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Forum: Amiga scene 09 April 2021, 21:58
Replies: 474
Views: 29,376
Posted By grond
@TEG: a second diffusion layer is what you need...

@TEG: a second diffusion layer is what you need to progress from NMOS to CMOS technology. CMOS is a thing of the late 1970s and has the big advantage of being vastly more power efficient than NMOS...
Forum: Amiga scene 09 April 2021, 18:07
Replies: 474
Views: 29,376
Posted By grond
This is not correct. Yes, it becomes increasingly...

This is not correct. Yes, it becomes increasingly difficult to produce chips as the transistor size reduces. However, yield actually improves with shrinking because the same design on a smaller area...
Forum: Amiga scene 03 April 2021, 15:01
Replies: 474
Views: 29,376
Posted By grond
If one thinks it wise to move the Amiga into the...

If one thinks it wise to move the Amiga into the C64-market, then an A300 without IDE and PCMCIA would have made sense. However, that essentially meant giving up on the idea of staying competitive...
Forum: Amiga scene 02 April 2021, 16:44
Replies: 474
Views: 29,376
Posted By grond
We had that already. 2.5" hdds cost about 2.5x as...

We had that already. 2.5" hdds cost about 2.5x as much as they same capacity in a 3.5" form factor.







By 1996 Commodore should have sold 040-based Amigas as minimum configuration. How...
Forum: Amiga scene 02 April 2021, 09:48
Replies: 474
Views: 29,376
Posted By grond
AGA didn't exist when the A600 was designed. And...

AGA didn't exist when the A600 was designed. And ECS added productivity modes which should have been accompanied by a wider chipmem bus and a faster CPU just as in the A3000.
Forum: Amiga scene 01 April 2021, 21:12
Replies: 474
Views: 29,376
Posted By grond
I still don't see any convincing reason the A600...

I still don't see any convincing reason the A600 had to be so small that you could only fit ridiculously expensive laptop hdds (into a desktop computer!) and couldn't fit a full featured expansion...
Forum: support.Hardware 31 March 2021, 13:03
Replies: 19
Views: 1,277
Posted By grond
Gold3 has not been abandoned, work on it will...

Gold3 has not been abandoned, work on it will resume once the V4 reimplementation of AGA is 100% accurate.

I use a small FullHD TV with my V1200 that has both HDMI and SCART inputs. Amiga RGB...
Forum: Amiga scene 26 March 2021, 14:23
Replies: 474
Views: 29,376
Posted By grond
How many were "a few years"? I was looking at...

How many were "a few years"? I was looking at PCMCIA network cards when I already had switched to a laptop PC in 1997 and they still cost 400DM. I had bought the A600 new in 1993 (i.e. four years...
Forum: Amiga scene 25 March 2021, 12:11
Replies: 474
Views: 29,376
Posted By grond
Yes, but that's the only way to do it in the...

Yes, but that's the only way to do it in the A600. The problem is with the A600, not with those accelerators.
Forum: Retrogaming General Discussion 25 March 2021, 10:21
Replies: 194
Views: 8,869
Posted By grond
The way the story is usually told it was mostly a...

The way the story is usually told it was mostly a time saving exercise because they wanted to beat the Amiga to market. The MIDI ports were a last minute addition to compensate for the poor inbuilt...
Forum: Coders. General 25 March 2021, 09:48
Replies: 91
Views: 8,135
Posted By grond
And that was precisely when they only had the...

And that was precisely when they only had the A600 to offer as an "upgrade" over the A500 (cross-reference to the "thrive"-thread). I don't think Commodore couldn't have done better at that point in...
Forum: Amiga scene 25 March 2021, 09:37
Replies: 474
Views: 29,376
Posted By grond
The market and most Amiga-users certainly...

The market and most Amiga-users certainly disagreed. PCMCIA was superfluous at the time as there were hardly any expansions available for it and they cost so much that you would have been better off...
Forum: Amiga scene 23 March 2021, 10:40
Replies: 474
Views: 29,376
Posted By grond
I only got an Amiga in 1993 when there weren't...

I only got an Amiga in 1993 when there weren't many active users around any more from whom I could have copied games. I therefore used to rent games and copy them but the copies often didn't work...
Forum: Amiga scene 22 March 2021, 13:29
Replies: 474
Views: 29,376
Posted By grond
Two of my children actually do look at my Amigas...

Two of my children actually do look at my Amigas and find them interesting. They even like to play games. One interesting thing is that my son played some games on his buddy's PS4 and still also...
Forum: Coders. Asm / Hardware 19 March 2021, 21:46
Replies: 73
Views: 3,427
Posted By grond
You could set up the return address before...

You could set up the return address before installing the irq handler. Then again each time you enter the main loop.





I wouldn't be surprised if both methods were the same on 020/030 but...
Forum: Coders. Asm / Hardware 19 March 2021, 19:42
Replies: 73
Views: 3,427
Posted By grond
I don't need to guess, I know what happens....

I don't need to guess, I know what happens. That's why the first thing the proposed routine would do is to push its start address onto the stack again.




Yes, but how are cycle counts for that...
Forum: Coders. Asm / Hardware 19 March 2021, 19:21
Replies: 73
Views: 3,427
Posted By grond
True. You could push the entry of your main loop...

True. You could push the entry of your main loop onto the stack and JMP into the subroutines. The subroutines would then do a RTS on exit. If an interrupt happened, the minimal interrupt handler...
Forum: Amiga scene 19 March 2021, 19:14
Replies: 474
Views: 29,376
Posted By grond
I find it strange that the Amiga was originally...

I find it strange that the Amiga was originally intended to become a console and then was turned into a computer because of the US American console crisis but for some reason the popularity of...
Forum: Coders. Asm / Hardware 19 March 2021, 15:33
Replies: 73
Views: 3,427
Posted By grond
If you are always doing the JSR from the same...

If you are always doing the JSR from the same place, your minimal interrupt handler could replace the return address on the stack with the entry address of the extended service code such that the JSR...
Forum: Amiga scene 18 March 2021, 14:44
Replies: 474
Views: 29,376
Posted By grond
Who'll look up his address while the rest of us...

Who'll look up his address while the rest of us go fetch our pitchforks? :spin
Forum: support.Hardware 18 March 2021, 14:41
Replies: 40
Views: 2,446
Posted By grond
Right now? In present tense?

Right now? In present tense?
Forum: Amiga scene 18 March 2021, 10:19
Replies: 474
Views: 29,376
Posted By grond
You are talking about the crippled 16bit ECS...

You are talking about the crippled 16bit ECS Commodore put into the A500+ and the A600 and not the full 32bit chipmem bus ECS of the A3000, right?
Forum: Amiga scene 18 March 2021, 10:16
Replies: 474
Views: 29,376
Posted By grond
This is an obvious but nontheless interesting...

This is an obvious but nontheless interesting point. The Mac comes from an era where differences between platforms were still based very much on differences in hardware, barely survived because of...
Forum: Amiga scene 18 March 2021, 10:03
Replies: 474
Views: 29,376
Posted By grond
And they simply wouldn't exist for the Amiga if...

And they simply wouldn't exist for the Amiga if Commodore hadn't aimed for high-margin sales with the A3000. After the A3000 flopped saleswise, Commodore continued to make ECS-Amigas again with only...
Forum: Amiga scene 17 March 2021, 18:33
Replies: 474
Views: 29,376
Posted By grond
I have enjoyed this thread and didn't find it...

I have enjoyed this thread and didn't find it trollish. I found the "evidence" of the contemporary word processors and spreadsheet programs posted above very interesting. It sure shows that the Amiga...
Forum: Amiga scene 17 March 2021, 14:36
Replies: 474
Views: 29,376
Posted By grond
I would assume that lines were doubled vertically...

I would assume that lines were doubled vertically to maintain aspect ratio on today's monitors.
Forum: Amiga scene 17 March 2021, 12:57
Replies: 474
Views: 29,376
Posted By grond
Because the high-resolution and VGA compatibility...

Because the high-resolution and VGA compatibility that ECS and the flickerfixer offered targeted the high-margin productivity market and only that needed a faster CPU. Without these better...
Forum: Amiga scene 16 March 2021, 17:56
Replies: 474
Views: 29,376
Posted By grond
If Commodore had thought like that, we would...

If Commodore had thought like that, we would never have seen the A3000 (for which ECS was implemented aiming at high-end professional users) nor A4000 and wouldn't have progressed beyond a 7MHz 68000...
Forum: Amiga scene 16 March 2021, 14:02
Replies: 474
Views: 29,376
Posted By grond
Hehehe. AGA was the stuff we cared about but not...

Hehehe. AGA was the stuff we cared about but not relevant at all for the boring work stuff. Even today there is no reason to use more than a few colours for productivity stuff. Resolution on the...
Forum: support.Hardware 16 March 2021, 14:00
Replies: 4
Views: 311
Posted By grond
I think -12V is only used for the audio circuit.

I think -12V is only used for the audio circuit.
Forum: Amiga scene 16 March 2021, 09:57
Replies: 474
Views: 29,376
Posted By grond
ECS was the far more complex upgrade than...

ECS was the far more complex upgrade than ECS=>AGA because it made pixel clocks programmable. AGA only added bitplane DMA for two additional bitplanes and some sprite stuff. ECS in itself allowed...
Forum: Amiga scene 16 March 2021, 09:42
Replies: 474
Views: 29,376
Posted By grond
Perhaps this is nonsense but this just came up in...

Perhaps this is nonsense but this just came up in some undercoffeinated part of my brain: a lot of people have always seemed to me to be more concerned about whether they can set an investment off...
Forum: Retrogaming General Discussion 15 March 2021, 16:06
Replies: 33
Views: 2,198
Posted By grond
I think in the tunnel scenes the FPS could be...

I think in the tunnel scenes the FPS could be improved quite a bit if only areas with coordinates made up of the previous screen and the current screen were redrawn/updated. This would correspond to...
Forum: Amiga scene 12 March 2021, 16:10
Replies: 14
Views: 1,128
Posted By grond
@alexh: The article mentioned by mc68060...

@alexh:

The article mentioned by mc68060 referred to something that supposedly happened back in the day when there certainly was a market for copies.
Forum: Coders. Asm / Hardware 11 March 2021, 09:04
Replies: 1,119
Views: 68,730
Posted By grond
Well, one of the two is bad. A lot of...

Well, one of the two is bad. A lot of manufacturers could benefit from a fast ARM implementation that is as fast as x86 processors but Apple will keep it for themselves and not sell it as a part for...
Forum: Amiga scene 10 March 2021, 18:10
Replies: 474
Views: 29,376
Posted By grond
I bought the A600 in early summer of 93. It...

I bought the A600 in early summer of 93. It didn't last long so probably end of 93, early 94. Yes, very late in the life of the Amiga. I was a poor kid and my parents had no interest at all in...
Forum: Amiga scene 10 March 2021, 17:45
Replies: 474
Views: 29,376
Posted By grond
I can only tell about myself but anyway... When I...

I can only tell about myself but anyway... When I was looking to upgrade from my A600 to something AGA, the Amiga was on the way out (as we all know). I remember talking to a shop owner that used to...
Forum: Coders. Asm / Hardware 10 March 2021, 17:34
Replies: 1,119
Views: 68,730
Posted By grond
The bad thing about the Apple chip is that only...

The bad thing about the Apple chip is that only Apple has it and most probably Apple will keep it to themselves. Other ARM processors aren't likely to kill off x86 any time soon. And Apple isn't...
Forum: Coders. Asm / Hardware 09 March 2021, 19:27
Replies: 1,119
Views: 68,730
Posted By grond
Congratulations, you just won an argument about a...

Congratulations, you just won an argument about a rational thing by moving it into the sphere of the irrational.
Forum: Coders. Asm / Hardware 09 March 2021, 18:50
Replies: 1,119
Views: 68,730
Posted By grond
You don't seem to understand it. A modern CISC...

You don't seem to understand it. A modern CISC CPU can execute say 4 CISC instructions per clock cycle. A modern RISC CPU can execute 4 bundles of RISC instructions per clock cycle which may...
Showing results 1 to 40 of 1008

 
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