the-box thinking. But this just doesn't seem like a very realistic solution.

I'm not saying it definitely can't be done, but you're essentially suggesting...
Forum: Amiga scene 06 November 2019, 00:22
Replies: 268
Views: 26,734
Posted By roondar
The point is that even at 160x100 the theoretical...

The point is that even at 160x100 the theoretical maximum frame rate when you're not doing anything except drawing with the Blitter is not far from the one the current CPU drawing routines get (16fps...
Forum: Amiga scene 06 November 2019, 00:16
Replies: 268
Views: 26,734
Posted By roondar
That is 1 million pixels per second@1 bitplane,...

That is 1 million pixels per second@1 bitplane, so you must divide that by the number of bitplanes to get an accurate figure. Meaning for a 4 bitplane screen it's 250.000 pixels per second, not 1...
Forum: Amiga scene 05 November 2019, 23:54
Replies: 268
Views: 26,734
Posted By roondar
Isn't that too slow to be useful? Remember, the...

Isn't that too slow to be useful? Remember, the Blitter only draws a single pixel@1 bitplane in 8 CPU cycles when in line mode.
Forum: Coders. Asm / Hardware 04 November 2019, 18:23
Replies: 34
Views: 2,036
Posted By roondar
Amiga sprites work very well in vertical...

Amiga sprites work very well in vertical shooters: you can often make the player and/or all of the player bullets into sprites, or alternatively make all enemy bullets sprites. Both work fit the...
Forum: Coders. Asm / Hardware 04 November 2019, 18:20
Replies: 29
Views: 1,314
Posted By roondar
I can confirm that on my Blizzard 1230MK IV data...

I can confirm that on my Blizzard 1230MK IV data burst is normally off. I've tried to manually activate it and found no performance benefit whatsoever, so maybe it's off for the reason grond...
Forum: Coders. General 03 November 2019, 14:10
Replies: 274
Views: 10,406
Posted By roondar
When you talk about impact, do you mean the...

When you talk about impact, do you mean the impact in lost performance?
If that is the case, don't worry about it - a Copper move only takes up 2 DMA slots out of about 70.000 per frame. A wait is...
Forum: OT - General 02 November 2019, 13:47
Replies: 9
Views: 657
Posted By roondar
You make some excellent points there, I agree...

You make some excellent points there, I agree with all of them.

On a side-note: my life on the forum has improved immeasurably since I've started to mostly ignore the VS threads and all of the...
Forum: Retrogaming General Discussion 01 November 2019, 12:09
Replies: 50
Views: 1,908
Posted By roondar
On the ST: apparently it was designed at a record...

On the ST: apparently it was designed at a record pace - mostly using chips and technology that Atari already had in store or could be gotten off the shelves. It's quite amazing how many they managed...
Forum: Coders. General 01 November 2019, 12:05
Replies: 274
Views: 10,406
Posted By roondar
This makes me consider a trick I once heard was...

This makes me consider a trick I once heard was used in some demos (sorry, this is rather off-topic - I'll keep it short and not do ten posts about it): apparently you can use HAM mode to get 'free'...
Forum: Retrogaming General Discussion 01 November 2019, 11:46
Replies: 50
Views: 1,908
Posted By roondar
There was also The Misadventures of Flink...

There was also The Misadventures of Flink (http://hol.abime.net/577) for the CD32, which I always thought looked very nice. Apparently it's a very nice game to play as well.

Edit:

I think...
Forum: Coders. General 01 November 2019, 11:02
Replies: 274
Views: 10,406
Posted By roondar
AFAIK deimos has stopped making two versions and...

AFAIK deimos has stopped making two versions and has decided to only look into the CPU only version (with Blitter limited to clearing the screen).

Which is why I said it shouldn't matter much if...
Forum: Coders. General 01 November 2019, 10:53
Replies: 274
Views: 10,406
Posted By roondar
I don't think it'll make much of a difference for...

I don't think it'll make much of a difference for this particular game. AGA bandwidth features are mostly useful for the Blitter or when using lots of bitplanes. For anything 4 bitplanes and less,...
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