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Forum: Amiga scene 30 June 2020, 13:30
Replies: 125
Views: 20,217
Posted By meynaf
PM me with the details then. It's probably...

PM me with the details then. It's probably nothing to fix.
Forum: Coders. Asm / Hardware 30 June 2020, 10:35
Replies: 35
Views: 2,057
Posted By meynaf
Even with icache off, even if they don't execute...

Even with icache off, even if they don't execute simultaneously, if instruction 1 overwrites instruction 2 then instruction 2 will still execute unmodified, because the write occurs several clocks...
Forum: Coders. Asm / Hardware 29 June 2020, 20:09
Replies: 35
Views: 2,057
Posted By meynaf
Checking the address of the instruction itself...

Checking the address of the instruction itself means support for SMC and, again, the 68k's philosophy is against it (it's also the reason why PC-relative modes aren't for writing).
A sure thing is...
Forum: Coders. Asm / Hardware 27 June 2020, 15:49
Replies: 35
Views: 2,057
Posted By meynaf
Yes indeed :laughing 060 did a few "not really...

Yes indeed :laughing
060 did a few "not really smart" moves. Hopefully (AFAIK) this one doesn't have a significant impact.
Forum: Coders. Asm / Hardware 27 June 2020, 15:15
Replies: 35
Views: 2,057
Posted By meynaf
Ok, here it goes : - perform computation with...

Ok, here it goes :
- perform computation with scale factor (*2, *4 or *8), if *1 is used instead then <020
- push a7 with movem.l a7,-(a7), then pop to another register and compare with a7 - if...
Forum: Coders. Asm / Hardware 27 June 2020, 13:57
Replies: 35
Views: 2,057
Posted By meynaf
Missed : in french, would be SE. :p If...

Missed : in french, would be SE. :p



If you want, i also have a few tricks to detect 020+, even some that don't need trapping.
Forum: Coders. Asm / Hardware 27 June 2020, 13:50
Replies: 35
Views: 2,057
Posted By meynaf
You don't need to stretch your brain :...

You don't need to stretch your brain : superscalar or not, the instruction executed will be the one before the alteration.
The 68060 does not in any manner monitor code alterations, nor does any...
Forum: Coders. Asm / Hardware 27 June 2020, 12:47
Replies: 35
Views: 2,057
Posted By meynaf
You mean without OS ? Not sure it's what you...

You mean without OS ?

Not sure it's what you want, but here are a few tricks :
- set some 040+ bit in cacr - if it reads back as 0, then 020-030
- try to access caar register - if not illegal,...
Forum: Coders. Asm / Hardware 25 June 2020, 17:23
Replies: 34
Views: 2,045
Posted By meynaf
If you're patching code and it doesn't fit...

If you're patching code and it doesn't fit otherwise, then it's acceptable.
If you're coding in a ROM and space is extremely limited, then it's acceptable.
Otherwise, forbidden. Coder license...
Forum: Coders. Asm / Hardware 25 June 2020, 16:42
Replies: 34
Views: 2,045
Posted By meynaf
It's not really not understandable as the intent...

It's not really not understandable as the intent is clear, but indeed, very dirty :D
Reminds me of the cmpi.w trick used by sas/c.
Forum: Coders. Asm / Hardware 23 June 2020, 18:29
Replies: 34
Views: 2,045
Posted By meynaf
This wasn't listed in the conditions ;) But if...

This wasn't listed in the conditions ;)
But if you need PC relative code, then you're gonna have problems any time you write something.



6 if we count the reloc32 entry. I'm not after code...
Forum: Coders. Asm / Hardware 23 June 2020, 17:19
Replies: 34
Views: 2,045
Posted By meynaf
In an interrupt i would use simple tst.b addr. ...

In an interrupt i would use simple tst.b addr.
In the main code i would use a base reg, such as tst.b d(a5).
This has the advantage to work with the st / sf instructions themselves as well....
Forum: support.Games 22 June 2020, 11:20
Replies: 29
Views: 717
Posted By meynaf
What he has (or appears to have) is just some...

What he has (or appears to have) is just some kind of embedded emulator configured to run a specific game directly.
Forum: Nostalgia & memories 22 June 2020, 11:17
Replies: 9
Views: 599
Posted By meynaf
You don't need good ears. More often than not, PC...

You don't need good ears. More often than not, PC players fail miserably. :p

I can provide the reference with Delitracker2 and the file saving ability of some noteplayer. I can even provide mods...
Forum: support.Games 22 June 2020, 11:05
Replies: 29
Views: 717
Posted By meynaf
Read the thread : it looks like he doesn't even...

Read the thread : it looks like he doesn't even have a WB setup...
Forum: Coders. General 22 June 2020, 07:58
Replies: 19
Views: 1,131
Posted By meynaf
There is an advantage of using interleaved...

There is an advantage of using interleaved bitmaps in case you use the CPU to access the screen : you can do everything from a single pointer, which means less pressure on the registers.
Forum: support.Games 22 June 2020, 07:38
Replies: 29
Views: 717
Posted By meynaf
You don't run it from the mac, you run it from...

You don't run it from the mac, you run it from the emulated Amiga.
And you need a full Amiga setup for this : kickstart, workbench, etc.
Forum: support.Games 20 June 2020, 18:47
Replies: 29
Views: 717
Posted By meynaf
It is EOBII-AGA you have to run. It is main...

It is EOBII-AGA you have to run. It is main program. This is how to run "normal version", as mentioned before.
This can only be done from within the emulated machine, running normal Amiga OS.
Forum: support.Games 20 June 2020, 17:54
Replies: 29
Views: 717
Posted By meynaf
Looks like it's the whdload slave... Do you...

Looks like it's the whdload slave...

Do you have a file named "EOBII" (or something similar) in your eob2 folder ?
If yes, could you try to run it directly ?
Forum: support.Games 20 June 2020, 16:57
Replies: 29
Views: 717
Posted By meynaf
IIRC EOB1 does not save the game when you finish...

IIRC EOB1 does not save the game when you finish it.
However you don't need to reach the end to import the party into EOB2. So if you have a save game, this should work.
Forum: support.Games 20 June 2020, 15:01
Replies: 29
Views: 717
Posted By meynaf
Wanna have a simple step-by-step guide ? ...

Wanna have a simple step-by-step guide ?

Start new game in eob2.
Save the game.
Quit (with whdload version it's important).
Locate eobdata0.sav or similar named file.
In that same directory,...
Forum: Coders. Language 17 June 2020, 16:01
Replies: 15
Views: 1,082
Posted By meynaf
The more you write in ASM, the better you become...

The more you write in ASM, the better you become at doing it. But you also become better with other languages as well because with ASM experience you really know what you're doing.
Forum: Coders. Asm / Hardware 14 June 2020, 13:52
Replies: 6
Views: 511
Posted By meynaf
Using 8 bitplanes with fmode=0 is gonna eat all...

Using 8 bitplanes with fmode=0 is gonna eat all chipmem bandwidth. Probably not the right thing to do.
Forum: Coders. Asm / Hardware 14 June 2020, 11:10
Replies: 6
Views: 511
Posted By meynaf
Looks like race condition between copper and...

Looks like race condition between copper and display.
It is possible that BPL1MOD and BPL2MOD are somehow added after some high words of bitplane addresses have been set.

Anyway, it's clear the...
Forum: Coders. Asm / Hardware 12 June 2020, 19:45
Replies: 11
Views: 624
Posted By meynaf
I would say it is because the MMU is there in all...

I would say it is because the MMU is there in all cases, even if disabled/not working.

The situation seems to be similar to that of 68EC030 so the method to detect it should be the same ?
It's...
Forum: project.EAB 12 June 2020, 19:31
Replies: 122
Views: 16,833
Posted By meynaf
There are a few things you can still do without...

There are a few things you can still do without being a GM :nervous
Forum: Nostalgia & memories 10 June 2020, 09:11
Replies: 29
Views: 1,691
Posted By meynaf
This is code optimisation instead of algorithmic...

This is code optimisation instead of algorithmic optimisation.
Rewriting the huffman decoder in asm made it a lot less sensitive to bitrate.
Some significant time could also be obtained by avoiding...
Forum: Nostalgia & memories 09 June 2020, 20:15
Replies: 29
Views: 1,691
Posted By meynaf
After optimization of mpega.library i could play...

After optimization of mpega.library i could play even 320kbps with quality set to high on my B1230. Ok, mono 22khz and not too much multitasking. But no stutter with DT2's mpega player and it starts...
Forum: support.Apps 09 June 2020, 17:09
Replies: 48
Views: 2,136
Posted By meynaf
The problem isn't using the function, it is that...

The problem isn't using the function, it is that it doesn't always return the best mode...
Forum: support.Apps 09 June 2020, 12:08
Replies: 48
Views: 2,136
Posted By meynaf
I don't think it would be nice to have code...

I don't think it would be nice to have code targeted at a specific monitor driver. But it would be cool to have general purpose code choosing the best available option depending on image parameters,...
Forum: Nostalgia & memories 08 June 2020, 09:38
Replies: 29
Views: 1,691
Posted By meynaf
It's a different situation. With MP3 due to the...

It's a different situation. With MP3 due to the lossy nature you can reduce quality to gain speed. With FLAC you can't, it's lossless and not designed for this.
So even though the decoding isn't as...
Forum: Nostalgia & memories 08 June 2020, 08:59
Replies: 29
Views: 1,691
Posted By meynaf
The settings in the video show 22050 frequency...

The settings in the video show 22050 frequency limit and mono output.
Forum: Coders. Asm / Hardware 08 June 2020, 08:46
Replies: 6
Views: 553
Posted By meynaf
I don't use xref. Instead, i abuse of the include...

I don't use xref. Instead, i abuse of the include directive. :D
Forum: Coders. Asm / Hardware 08 June 2020, 08:38
Replies: 47
Views: 2,069
Posted By meynaf
This sounds like "agree to disagree". In that...

This sounds like "agree to disagree". In that case, fine with me.



Now the problem is where to draw the line. Some folks pretend compiler output is "good enough".
Forum: Coders. Asm / Hardware 06 June 2020, 19:51
Replies: 47
Views: 2,069
Posted By meynaf
As i said, it is a small waste. There...

As i said, it is a small waste.



There is something else you might consider. Writing optimal code (for code size) isn't really more time consuming when you do it a lot. And with this habit...
Forum: project.WHDLoad 06 June 2020, 13:33
Replies: 125
Views: 15,644
Posted By meynaf
Are fixes available somewhere for these ? ...

Are fixes available somewhere for these ?



This could be called "the eagle call bug". It happens if you take the eagle, go somewhere, land, take it back, etc. It ends up with the game aborting...
Forum: Coders. Asm / Hardware 06 June 2020, 09:41
Replies: 47
Views: 2,069
Posted By meynaf
Really, it depends how often this code is called....

Really, it depends how often this code is called. Time optimising code that's called only once or rarely, is nonsense.
And i value the size of data as much as the size of code :p
Forum: Coders. Asm / Hardware 05 June 2020, 22:55
Replies: 47
Views: 2,069
Posted By meynaf
I'm not saying 100 bytes are a problem by...

I'm not saying 100 bytes are a problem by themselves. But removing a div max 4 times per frame is really not worth and a small waste is still a waste.



Yes, in that case, it's better to keep...
Forum: project.WHDLoad 05 June 2020, 22:36
Replies: 125
Views: 15,644
Posted By meynaf
All these fixes are among the ones i did. I...

All these fixes are among the ones i did.
I fixed everything that was in text files, only fixes i don't have are in other data files and the code itself.
Forum: Coders. Asm / Hardware 05 June 2020, 21:46
Replies: 47
Views: 2,069
Posted By meynaf
I was the first to mention it would be needed,...

I was the first to mention it would be needed, wasn't I ?



At least now it's clear.



It can be, if the code is really time critical. Otherwise it's a pure waste.
Now how frequently is...
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