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Forum: Amiga scene Today, 20:21
Replies: 1,094
Views: 72,932
Posted By grond
As someone who did transistor-level microchip...

As someone who did transistor-level microchip development in Cadence I'm curious to learn how that would have worked. Do you mean by changing an NMOS component library for a CMOS one?
Forum: Amiga scene Today, 17:52
Replies: 1,094
Views: 72,932
Posted By grond
Nobody needed 32 address lines until some time...

Nobody needed 32 address lines until some time this millenium. 24 bit address lines were enough for consumer computers until the mid-90s. A 32 bit data bus, on the other hand, should have been...
Forum: Amiga scene Yesterday, 08:09
Replies: 1,094
Views: 72,932
Posted By grond
The point was that NMOS logic circuits are...

The point was that NMOS logic circuits are different from CMOS circuits because of all the complementary logic in the pull-up paths that CMOS logic has where NMOS logic only uses resistors or single...
Forum: Amiga scene 27 March 2020, 14:56
Replies: 1,094
Views: 72,932
Posted By grond
Obsolete chip fabs have a big disadvantage in...

Obsolete chip fabs have a big disadvantage in that they need more wafer space for the same functionality which is the biggest cost driving factor in chip production. Yield also drops exponentially...
Forum: Coders. General 26 March 2020, 12:45
Replies: 19
Views: 1,029
Posted By grond
I'm not sure what you mean. All possible...

I'm not sure what you mean. All possible differences between two 4bit values are either odd or even. The even differences will always average to one of the original 4bit values and no new value....
Forum: Coders. General 26 March 2020, 09:13
Replies: 19
Views: 1,029
Posted By grond
I don't think this is correct. You can get twice...

I don't think this is correct. You can get twice as many shades of each R, G, and B component. This means that instead of a 12 bit palette we should get a 15 bit palette, hence, 32768 colours which...
Forum: Amiga scene 17 March 2020, 14:09
Replies: 887
Views: 93,208
Posted By grond
They change horses in mid-race?

They change horses in mid-race?
Forum: Nostalgia & memories 12 March 2020, 07:09
Replies: 149
Views: 11,736
Posted By grond
I was twelve and with the amount of pocket money...

I was twelve and with the amount of pocket money I got at the time saving for a C=64 would have meant waiting until I would have been 15.
Forum: Nostalgia & memories 11 March 2020, 16:31
Replies: 149
Views: 11,736
Posted By grond
A rich kid in my neighbourhood had a C=64 with...

A rich kid in my neighbourhood had a C=64 with 1541. I saved all my pocket money and eventually bought a C=16 with datasette for 149DM. Then the rich kid got an A500/1084S combo for his birthday. I...
Forum: Amiga scene 10 March 2020, 14:37
Replies: 164
Views: 11,380
Posted By grond
If there is any abuse, there is also a legal...

If there is any abuse, there is also a legal remedy against it. The trademark system seems quite reasonable to me but I'm only a professional in the field... ;)
Forum: Amiga scene 09 March 2020, 18:03
Replies: 164
Views: 11,380
Posted By grond
You don't need to have a product in order to...

You don't need to have a product in order to register a trademark. Usually you register your trademark before you finished developing a product. There are even trademark designers who invent kewl...
Forum: support.Hardware 09 March 2020, 15:47
Replies: 12
Views: 654
Posted By grond
The A3000T is some of the rarest Amiga gear there...

The A3000T is some of the rarest Amiga gear there is. Be sure to keep it in good condition.
Forum: Amiga scene 09 March 2020, 11:04
Replies: 164
Views: 11,380
Posted By grond
Well, since the community is so small, how and...

Well, since the community is so small, how and why would anyone think that there is an alternative source for A1200 cases?
Forum: Amiga scene 09 March 2020, 08:03
Replies: 164
Views: 11,380
Posted By grond
No, they need not have an agreement to allow...

No, they need not have an agreement to allow rebranding. If rebranding is _not_ to be allowed, it needs to be stated in the purchase contract.
Forum: Amiga scene 09 March 2020, 06:57
Replies: 164
Views: 11,380
Posted By grond
It is absolutely normal and legal that goods are...

It is absolutely normal and legal that goods are relabeled. It happens all the time. The original manufacturer got paid for the cases, why the drama?
Forum: Retrogaming General Discussion 08 March 2020, 11:01
Replies: 96
Views: 5,564
Posted By grond
Same here using lzdoom on an old x86 PC. No...

Same here using lzdoom on an old x86 PC. No mission texts and no finish stats (were there any in AB3D?) after completing a level. Btw, was AB3D really that difficult? I needed a few attempts to...
Forum: New to Emulation or Amiga scene 07 March 2020, 11:32
Replies: 31
Views: 2,126
Posted By grond
Yes, I understand the concept of memory...

Yes, I understand the concept of memory protection. I learned ASM on the Amiga and have been using Linux ever since I put my Amiga away. But I wouldn't even know how to do a printf("Hello World!\n");...
Forum: Retrogaming General Discussion 07 March 2020, 10:34
Replies: 23
Views: 1,491
Posted By grond
My new Amiga would have a GHz 68k processor...

My new Amiga would have a GHz 68k processor pretty much like the 080 but with an SSE type coprocessor unit on top. It would look like a computer keyboard but the cable coming out its back would be...
Forum: Nostalgia & memories 05 March 2020, 17:13
Replies: 33
Views: 1,263
Posted By grond
I'd choose phxass.

I'd choose phxass.
Forum: New to Emulation or Amiga scene 03 March 2020, 17:05
Replies: 31
Views: 2,126
Posted By grond
Excuse my ignorance, but doesn't Linux make it...

Excuse my ignorance, but doesn't Linux make it very difficult to do anything fun, i.e. read from and write to hardware, with your assembly code?
Forum: Retrogaming General Discussion 02 March 2020, 17:32
Replies: 96
Views: 5,564
Posted By grond
AB3D with its horrible copper-chunky screen...

AB3D with its horrible copper-chunky screen desperately needed this sort of facelift, The Killing Grounds has a more eye pleasing resolution and thus IMO is of lower interest for this sort of...
Forum: New to Emulation or Amiga scene 02 March 2020, 13:52
Replies: 31
Views: 2,126
Posted By grond
I think it is worth mentioning that with UAE...

I think it is worth mentioning that with UAE there is a very good Amiga emulator that has some very useful built-in debugging tools.
Forum: Retrogaming General Discussion 01 March 2020, 19:47
Replies: 96
Views: 5,564
Posted By grond
Has anyone made this run on linux? My...

Has anyone made this run on linux? My distribution only has a slightly outdated gzdoom and I get some script error on startup. I haven't had time to dig into this.
Forum: Coders. Asm / Hardware 27 February 2020, 17:50
Replies: 32
Views: 1,575
Posted By grond
I'm not going to part with mine... ;)

I'm not going to part with mine... ;)
Forum: Coders. Asm / Hardware 27 February 2020, 10:25
Replies: 32
Views: 1,575
Posted By grond
I very much liked this book:...

I very much liked this book: https://gitlab.com/amigasourcecodepreservation/amiga-assembler-von-null-auf-hundert

While the title doesn't really indicate it, it is just as much about OS coding on...
Forum: Retrogaming General Discussion 26 February 2020, 18:06
Replies: 143
Views: 6,575
Posted By grond
Well, it is an intro. We can only guess how much...

Well, it is an intro. We can only guess how much of it is precomputed. There is no need for any type of collision checks, AI or whatever. It also seems there are less objects in the intro than in the...
Forum: Retrogaming General Discussion 26 February 2020, 16:52
Replies: 143
Views: 6,575
Posted By grond
Well, about one third is filled with static...

Well, about one third is filled with static information...
Forum: Coders. Asm / Hardware 26 February 2020, 16:33
Replies: 32
Views: 1,575
Posted By grond
Yes, but because ThoR likes to chime in with a...

Yes, but because ThoR likes to chime in with a lot of very detailed but unrelated technical information, I wanted to present the original question to him again. He is a very knowledgable guy after...
Forum: Coders. Asm / Hardware 26 February 2020, 14:38
Replies: 32
Views: 1,575
Posted By grond
That's why I wrote "AmigaOS pointers" as opposed...

That's why I wrote "AmigaOS pointers" as opposed to just "pointers". For all other pointers the user should have control anyway. As so often, everything you write in reply to my message seems to be...
Forum: Retrogaming General Discussion 26 February 2020, 14:32
Replies: 61
Views: 4,545
Posted By grond
The same goes for all those many people who...

The same goes for all those many people who constantly feel the need to express their desinterest or disdain for the Vampire. For unknown reasons there does not seem to be a middleground.



...
Forum: Retrogaming General Discussion 26 February 2020, 14:30
Replies: 61
Views: 4,545
Posted By grond
For all I know a rather small portion of the...

For all I know a rather small portion of the A4000s sold were 040-A4000s. Since the 040-CPU board installed by Commodore sucked so badly, most people rather bought an 030 and then installed a proper...
Forum: Coders. Asm / Hardware 26 February 2020, 08:56
Replies: 32
Views: 1,575
Posted By grond
I thought all AmigaOS pointers were long-aligned...

I thought all AmigaOS pointers were long-aligned anyway (OK, A7 could be set to a word boundary; btw, are you really sure you want to do that sub on A7?). If so, all it would need to turn an AmigaOS...
Forum: Retrogaming General Discussion 25 February 2020, 18:30
Replies: 143
Views: 6,575
Posted By grond
C compiler code that cares little for...

C compiler code that cares little for superscalarity.




If we are talking about Amiga planar modes, that would be 7 MB/s for AGA and A3000-ECS (32bit buswidth) and 3.5 MB/s for OCS and...
Forum: Retrogaming General Discussion 25 February 2020, 17:13
Replies: 143
Views: 6,575
Posted By grond
It's a rough estimate. If you use bitfield...

It's a rough estimate. If you use bitfield instructions, the 080 will be much, much faster than the 10x figure given. Same for other specific code or even 080-exclusive code. If we are talking about...
Forum: Retrogaming General Discussion 25 February 2020, 10:28
Replies: 143
Views: 6,575
Posted By grond
Funny how considering lowering the minimum specs...

Funny how considering lowering the minimum specs to 060-based systems then led to people suggesting including 040 systems (a Vampire is ten times the speed of an 040...) and now we are even getting...
Forum: Coders. General 06 February 2020, 14:23
Replies: 69
Views: 4,991
Posted By grond
This can be done with the palette. You just need...

This can be done with the palette. You just need a lot of black (sky) and white (stars) colours in your palette. This means the tile can still be there but all its colours map to black and white only...
Forum: Coders. General 06 February 2020, 12:56
Replies: 69
Views: 4,991
Posted By grond
Memory impact of the pre-render can be reduced a...

Memory impact of the pre-render can be reduced a lot. Some ideas:

You only need octants of each image because of the circular symmetry. Quadrants will reduce less but make the handling very easy....
Forum: Coders. General 05 February 2020, 12:47
Replies: 69
Views: 4,991
Posted By grond
Ah, yes, this is more likely. Basically the...

Ah, yes, this is more likely. Basically the bricks are a checkerboard pattern (i.e. one tile uses e.g. colours 0..., neighbouring tile colours 16...) and each tile gives some time to change the...
Forum: Coders. General 05 February 2020, 12:39
Replies: 69
Views: 4,991
Posted By grond
Not even with just two or three bitplanes?

Not even with just two or three bitplanes?
Forum: Coders. General 05 February 2020, 11:18
Replies: 69
Views: 4,991
Posted By grond
I would assume it uses a large LUT that basically...

I would assume it uses a large LUT that basically maps screen coordinates into polar tile coordinates like all those rotator and tunnel effects in the demos do. Add a constant offset that changes per...
Showing results 1 to 40 of 740

 
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