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Search: Posts Made By: grond
Forum: News 20 October 2019, 08:36
Replies: 20
Views: 2,736
Posted By grond
The Vampire AGA core you are mentioning is from...

The Vampire AGA core you are mentioning is from 2017. The 080 bitfield instructions were fixed long ago. If you look at the V4, you'll see that there is no problem.
Forum: Amiga scene 05 September 2019, 10:34
Replies: 190
Views: 16,627
Posted By grond
I totally agree! I couldn't enjoy listening to...

I totally agree! I couldn't enjoy listening to music within the FPS action part, it would totally distract me from the game. AB3D did a perfect job with the foot step sound changing with the ground...
Forum: Amiga scene 04 September 2019, 09:55
Replies: 190
Views: 16,627
Posted By grond
@KK/Altair: About the dithering, have you...

@KK/Altair:

About the dithering, have you tried how shifting the repeated line by one pixel looks? This should come for free and might break up the vertical line (but might as well look even...
Forum: support.Hardware 27 August 2019, 10:41
Replies: 29
Views: 2,008
Posted By grond
Your welcome, although that is no secret. ...

Your welcome, although that is no secret.








I think some of those SCSI controllers can be set to not use DMA. With the Z2 bus limited to something like 3.5 MB/s, the V500's internal...
Forum: support.Hardware 26 August 2019, 13:53
Replies: 29
Views: 2,008
Posted By grond
The only thing that has changed is the amount of...

The only thing that has changed is the amount of deliberate badmouthing of the Vampire since more and more people got one to try for themselves. The status of Z2 cards in an A2000 has not changed...
Forum: support.Hardware 30 July 2019, 15:16
Replies: 35
Views: 2,000
Posted By grond
While I personally think the 233 MHz 060 number...

While I personally think the 233 MHz 060 number only holds for some specific tasks and other than that is exaggerated, for all I know the 080 is faster than a 100 MHz 060 (but a lot closer to 100 MHz...
Forum: support.Hardware 29 July 2019, 13:10
Replies: 35
Views: 2,000
Posted By grond
Is it?

Is it?
Forum: support.Hardware 29 July 2019, 08:35
Replies: 35
Views: 2,000
Posted By grond
No, the Amiga is lacking too much software to...

No, the Amiga is lacking too much software to begin with. Of your list a Vampire Amiga can do:


surf html-only web sites
watch Youtube by using videoconversion sites
play mp3s
watch videos in...
Forum: Amiga scene 26 July 2019, 17:14
Replies: 823
Views: 43,641
Posted By grond
Perhaps one of the PC's biggest advantages in the...

Perhaps one of the PC's biggest advantages in the 90s was that it allowed its owners to delude themselves with regard to the money spent on upgrades. Let's get a new graphics card, let's get a...
Forum: Amiga scene 26 July 2019, 14:53
Replies: 378
Views: 29,727
Posted By grond
The mode switching on x86 processors has to do...

The mode switching on x86 processors has to do with the (old and deprecated) FPU instruction opcodes being reused for encoding MMx instructions. This is not the case for AMMx where AMMx and FPU...
Forum: support.Hardware 26 July 2019, 14:19
Replies: 41
Views: 7,005
Posted By grond
I'm pretty sure the CS-Lab guys will build and...

I'm pretty sure the CS-Lab guys will build and sell the boards themselves.
Forum: Amiga scene 26 July 2019, 13:10
Replies: 14
Views: 1,700
Posted By grond
Thanks!

Thanks!
Forum: Amiga scene 26 July 2019, 12:51
Replies: 14
Views: 1,700
Posted By grond
Is there any explanation about what one has to do...

Is there any explanation about what one has to do in that type of game? "Chip's Challenge" get a very decent score just above 8 on lemonamiga...
Forum: support.Hardware 26 July 2019, 12:34
Replies: 41
Views: 7,005
Posted By grond
That looks like a great product and certainly...

That looks like a great product and certainly more real than any rumoured ACA1240/1260! No wonder Jens is leaving the Amiga business.
Forum: Amiga scene 26 July 2019, 11:34
Replies: 823
Views: 43,641
Posted By grond
From my point of view all our discussion was...

From my point of view all our discussion was about how in detail Commodore presented too little of an upgrade with the A1200. Looking at the details required looking at what they could have and...
Forum: News 26 July 2019, 07:23
Replies: 167
Views: 31,922
Posted By grond
Yes and no. The 080 has additional registers...

Yes and no. The 080 has additional registers which the FPU can use. The higher number of registers is useful for matrix operations for which the only eight registers of the original FPU aren't enough...
Forum: Amiga scene 25 July 2019, 18:43
Replies: 378
Views: 29,727
Posted By grond
I would like to see your setup running on a real...

I would like to see your setup running on a real 060+RTG Amiga.
Forum: Amiga scene 25 July 2019, 13:48
Replies: 823
Views: 43,641
Posted By grond
BTW, RESHOOT-R is technically a great game and...

BTW, RESHOOT-R is technically a great game and those overlays would not have been possible with PC graphics cards of the 90s or with just an 8 bit chunky mode. It would definitely have done well...
Forum: Amiga scene 25 July 2019, 13:12
Replies: 823
Views: 43,641
Posted By grond
Well, I stated many times that a CPU grade made a...

Well, I stated many times that a CPU grade made a three-digit difference in the major currencies. The hypothetical Amiga-saviour computers I described would have come out instead of the A3000 and...
Forum: Amiga scene 24 July 2019, 17:39
Replies: 823
Views: 43,641
Posted By grond
Regarding the "one CPU grade didn't make much of...

Regarding the "one CPU grade didn't make much of a difference" discussion:

I was kindly pointed to one ad and a test report from March 1991. The test report lists the following prices for...
Forum: Amiga scene 24 July 2019, 15:24
Replies: 823
Views: 43,641
Posted By grond
Unfortunately I haven't found any price info on...

Unfortunately I haven't found any price info on the A3000 16 MHz vs. the A3000 25 MHz yet. I'm pretty sure that that CPU grade difference meant a very significant price difference in 1990.



...
Forum: Amiga scene 24 July 2019, 14:01
Replies: 823
Views: 43,641
Posted By grond
I googled a bit an found an ad with these prices:...

I googled a bit an found an ad with these prices:

A600: 549 DM
A600+40MB HDD: 948 DM

A1200: 889 DM
A1200+64MB HDD: 1450 DM
A1200+130MB HDD:...
Forum: Amiga scene 23 July 2019, 15:43
Replies: 823
Views: 43,641
Posted By grond
AA+ is pretty much what AGA should have been. The...

AA+ is pretty much what AGA should have been. The developer's comment quoted in the wiki-article translates to "AA+ was going to have all the things we would have done if the AA project had had...
Forum: Amiga scene 23 July 2019, 12:53
Replies: 823
Views: 43,641
Posted By grond
Actually, you have numerous times claimed that it...

Actually, you have numerous times claimed that it didn't make much of a difference to a point where you found it nigligible. It clearly wasn't.




Your argumentation with regard to Doom on...
Forum: Coders. Asm / Hardware 22 July 2019, 13:46
Replies: 38
Views: 1,965
Posted By grond
I find your test results very interesting! And...

I find your test results very interesting! And yes, it seems very plausible that the 030 trashes an entire cacheline by only fetching one unneeded instruction after the branching instruction at the...
Forum: Amiga scene 22 July 2019, 13:39
Replies: 823
Views: 43,641
Posted By grond
The A3000 came at the height of the Amiga's...

The A3000 came at the height of the Amiga's popularity. It was ridiculously expensive and lacked colours and colour resolution. If it had had a chunky-AGA chipset, a cut-down version of it in 1991...
Forum: Amiga scene 22 July 2019, 13:31
Replies: 823
Views: 43,641
Posted By grond
Actually it would suffice to hexedit the binary...

Actually it would suffice to hexedit the binary but I guess that is out of reach, too.




I understand your points but I think that indeed you can still (or again) optmise code that is written...
Forum: News 22 July 2019, 12:56
Replies: 50
Views: 5,153
Posted By grond
And this is supposed to work on say an...

And this is supposed to work on say an overclocked 060 in an Amiga 4000 with CyberGfx?
Forum: Coders. Asm / Hardware 19 July 2019, 16:06
Replies: 38
Views: 1,965
Posted By grond
64 cache "lines" of 4 bytes or 4 sets of 64...

64 cache "lines" of 4 bytes or 4 sets of 64 bytes? In other word, a 256byte loop would have to be aligned to longs or to 64 bytes? The latter would be pretty bad.
Forum: Coders. Asm / Hardware 19 July 2019, 14:46
Replies: 38
Views: 1,965
Posted By grond
Do you know any alignment restrictions for the...

Do you know any alignment restrictions for the 256 bytes instruction cache? AFAIK the 256 bytes are organised in 16 cache lines of 16 bytes each. I assume a 256-byte loop thus should be aligned to...
Forum: Amiga scene 19 July 2019, 14:43
Replies: 823
Views: 43,641
Posted By grond
Which is why you can safely conclude that the...

Which is why you can safely conclude that the Amiga Doom was optimised quite a lot more in the several years from the publication of PC Doom and Mac Doom to Amiga Doom. This makes comparisons across...
Forum: Coders. Asm / Hardware 19 July 2019, 13:40
Replies: 38
Views: 1,965
Posted By grond
Does the 68020 instruction cache cache...

Does the 68020 instruction cache cache instructions that are in chipmem? Data obviously can change due to the blitter and so on but code should not (but might anyway).
Forum: Amiga scene 18 July 2019, 17:55
Replies: 823
Views: 43,641
Posted By grond
And they all sucked. :D May be. If...

And they all sucked. :D




May be. If you really want to know it exactly, you will have to compare 030s to 030s, though. The rough estimate I made is good enough for me. My point was that a 33...
Forum: Amiga scene 18 July 2019, 16:52
Replies: 823
Views: 43,641
Posted By grond
This is a hen vs. egg argument. Game developers...

This is a hen vs. egg argument. Game developers would often have noticed that some approaches just didn't work well with planar modes and thus not continue with a game idea they had. I bet the Last...
Forum: Coders. Asm / Hardware 18 July 2019, 16:40
Replies: 38
Views: 1,965
Posted By grond
Yes, I still don't get your idea. Is it like the...

Yes, I still don't get your idea. Is it like the blitter-assisted c2p? Are you assuming a chipmem-only A1200?
Forum: Amiga scene 18 July 2019, 15:11
Replies: 823
Views: 43,641
Posted By grond
How many times do I have to say that the 4-6...

How many times do I have to say that the 4-6 bitplane planar modes should NOT go away only because there should have been an 8 bit chunky mode? :banghead




That would be interesting to know...
Forum: Coders. Asm / Hardware 18 July 2019, 14:56
Replies: 38
Views: 1,965
Posted By grond
This way of looking at it doesn't make much sense...

This way of looking at it doesn't make much sense to me. Bandwidth TO chipmem is clearly just the 7 MB/s and only the CPU can do that. Bandwidth WITHIN chipmem is what the blitter can do. How do you...
Forum: Amiga scene 18 July 2019, 14:41
Replies: 823
Views: 43,641
Posted By grond
You mean having more than one layer scrolling in...

You mean having more than one layer scrolling in different directions? Because scrolling a chunky layer in hardware is no different from scrolling planar layers.




How many times do I have to...
Forum: Amiga scene 18 July 2019, 14:35
Replies: 823
Views: 43,641
Posted By grond
As for the 14 MHz 020 in a chunky-AGA A1200...

As for the 14 MHz 020 in a chunky-AGA A1200 running Doom in a smaller window: I guess we would need someone willing to edit away the c2p routine in Doom and just run the timedemo (with garbled...
Forum: Amiga scene 18 July 2019, 14:32
Replies: 823
Views: 43,641
Posted By grond
Yes. And for some mysterious reason Commodore...

Yes. And for some mysterious reason Commodore never considered selling upgrades to their computers but left all this market to others. So to them the extra expenditure for slots and connectors was...
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