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Search: Posts Made By: Megol
Forum: Coders. Asm / Hardware 06 September 2018, 10:56
Replies: 500
Views: 14,152
Posted By Megol
Yes I wonder what you will bring next. Pot kettle...

Yes I wonder what you will bring next. Pot kettle etc.
Forum: Coders. Asm / Hardware 05 September 2018, 21:30
Replies: 500
Views: 14,152
Posted By Megol
As it is indeed portable C I do claim that. ...

As it is indeed portable C I do claim that.


At least try to have a basic level of knowledge before trying to discuss something. I already told you BTW.
Forum: Coders. Asm / Hardware 04 September 2018, 20:40
Replies: 500
Views: 14,152
Posted By Megol
And yet people have done it. Several times in...

And yet people have done it. Several times in fact. The stack problem can be worked around by copying(!) the stack when switching tasks, a hack for sure.

Again there are limitations but it's 100%...
Forum: Coders. Asm / Hardware 04 September 2018, 19:31
Replies: 500
Views: 14,152
Posted By Megol
One can write a multitasking OS in 100% standard...

One can write a multitasking OS in 100% standard C. It would have limitations but it's possible. Hint: setjmp.h
Forum: Coders. Asm / Hardware 03 September 2018, 10:50
Replies: 500
Views: 14,152
Posted By Megol
But it isn't true. I posted just some examples,...

But it isn't true. I posted just some examples, there are more.
I also posted some examples of other systems that had proper multitasking very late (68k based Macintosh) or never (ARM based RiscOS)....
Forum: Coders. Asm / Hardware 02 September 2018, 18:14
Replies: 500
Views: 14,152
Posted By Megol
Intel iRMX was released in 1980. Then we have...

Intel iRMX was released in 1980. Then we have other released soon after the IBM PC release: Xenix and QNX.

Was actually thinking of Xenix but that released later though on a non-IBM system.


...
Forum: Coders. Asm / Hardware 02 September 2018, 13:15
Replies: 500
Views: 14,152
Posted By Megol
I actually don't believe you. If that is your...

I actually don't believe you. If that is your honest opinion you would be delusional and while we disagree on many things I don't think you are delusional.

Multitasking 8086 systems were in use...
Forum: Coders. Asm / Hardware 01 September 2018, 22:51
Replies: 500
Views: 14,152
Posted By Megol
It's mostly a relic of the past. All the cool...

It's mostly a relic of the past. All the cool kids* even program small microcontrollers in C using "frameworks" :(
Still better than those BASIC stamp thingies.

(* well, old cool kids I guess)
Forum: Coders. Asm / Hardware 01 September 2018, 22:45
Replies: 500
Views: 14,152
Posted By Megol
Now you got to be trolling?

Now you got to be trolling?
Forum: Coders. Asm / Hardware 01 September 2018, 22:34
Replies: 500
Views: 14,152
Posted By Megol
You see people argue about everything: politics,...

You see people argue about everything: politics, weather, the correct way to wear pants, and which end of a boiled egg should be opened (the small end of course). So why not argue about 30 yo...
Forum: Coders. Asm / Hardware 01 September 2018, 20:40
Replies: 500
Views: 14,152
Posted By Megol
An IBM XT with not only a 8086 but one at...

An IBM XT with not only a 8086 but one at 9.54MHz? I think that isn't correct, really sure about that in fact.

The XT had a 4.77MHz 8088 and the next step in the lower segment of x86 was a PS/2...
Forum: Coders. Asm / Hardware 29 August 2018, 19:41
Replies: 500
Views: 14,152
Posted By Megol
Stop being confrontational please thank you very...

Stop being confrontational please thank you very much. It's irritating.
Forum: Amiga scene 28 August 2018, 19:05
Replies: 320
Views: 43,733
Posted By Megol
Looks great!

Looks great!
Forum: Amiga scene 27 August 2018, 10:42
Replies: 64
Views: 4,193
Posted By Megol
No love for the rutabagas :(

No love for the rutabagas :(
Forum: Coders. Asm / Hardware 26 August 2018, 18:47
Replies: 500
Views: 14,152
Posted By Megol
What exactly do you think is wrong? Page access...

What exactly do you think is wrong? Page access isn't the same as _fast_ page access which came with FPM memory. Never claimed otherwise.

I just tried to find timing for a normal R/W cycle and a...
Forum: Coders. Asm / Hardware 26 August 2018, 12:24
Replies: 500
Views: 14,152
Posted By Megol
Spent some time reading old magazines and other...

Spent some time reading old magazines and other sources of information of the great dark ages of computing (;p).

The short of it: there were no 70ns DRAM in 1979 when the 68000 was released, there...
Forum: Amiga scene 24 August 2018, 11:33
Replies: 332
Views: 45,054
Posted By Megol
One can't really call FPGAs hardware - they are...

One can't really call FPGAs hardware - they are more of hardware emulators. They consist of lookup tables coupled with programmable routing.

And while even I have some aversion towards emulation...
Forum: Amiga scene 23 August 2018, 22:18
Replies: 332
Views: 45,054
Posted By Megol
How could he answer that given that AMMX2 isn't...

How could he answer that given that AMMX2 isn't documented nor described?
Forum: Coders. Asm / Hardware 23 August 2018, 10:46
Replies: 500
Views: 14,152
Posted By Megol
And my late edition Amiga 600 have 100ns DRAM in...

And my late edition Amiga 600 have 100ns DRAM in it, just checked. How does that prove anything?

The fact is that real computers at the time didn't use this 70ns DRAM, that memory timings of real...
Forum: Coders. Asm / Hardware 22 August 2018, 22:38
Replies: 500
Views: 14,152
Posted By Megol
70ns came much much later - in Pentium systems,...

70ns came much much later - in Pentium systems, EDO. Premium for 60ns and latest generation EDO had some 50ns chips.

And then remember that EDO DRAM produced at (in that time) top of the line...
Forum: Coders. Asm / Hardware 20 August 2018, 12:52
Replies: 500
Views: 14,152
Posted By Megol
Don't forget that the IBM PC came to market 4...

Don't forget that the IBM PC came to market 4 years before the Amiga 1000 - an expensive system - and 6 years before the more affordable Amiga 500.



Yes? That's obvious, the 68000 is more...
Forum: Coders. Asm / Hardware 19 August 2018, 23:25
Replies: 500
Views: 14,152
Posted By Megol
Fixed in 1982 but yes. Counting...

Fixed in 1982 but yes.



Counting registers how exactly? 8+4 I'd say.

None. For instance instructions like MOVS*, SCAS*, STOS* use fixed registers. The 8086 is a modified accumulator...
Forum: Amiga scene 10 August 2018, 18:32
Replies: 146
Views: 11,095
Posted By Megol
So using the connector itself requires being an...

So using the connector itself requires being an "adopter"? Even if one use it for analog signals as a few people do? Okay, fine.
Forum: Amiga scene 10 August 2018, 15:53
Replies: 146
Views: 11,095
Posted By Megol
Then the question becomes: does Vampire actually...

Then the question becomes: does Vampire actually use the standard and so needing a license? If they send audio signals yes, if they use "protection" features yes. Video signals? In some cases, most...
Forum: Amiga scene 10 August 2018, 12:40
Replies: 146
Views: 11,095
Posted By Megol
So you are claiming that buying a connector and...

So you are claiming that buying a connector and soldering it into a PCB requires a license? The manufacturer pays a license fee to the creator of the connector standard but why would the one paying...
Forum: Amiga scene 09 August 2018, 23:21
Replies: 146
Views: 11,095
Posted By Megol
You mean the digital video output. No HDMI on...

You mean the digital video output. No HDMI on your card. ;)
Forum: Retrogaming General Discussion 06 August 2018, 18:59
Replies: 9
Views: 398
Posted By Megol
Sort of - there were the Kansas city standard...

Sort of - there were the Kansas city standard (yes, had to look up the name). However many common computers used their own format and even if not the actual format of the data varies between...
Forum: Retrogaming General Discussion 13 July 2018, 10:49
Replies: 26
Views: 1,387
Posted By Megol
Haven't looked into that (it's on my list) but...

Haven't looked into that (it's on my list) but have assumed one could use the same solution as on the C64: take the leaked signal (AEC?) and inject an inverted version.

My C128 have extremely...
Forum: Amiga scene 13 July 2018, 10:19
Replies: 10
Views: 717
Posted By Megol
Why?

Why?
Forum: Coders. General 15 June 2018, 15:19
Replies: 18
Views: 1,187
Posted By Megol
I can assure you nobody laughed at the Andropolis...

I can assure you nobody laughed at the Andropolis 3D part.
Forum: Amiga scene 10 June 2018, 17:47
Replies: 625
Views: 29,503
Posted By Megol
Something worth spending my time for. Like maybe...

Something worth spending my time for. Like maybe getting somebody to realize things aren't based on personal ideas but facts.
If one instead get repeatedly insulted in a way that shows the others in...
Forum: Amiga scene 10 June 2018, 17:25
Replies: 625
Views: 29,503
Posted By Megol
Anything up to ARM version 5 should be possible...

Anything up to ARM version 5 should be possible to do, first released in 1998 so ca 20 years ago.
Forum: Retrogaming General Discussion 02 June 2018, 14:45
Replies: 8
Views: 1,068
Posted By Megol
This is really nice! Didn't even know of that...

This is really nice! Didn't even know of that board, opens up some possibilities for cheap and quick interfaces.

Any idea if it would possible to add Amiga mouse support? The board/firmware would...
Forum: Amiga scene 31 May 2018, 16:07
Replies: 625
Views: 29,503
Posted By Megol
Because it doesn't make any difference. ...

Because it doesn't make any difference.



BIC = bit clear
NE = execute on Not Equal = Z condition code clear
No S = doesn't set flags

R0, R1, R2 ASR R3 ; R0 = R1 op (R2 ASR R3)
Forum: Amiga scene 25 May 2018, 18:44
Replies: 625
Views: 29,503
Posted By Megol
..

..
Forum: Amiga scene 25 May 2018, 17:56
Replies: 625
Views: 29,503
Posted By Megol
..

..
Forum: Amiga scene 23 May 2018, 20:24
Replies: 625
Views: 29,503
Posted By Megol
Smaller: yes. A few percent at most. Not easier...

Smaller: yes. A few percent at most.
Not easier to support in software.
Faster: in a pure speed-demon design, yes. A few percent lower latency in adder path and about one clock lower latency for...
Forum: Amiga scene 22 May 2018, 18:46
Replies: 625
Views: 29,503
Posted By Megol
Do not understand what that would be. ...

Do not understand what that would be.



Yes while doing the work of two instructions together being 24 bytes. Guess what's smaller, easier to support in hardware, faster?

64 bit values are...
Forum: Amiga scene 22 May 2018, 15:05
Replies: 625
Views: 29,503
Posted By Megol
Modern processors are implementations of their...

Modern processors are implementations of their ISA and the idea behind the ISA is what IBM called architecture when releasing the IBM 360: a contract describing how the processor behaves rather than...
Forum: Amiga scene 18 May 2018, 12:20
Replies: 625
Views: 29,503
Posted By Megol
For processing intensive workloads that is close...

For processing intensive workloads that is close to unmeasurable.

And that is by interpreting this nonsense to something that could be remotely relevant in context.
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