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Forum: support.WinUAE Today, 00:35
Replies: 31
Views: 2,780
Posted By ross
Hi Toni, latest winuae.7z: 0007F052 2d7b 001c ...

Hi Toni, latest winuae.7z:
0007F052 2d7b 001c MOVE.L (PC,D0.W,$1c) == $0007f070 [001c00e4],(A6, $001c) == $00000692 [46570000]
0007F056 00e4 ILLEGAL

Latest...
Forum: request.Old Rare Games Yesterday, 20:30
Replies: 20
Views: 2,551
Posted By ross
Technically it would be possible, but it would...

Technically it would be possible, but it would require at least 1MB of generic RAM, in addiction to 512KB chip, to relocate all memory (like WHDLoad does).
Now the game use ALL 512KB chip RAM (yes,...
Forum: Coders. Asm / Hardware Yesterday, 18:09
Replies: 852
Views: 29,104
Posted By ross
You can gain 4 more bytes not using a4 at all but...

You can gain 4 more bytes not using a4 at all but sp instead.

But surely someone would say that you are cheating because you have to use a non-minimum AmigaOS stack ;)
Forum: Coders. Asm / Hardware 19 November 2018, 11:05
Replies: 6
Views: 242
Posted By ross
Excellent collection. Thanks! And thanks...

Excellent collection.
Thanks!

And thanks to Toni for the hints.
Forum: Coders. Tutorials 19 November 2018, 00:07
Replies: 14
Views: 506
Posted By ross
And this is perfectly accettable, in reality you...

And this is perfectly accettable, in reality you can also want to write your OS from scratch.
But if you want to write code in an active AmigaOS environment you need to know a bare minumum on how it...
Forum: Coders. Asm / Hardware 18 November 2018, 23:53
Replies: 6
Views: 242
Posted By ross
Hi dissident, I cannot help you on the topic...

Hi dissident, I cannot help you on the topic because I have no direct experience on MMU of 040/060.
Anyway 'back in the days' with my Blizzard 030 I had written MMU code, that I've successfully...
Forum: Amiga scene 18 November 2018, 21:26
Replies: 13
Views: 551
Posted By ross
Hi Phill, Look for 9Lives_2976.zip on EAB FTP. ...

Hi Phill, Look for 9Lives_2976.zip on EAB FTP.

But what's wrong in 9 Lives (1990)(ARC)[cr Angels - Defjam][f Angels - Defjam][t +4 Angels - Defjam]? (apart the stupid depacker audio filter...
Forum: Coders. Asm / Hardware 18 November 2018, 16:46
Replies: 852
Views: 29,104
Posted By ross
:D :agree This is why, sometimes, I edit my...

:D :agree
This is why, sometimes, I edit my posts furiously in the first few minutes.
It's not your case, but for me the English language is the problem so I need to revise before post.
;)
Forum: Coders. Tutorials 18 November 2018, 15:44
Replies: 14
Views: 506
Posted By ross
Why you assumed that at $20000 and up you have...

Why you assumed that at $20000 and up you have free and usable memory locations?
In Amiga there is only ONE fixed memory location: ($4 aka execbase).
Everything else is dynamic, derive from...
Forum: support.WinUAE 18 November 2018, 15:15
Replies: 31
Views: 2,780
Posted By ross
Thanks!

Thanks!
Forum: support.WinUAE 18 November 2018, 13:41
Replies: 31
Views: 2,780
Posted By ross
Hi Toni, I appreciate the memory content...

Hi Toni, I appreciate the memory content displayed by the internal disassembler.
Can be extend to all memory related instructions?

006CCF74 2c78 0004 MOVEA.L $0004 [002008d4],A6...
Forum: request.Old Rare Games 18 November 2018, 12:35
Replies: 20
Views: 2,551
Posted By ross
Another game restoration project. I've taken...

Another game restoration project.
I've taken the challenge to make this game complete and working in every Amiga.

It proved to be complex for several reasons:
- designed exclusively for KS1.x,...
Forum: Coders. Tutorials 18 November 2018, 11:54
Replies: 2
Views: 185
Posted By ross
It is always a pleasure to read your...

It is always a pleasure to read your articles/tutorials.

:great
Forum: Amiga scene 18 November 2018, 11:52
Replies: 361
Views: 68,700
Posted By ross
I missed this thread till today, so took the...

I missed this thread till today, so took the opportunity to read it all.

Congratulations Galahad and all others involved for the work done!

:great
Forum: Coders. Asm / Hardware 18 November 2018, 09:50
Replies: 852
Views: 29,104
Posted By ross
Only to bootblock code.

Only to bootblock code.
Forum: Coders. Tutorials 17 November 2018, 21:23
Replies: 14
Views: 506
Posted By ross
You need to properly disable sprites.

You need to properly disable sprites.
Forum: Coders. Asm / Hardware 17 November 2018, 14:17
Replies: 852
Views: 29,104
Posted By ross
Sure DRAM require refresh, no idea how...

Sure DRAM require refresh, no idea how implemented in various 'real' fast RAM expansions.
Perhaps in a good implementation (with cells fast enough) delays can be negligible.


Actually PCMCIA...
Forum: Coders. Asm / Hardware 17 November 2018, 13:00
Replies: 852
Views: 29,104
Posted By ross
Well, topic is "68k details" so is not too much...

Well, topic is "68k details" so is not too much off-topic :) (although in effect this is really Amiga strictly related, but this is an Amiga forum :))

Remember that you can disable all DMA but not...
Forum: support.WinUAE 11 November 2018, 18:56
Replies: 6
Views: 409
Posted By ross
HOL report as a 1988 game:...

HOL report as a 1988 game: http://hol.abime.net/182

But inside main executable there is (c) 1987 and the game intro is dated november 1987.
No evidence for the main exe because no original...
Forum: support.WinUAE 11 November 2018, 18:22
Replies: 6
Views: 409
Posted By ross
Yes, it works! Thanks for the detailed...

Yes, it works!

Thanks for the detailed information.
So a CIA variant existed 1987/88 :)



Yep ;)
Forum: support.WinUAE 11 November 2018, 16:49
Replies: 6
Views: 409
Posted By ross
CIA-A DDRA fixed I/O bits direction

Another thread where I was undecided whether to write in support.WinUAE or in the Coders.Asm/Hardware section.

This time this section won :)

I'm debugging an old game, that only work in KS1.x...
Forum: Coders. Asm / Hardware 08 November 2018, 17:06
Replies: 18
Views: 711
Posted By ross
Actually it's not so rare. Many games from the...

Actually it's not so rare.
Many games from the past used the standard file system and then a non-system loader.
Much simpler not worry about where the "files" locate tracks/blocks, or to...
Forum: Coders. Asm / Hardware 08 November 2018, 13:19
Replies: 18
Views: 711
Posted By ross
Try my loader. ...

Try my loader.

http://eab.abime.net/showthread.php?t=88565
Forum: Coders. Asm / Hardware 06 November 2018, 20:22
Replies: 24
Views: 817
Posted By ross
:great another step towards perfection. ...

:great another step towards perfection.

Thanks!
Forum: Coders. Asm / Hardware 06 November 2018, 19:10
Replies: 24
Views: 817
Posted By ross
I'm from C64 school, so CIA is a know beast :) ...

I'm from C64 school, so CIA is a know beast :)

And yes, as an 8-bit legacy is a bit alien in Amiga context.
Forum: Coders. Asm / Hardware 06 November 2018, 18:48
Replies: 24
Views: 817
Posted By ross
This is the definitive answer on the topic :)

This is the definitive answer on the topic :)
Forum: Coders. Asm / Hardware 06 November 2018, 18:37
Replies: 24
Views: 817
Posted By ross
Nothing wrong here. CIA registers are read/write....

Nothing wrong here. CIA registers are read/write.
But some are different from normal memory cells because they actually contain 2 different registers (one read-only and one write-only).
ICR is one...
Forum: Coders. Asm / Hardware 06 November 2018, 18:29
Replies: 24
Views: 817
Posted By ross
EDIT: Ok, waiting the response :) ...

EDIT: Ok, waiting the response :)



Sure. But I needed a way to highlight the problem ;)

Thanks.
Forum: Coders. Asm / Hardware 06 November 2018, 17:28
Replies: 24
Views: 817
Posted By ross
Cannot be this. CIA's registers are read/write...

Cannot be this. CIA's registers are read/write and anyway where clr is used is harmless. :)


The code I wrote is not meant for 68060 and it is not the code I normally use.
It is only some quick...
Forum: support.Games 06 November 2018, 14:35
Replies: 20
Views: 676
Posted By ross
malko you have not yet learned Italian? Hurry up!...

malko you have not yet learned Italian? Hurry up! :p
Canton du Tessin is nearby..
Forum: support.Games 06 November 2018, 14:28
Replies: 20
Views: 676
Posted By ross
A proper fix for this game is not too difficult,...

A proper fix for this game is not too difficult, but why not use the SHD/Mystic version?
Forum: Coders. Asm / Hardware 06 November 2018, 13:25
Replies: 24
Views: 817
Posted By ross
Your question is relevant and you're right, at...

Your question is relevant and you're right, at first I don't touch Timer A counter.
But there is a simple reason: seems that it's not used by the system, at least not at boot and I assumed that the...
Forum: Coders. Asm / Hardware 06 November 2018, 00:13
Replies: 24
Views: 817
Posted By ross
Floppy disk Spurious PORTS irq

While I was writing some code using CIA registers I came across a strange behaviour that I can not understand.
All tests done in WinUAE, latest version, bare Quickstart A500 configuration or A1200...
Forum: Coders. Asm / Hardware 05 November 2018, 16:14
Replies: 852
Views: 29,104
Posted By ross
On this I agree. But the boundary is subjective...

On this I agree. But the boundary is subjective and variable.
There is inevitable hack, there's evitable hack.. The point is not abuse it.
Forum: Coders. Asm / Hardware 05 November 2018, 16:08
Replies: 852
Views: 29,104
Posted By ross
uh, irony button has remained invisible! we need...

uh, irony button has remained invisible! we need to fix forum code :p
Sorry I could not resist :)
Forum: Coders. Asm / Hardware 05 November 2018, 15:57
Replies: 852
Views: 29,104
Posted By ross
You've probably never met valid "hackers". Or...

You've probably never met valid "hackers". Or they were just script kiddies.
(anyway first probably we need a definition for "hackers" or "crackers", but very OT..)

Only two categories: good...
Forum: Coders. Asm / Hardware 05 November 2018, 15:40
Replies: 852
Views: 29,104
Posted By ross
eh, sorry, bad choice :) I simply used the...

eh, sorry, bad choice :)
I simply used the first label that came to my mind.
Forum: support.Demos 05 November 2018, 11:34
Replies: 9
Views: 736
Posted By ross
I think the first 'demo' (multipart) and...

I think the first 'demo' (multipart) and specifically done for copyparties are from 1987.
I remember something of that period with exciting effects and not only because there were boobs visible...
Forum: Coders. Asm / Hardware 04 November 2018, 23:39
Replies: 852
Views: 29,104
Posted By ross
Off course the same concept of Don's code. ...

Off course the same concept of Don's code.

Only 2 bytes shorter (but use a spare register).

It can also be done in other ways, like with indexed jump tables.
Forum: Coders. Asm / Hardware 04 November 2018, 23:23
Replies: 852
Views: 29,104
Posted By ross
I usually do this way: l move.l ...

I usually do this way:

l move.l #farcode-l,d0
jmp l(pc,d0.l)

ds.b 100000

farcode nop ;my dist>32k code
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