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Forum: Coders. Asm / Hardware Today, 10:51
Replies: 999
Views: 35,209
Posted By meynaf
Sorry for you if the truth is "petrified". It's...

Sorry for you if the truth is "petrified". It's not less true.



Very clever litwr, who is able to thank people and insult them nearly in the same sentence. You should have been a politician :p...
Forum: Coders. Asm / Hardware 15 December 2018, 18:46
Replies: 999
Views: 35,209
Posted By meynaf
Shift what by 1 ? :confused There is nothing...

Shift what by 1 ? :confused
There is nothing looking even remotely like a shift option in a move register multiple. If you think otherwise, explain in detail.



What point do you try to prove...
Forum: Coders. Asm / Hardware 15 December 2018, 17:10
Replies: 999
Views: 35,209
Posted By meynaf
Then what are you waiting ? Just do it.

Then what are you waiting ? Just do it.
Forum: Coders. Asm / Hardware 15 December 2018, 16:58
Replies: 999
Views: 35,209
Posted By meynaf
But it is actually more useful. Post...

But it is actually more useful.



Post and pre decrement/increment does not impact the order in which registers are present in memory.



But they do not belong to the program in our case,...
Forum: Coders. Asm / Hardware 15 December 2018, 16:07
Replies: 999
Views: 35,209
Posted By meynaf
Dhrystone is known to be a very, very poor...

Dhrystone is known to be a very, very poor benchmark for which compilers can remove most of the work and render it useless.



What a catastrophic impact this would have had...



Quite the...
Forum: Coders. Asm / Hardware 15 December 2018, 11:23
Replies: 999
Views: 35,209
Posted By meynaf
Sorry, but no. ARM does not have more powerful...

Sorry, but no. ARM does not have more powerful variant. Actually, quite the opposite. ARM has less addressing modes, and does not support word-sized moves.
And x86's pusha/popa is a joke. MOVEM has...
Forum: Nostalgia & memories 14 December 2018, 12:37
Replies: 144
Views: 5,474
Posted By meynaf
@DamienD : your inbox is full. Can't send you PM...

@DamienD : your inbox is full. Can't send you PM anymore, please clear that up.
Forum: Coders. System 14 December 2018, 10:50
Replies: 4
Views: 162
Posted By meynaf
You can try booting with no startup-sequence, on...

You can try booting with no startup-sequence, on bare v39 or v40. Apparently some system patches fix that, intentionnally or not.
Forum: Coders. System 14 December 2018, 00:23
Replies: 4
Views: 162
Posted By meynaf
InputEvent struct destroyed

Got a problem when passing an InputEvent to input.device via DoIo (to reposition the mouse pointer) : the call works fine, but - on some configs - the InputEvent struct gets destroyed after usage....
Forum: Nostalgia & memories 13 December 2018, 23:19
Replies: 144
Views: 5,474
Posted By meynaf
There is no need to go this far...

There is no need to go this far...
Forum: Nostalgia & memories 13 December 2018, 22:44
Replies: 144
Views: 5,474
Posted By meynaf
It always amazes me such people really exist. :p ...

It always amazes me such people really exist. :p



Nothing indeed... if these options work and don't add some load on me.



Well, do it if you want. You know what i think of this and there...
Forum: support.Hardware 13 December 2018, 22:33
Replies: 4
Views: 217
Posted By meynaf
I don't know if all 020 models are this way, but...

I don't know if all 020 models are this way, but the EC020 of the A1200 doesn't seem to even get slightly warm...
Forum: Nostalgia & memories 13 December 2018, 22:09
Replies: 144
Views: 5,474
Posted By meynaf
I guess that makes us even. You don't care for a...

I guess that makes us even. You don't care for a French version, I don't care for a floppy version...
Forum: Nostalgia & memories 13 December 2018, 21:44
Replies: 144
Views: 5,474
Posted By meynaf
But you removed the multilanguage support while...

But you removed the multilanguage support while it would have been easy to add a small menu for this...
Forum: Nostalgia & memories 13 December 2018, 21:28
Replies: 144
Views: 5,474
Posted By meynaf
The lzx you used on your disk isn't identical to...

The lzx you used on your disk isn't identical to my lzx archive.
Forum: Nostalgia & memories 13 December 2018, 21:15
Replies: 144
Views: 5,474
Posted By meynaf
- Warning - Floppy versions are not...

- Warning -

Floppy versions are not supported.
If you want the game to run properly, use the HD version I have uploaded.
Forum: Nostalgia & memories 13 December 2018, 13:36
Replies: 144
Views: 5,474
Posted By meynaf
Ok folks. Are you ready ? Here is first release...

Ok folks. Are you ready ?
Here is first release of Sinbad and the Throne of the Falcon (meynaf.free.fr/pr/sinbad.lzx) ported from ST version.
Forum: Coders. Blitz Basic 13 December 2018, 12:36
Replies: 14
Views: 503
Posted By meynaf
The trick is not in how OCS chipset works, but in...

The trick is not in how OCS chipset works, but in how AGA chipset works.
When a palette entry is written to the high nibble, it is copied to the low nibble as well, thus multiplying the value by 17....
Forum: Coders. Asm / Hardware 12 December 2018, 18:30
Replies: 999
Views: 35,209
Posted By meynaf
It's probably wrong method due to rounding...

It's probably wrong method due to rounding errors, but i've simply used decimal fixed-point instead of large arrays to compute the numbers.
Forum: Coders. Asm / Hardware 12 December 2018, 18:00
Replies: 999
Views: 35,209
Posted By meynaf
I checked again, I get $12ae = 4782. Did you...

I checked again, I get $12ae = 4782. Did you paste it without any change ?
Forum: Coders. Asm / Hardware 12 December 2018, 17:13
Replies: 999
Views: 35,209
Posted By meynaf
You may also try the following : moveq...

You may also try the following :

moveq #1,d6
moveq #1,d7
move.w #1000-9-1,d5
moveq #10,d4
moveq #2,d0
.loop
add.l d7,d6
exg d6,d7
Forum: Coders. Asm / Hardware 12 December 2018, 16:47
Replies: 999
Views: 35,209
Posted By meynaf
Ok then, let's go. move.l #4782,d0 rts ...

Ok then, let's go.

move.l #4782,d0
rts

:p :lol
(What ? It gives the right result, no ?)
Forum: Coders. Asm / Hardware 12 December 2018, 15:14
Replies: 999
Views: 35,209
Posted By meynaf
44 bytes for what ? Does it include displaying...

44 bytes for what ?
Does it include displaying the number ?



Maybe, maybe not. I have bigger things on the fire currently.
Forum: Coders. Asm / Hardware 10 December 2018, 16:33
Replies: 999
Views: 35,209
Posted By meynaf
This makes me wonder if this thread shouldn't...

This makes me wonder if this thread shouldn't just be closed. It leads nowhere.
Forum: Coders. Asm / Hardware 10 December 2018, 12:57
Replies: 999
Views: 35,209
Posted By meynaf
Even if not IBM mainframes, some big machines...

Even if not IBM mainframes, some big machines were 68k based. At the very least, the 68k was designed to be run in any kind of machine, including mainframes. So the virtualization bugfix makes sense,...
Forum: Coders. Asm / Hardware 10 December 2018, 11:21
Replies: 999
Views: 35,209
Posted By meynaf
Now that you speak of it, indeed this is to be...

Now that you speak of it, indeed this is to be expected - as this already happened...



True.



:lol
Forum: Coders. Asm / Hardware 10 December 2018, 10:49
Replies: 999
Views: 35,209
Posted By meynaf
Such a routine is rarely, if ever, time critical.

Such a routine is rarely, if ever, time critical.
Forum: Coders. Asm / Hardware 10 December 2018, 10:26
Replies: 999
Views: 35,209
Posted By meynaf
Weren't some of those mainframes 68k based ? ...

Weren't some of those mainframes 68k based ?



Nope - again this was a small problem to fix an architectural one.
It's not artificial - it makes virtualization a lot easier even for a single...
Forum: Coders. Tutorials 09 December 2018, 12:13
Replies: 111
Views: 3,887
Posted By meynaf
Why not the obvious : moveq #3,d0 and.w...

Why not the obvious :

moveq #3,d0
and.w data,d0
bne label
Forum: Coders. Asm / Hardware 08 December 2018, 16:33
Replies: 999
Views: 35,209
Posted By meynaf
Of course it's not the end user who has most of...

Of course it's not the end user who has most of the problems. It's the people who write virtualization software. Did you write such software ? It not, you're not qualified to judge.

But if you...
Forum: Coders. Asm / Hardware 08 December 2018, 15:28
Replies: 999
Views: 35,209
Posted By meynaf
Some funny fact about this, is that even though...

Some funny fact about this, is that even though current x86 still support old x87 instructions such as fsin, such an instruction is slow and inaccurate, and some c compilers (such as msvc) use a...
Forum: Coders. Asm / Hardware 08 December 2018, 14:59
Replies: 999
Views: 35,209
Posted By meynaf
So now you have invented ratios and attempt to...

So now you have invented ratios and attempt to prove something based on them ? Where do they come from anyway.

I could write other values and it would then be totally different :
68040:80486 -...
Forum: Coders. Tutorials 08 December 2018, 13:19
Replies: 111
Views: 3,887
Posted By meynaf
Tell that to people who got happy with my game...

Tell that to people who got happy with my game ports :cheese
Forum: Coders. Asm / Hardware 08 December 2018, 13:15
Replies: 999
Views: 35,209
Posted By meynaf
Perhaps you will have to get your maths right...

Perhaps you will have to get your maths right again. Where did you getch that 80386 is a bit faster than 68030 ? It's not. And nothing in the numbers you wrote above can tell otherwise.



No the...
Forum: Coders. Tutorials 08 December 2018, 12:39
Replies: 111
Views: 3,887
Posted By meynaf
Well, it's a real pain to disassemble (and to...

Well, it's a real pain to disassemble (and to debug).
This program (http://eab.abime.net/showthread.php?t=95240) was just full of this and if i could kick the author's ass i'd have done it. :mad
Forum: Coders. Asm / Hardware 08 December 2018, 12:11
Replies: 999
Views: 35,209
Posted By meynaf
Nope - it's not theory. It's real life. You just...

Nope - it's not theory. It's real life. You just didn't understand it.
https://en.wikipedia.org/wiki/Popek_and_Goldberg_virtualization_requirements



I have provided one. The fact you didn't...
Forum: Coders. Asm / Hardware 08 December 2018, 11:43
Replies: 999
Views: 35,209
Posted By meynaf
Right. And without any instruction to loop. ...

Right. And without any instruction to loop.



5 ? :confused
Learn how to count. This is 4 instructions, not 5 :lol
So you added one ghostly instruction to use 10 > 9. Was it intentional ?
Forum: Nostalgia & memories 07 December 2018, 13:10
Replies: 144
Views: 5,474
Posted By meynaf
I noticed that too first time i ran the game. But...

I noticed that too first time i ran the game. But on the "captain's cabin" screen there is a box around the life bar. I've added one here as well, it may still look a bit weird but this is all that...
Forum: Coders. Tutorials 07 December 2018, 11:18
Replies: 111
Views: 3,887
Posted By meynaf
On 68020+ there is a barrel shifter so ROL/ROR...

On 68020+ there is a barrel shifter so ROL/ROR timing is no longer a problem. Having added an extra instruction for byte swapping in words would have led to duplicates.
Forum: Nostalgia & memories 06 December 2018, 23:59
Replies: 144
Views: 5,474
Posted By meynaf
That would be overkill. Using a size of 8 allows...

That would be overkill. Using a size of 8 allows taking some shortcuts that makes the code a lot simpler. And there would be 6 text routines to rewrite...

As most texts will fit, perhaps reducing...
Showing results 1 to 40 of 3310

 
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