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Forum: Coders. Asm / Hardware Today, 14:17
Replies: 807
Views: 27,415
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 Today, 13:00
Replies: 807
Views: 27,415
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: 377
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: 377
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: 377
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: 670
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: 670
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: 778
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: 778
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: 778
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: 778
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: 778
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: 778
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: 632
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: 632
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: 778
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: 778
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: 807
Views: 27,415
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: 807
Views: 27,415
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: 807
Views: 27,415
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: 807
Views: 27,415
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: 643
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: 807
Views: 27,415
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: 807
Views: 27,415
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
Forum: Coders. Asm / Hardware 03 November 2018, 19:17
Replies: 11
Views: 851
Posted By ross
Thanks Toni, these improvements in the emulation...

Thanks Toni, these improvements in the emulation of 'strange cases' are very useful.
Even though they actually use illegal or wrong modes, they make life simple for those who develop only on...
Forum: support.WinUAE 03 November 2018, 18:59
Replies: 31
Views: 1,956
Posted By ross
Another small question, but this is only a...

Another small question, but this is only a curiosity because it is certainly not a problem.
Why when q command is used there is no immediate quit, but a few others breakpoints/watchpoints are...
Forum: support.WinUAE 03 November 2018, 18:45
Replies: 31
Views: 1,956
Posted By ross
Yes! Bug defeated :) Thanks. :great

Yes! Bug defeated :)

Thanks.
:great
Forum: support.WinUAE 03 November 2018, 16:40
Replies: 31
Views: 1,956
Posted By ross
Sequence of tests, always replicable results: ...

Sequence of tests, always replicable results:

1) w 0 1 3, W 0 80, no crash

2) w 1 0 1, W 0 80, crash

3) w 0 0 1, W 0 80, crash

4) f 400, w 1 0 1, W 0 80, no crash
Forum: support.WinUAE 03 November 2018, 11:30
Replies: 31
Views: 1,956
Posted By ross
Another behavior that seems to confirm that...

Another behavior that seems to confirm that something is wrong.
Same situation as before, also always repeatable.

>f 400
Breakpoint added.
>w 0 1 3
Memwatch breakpoints enabled
0: 00000001 -...
Forum: project.WHDLoad 03 November 2018, 10:48
Replies: 3
Views: 232
Posted By ross
It seems like a good job to me You have...

It seems like a good job to me
You have realigned the data in the right way.
:great
Forum: support.WinUAE 02 November 2018, 22:56
Replies: 31
Views: 1,956
Posted By ross
I did dozens of tests to confirm the problem,...

I did dozens of tests to confirm the problem, and.. sometime the crash do not appear!
Maybe is only due to different timing on entering into debugger? (yes when i've no crash i've checked that i've...
Forum: Coders. Asm / Hardware 02 November 2018, 22:08
Replies: 11
Views: 851
Posted By ross
wow, this is a work for Toni :)

wow, this is a work for Toni :)
Forum: support.WinUAE 02 November 2018, 21:57
Replies: 31
Views: 1,956
Posted By ross
Ok sorry, sure always used H when f used :)

Ok sorry, sure always used H when f used :)
Forum: support.WinUAE 02 November 2018, 21:52
Replies: 31
Views: 1,956
Posted By ross
Repost because of the edit and page change. ...

Repost because of the edit and page change.
Strange output to the H command after the w trap:
>H
-1 00FC0F94 60e6 BT .B #$e6 == $00fc0f7c (T)
0 00000000 8000 ...
Forum: support.WinUAE 02 November 2018, 21:38
Replies: 31
Views: 1,956
Posted By ross
You are right but i've tested IPF images.. Maybe...

You are right but i've tested IPF images.. Maybe related?
I test with some standard ADF and report.
Forum: support.WinUAE 02 November 2018, 21:27
Replies: 31
Views: 1,956
Posted By ross
Sorry, I fail to understand how this can be...

Sorry, I fail to understand how this can be related to KS1.3.
(i've noticed some strange code in KS1.3 that do a 'copper' search from $0 but sure do not trash all like this and is totally...
Forum: support.WinUAE 02 November 2018, 19:09
Replies: 31
Views: 1,956
Posted By ross
Just tested 4.1.0b8 and 4.0.1 final (both 32...

Just tested 4.1.0b8 and 4.0.1 final (both 32 bit): same problem.
Forum: Coders. Asm / Hardware 02 November 2018, 10:24
Replies: 69
Views: 2,287
Posted By ross
Yes, your five unrolled points also works ;)

Yes, your five unrolled points also works ;)
Forum: Coders. Asm / Hardware 02 November 2018, 10:00
Replies: 11
Views: 851
Posted By ross
Actually even fixing the modulo (that cannot be...

Actually even fixing the modulo (that cannot be -2, must be a multiple of 4 to not misalign everything when you have a 32bit fetch),
i've a properly display only when single 32bit CAS in enabled...
Forum: Coders. Asm / Hardware 02 November 2018, 01:50
Replies: 69
Views: 2,287
Posted By ross
Hi NorthWay, it's not that easy. It is true...

Hi NorthWay, it's not that easy.
It is true that you can change the pointers at any time but the rules listed are always valid, this to support a sprite list in memory (contrary to BPLxPT that...
Showing results 1 to 40 of 1238

 
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