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Forum: Coders. Asm / Hardware Today, 00:35
Replies: 5
Views: 53
Posted By ross
:great

:great
Forum: Coders. Asm / Hardware Today, 00:19
Replies: 5
Views: 53
Posted By ross
Should work. I can only help you by debugging...

Should work.
I can only help you by debugging the executable..
Forum: Coders. Asm / Hardware Today, 00:08
Replies: 3
Views: 93
Posted By ross
Works for the described setup but.. you're...

Works for the described setup but.. you're calling for trouble in fast Amigas.
If you can, use blitter wait :)
Forum: Coders. Asm / Hardware Yesterday, 23:57
Replies: 5
Views: 53
Posted By ross
Hi Leonard, nothing special on SOFT IRQ, the...

Hi Leonard, nothing special on SOFT IRQ, the difference is that can only be triggered by the processor or the copper, unlike the others that are triggered also by external events.
Could you post a...
Forum: News Yesterday, 14:35
Replies: 23
Views: 585
Posted By ross
Thanks Toni! - New easy to use and...

Thanks Toni!



- New easy to use and transparent printf()-like debug logging method for developers: simply write parameters to address $bfff00 (byte, word and long accepted) one by one, then...
Forum: support.Hardware Yesterday, 14:29
Replies: 33
Views: 635
Posted By ross
This second button thing is always complicated :)...

This second button thing is always complicated :)

Could you try this? http://eab.abime.net/showpost.php?p=1351611&postcount=1520

Or simply the latest Rygar AGA version.

EDIT: just to see if...
Forum: support.Hardware 02 July 2020, 16:55
Replies: 4
Views: 235
Posted By ross
Into The Zone!

Into The Zone!
Forum: Coders. Asm / Hardware 02 July 2020, 16:25
Replies: 4
Views: 411
Posted By ross
Not that I know, but it would be really useful to...

Not that I know, but it would be really useful to have some visual tools (possibly in cross-development) for the management of the real-time color changes made with the copper on the...
Forum: Amiga scene 01 July 2020, 20:47
Replies: 149
Views: 35,453
Posted By ross
Removed, it's out of place :) Sorry.

Removed, it's out of place :)

Sorry.
Forum: Amiga scene 01 July 2020, 18:01
Replies: 149
Views: 35,453
Posted By ross
Removed, it's out of place :) Sorry.

Removed, it's out of place :)

Sorry.
Forum: support.WinUAE 30 June 2020, 19:57
Replies: 14
Views: 1,265
Posted By ross
Ok :) You know it, it's really a lot easier for...

Ok :)
You know it, it's really a lot easier for me to discuss technical issues, algorithms and code, than to write well in English.

Thanks for your patience :great
Forum: support.WinUAE 30 June 2020, 19:37
Replies: 14
Views: 1,265
Posted By ross
Yes, it's the reason why I made my statement:...

Yes, it's the reason why I made my statement: TOTROWS and HTOTAL specify display timing and is the same as PAL timing, so same H&V frequencies and DMA slots in a frame (I am aware that the different...
Forum: support.WinUAE 30 June 2020, 17:42
Replies: 14
Views: 1,265
Posted By ross
Yes, this is clear :) But what I wanted to...

Yes, this is clear :)

But what I wanted to understand concerns the wrong values reported for vertical video frequency and, consequently, SNDRATE.
Are they just 'cosmetic error' or are the values...
Forum: support.WinUAE 30 June 2020, 14:00
Replies: 14
Views: 1,265
Posted By ross
Hi Toni, I'm doing some test with SuperPlus...

Hi Toni, I'm doing some test with SuperPlus driver and noticed an oddity in WinUAE log.

I set the TOTCLKS=0xE2 and TOTROWS=0x137 tooltypes to simulate the same DMA slots as a normal PAL screen...
Forum: project.Amiga Game Factory 29 June 2020, 18:42
Replies: 136
Views: 10,469
Posted By ross
The game would be faster, a bit like PAL games in...

The game would be faster, a bit like PAL games in NTSC mode :).
Anyhow the screen mode doesn't properly fit :(, but.. let's think about it.

This unusual 720x400 VGA resolution requires 31788Hz...
Forum: project.Amiga Game Factory 29 June 2020, 16:22
Replies: 136
Views: 10,469
Posted By ross
Not so simple as you think. DblNTSC use a...

Not so simple as you think.

DblNTSC use a pretty uncommon 27Khz/58Hz frequency pair, and use a defauld DDFSTRT=$20 (so bye bye sprites..).

Much better to use an old 'industry' standard VGA...
Forum: Coders. Asm / Hardware 28 June 2020, 15:13
Replies: 4
Views: 411
Posted By ross
Sure you can. Change with copper, on the...

Sure you can.

Change with copper, on the right positions, on the fly, OSPRM bits in BPLCON4 register (a color bank selector for sprite, in your case in 16 colors).
Forum: Coders. Asm / Hardware 27 June 2020, 16:00
Replies: 35
Views: 2,083
Posted By ross
Yes, if I need some fast and dirty 'universal'...

Yes, if I need some fast and dirty 'universal' cache-on setup for all processors family I force BIT13=1, losing half of the Icache on 060.
Actually if code is only in supervisor mode I could set...
Forum: Coders. Asm / Hardware 27 June 2020, 15:37
Replies: 35
Views: 2,083
Posted By ross
:great You are right :) So 060...

:great


You are right :)



So 060 is broken :D
BIT13 was reused for FIC, on 030 it was for WA.
:p
Forum: Coders. Asm / Hardware 27 June 2020, 14:33
Replies: 35
Views: 2,083
Posted By ross
Ah! Système d'Exploitation :) Yes,...

Ah! Système d'Exploitation :)



Yes, publish it, thanks! (probably it concerns an addressing mode ignored by 000 or an instruction executed in a different order, I remember that in the past I...
Forum: Coders. Asm / Hardware 27 June 2020, 13:49
Replies: 35
Views: 2,083
Posted By ross
Yes sorry, OS, I used the Italian acronym but...

Yes sorry, OS, I used the Italian acronym but it's probably the same in French :)
Good tips, I'll try something ;)


Just to be sure, I disable it; I haven't stretched my brain for real cases :)...
Forum: Coders. General 27 June 2020, 13:08
Replies: 39
Views: 7,301
Posted By ross
Yep, I've somewhere in my hdd a test with a...

Yep, I've somewhere in my hdd a test with a pretty similar method :)
But failed because of the fixed-point math :(

Maybe on a 020+ or 030+/FPU could succeed, I've not tried.
When I have some...
Forum: Coders. Asm / Hardware 27 June 2020, 12:06
Replies: 35
Views: 2,083
Posted By ross
Yes, it is precisely for the reasons you have...

Yes, it is precisely for the reasons you have explained.

--

So the code blob need to be modified, I had no idea that the CPUSHA in some accelerator can hang the machine..
How to fast recognize...
Forum: Coders. General 27 June 2020, 11:47
Replies: 39
Views: 7,301
Posted By ross
Thanks Siekmansky. The challenge here is...

Thanks Siekmansky.

The challenge here is that the routine need to be for a bare 68k (16x16 mul, 32/16 div) and no FP and SIMD units.
Probably your code require a Pentium III processor, a bit too...
Forum: Coders. Asm / Hardware 25 June 2020, 18:18
Replies: 34
Views: 2,073
Posted By ross
:D I couldn't think of anything...

:D


I couldn't think of anything efficient..
To make up for it, 020+ version:
pt_E0_command
; cmd E0x (x=0 enable, x>=1 disable)
; d0 = x

lea $bfe001,a0
Forum: Coders. Asm / Hardware 25 June 2020, 17:17
Replies: 34
Views: 2,073
Posted By ross
Yep, that's what I thought of when I did it :D ...

Yep, that's what I thought of when I did it :D



Theoretically in motorola manuals module 8 is guaranteed for the second word of bxxx instructions.
But you never know that an extension to ISA...
Forum: Coders. Asm / Hardware 25 June 2020, 15:55
Replies: 34
Views: 2,073
Posted By ross
Speaking of non-understandable code: ...

Speaking of non-understandable code:
pt_E0_command
; cmd E0x (x=0 enable audio filter, x>=1 disable)
; d0 = x

moveq #-3,d1
subq.w #1,d0
blo.b .h
dc.w $08f9
.h dc.w ...
Forum: Coders. General 24 June 2020, 23:35
Replies: 39
Views: 7,301
Posted By ross
It is the way I tried initially. Unfortunately,...

It is the way I tried initially.
Unfortunately, even if in theory it is correct, it produces rounding error or results too far from what they are (full of mistakes..) in the table used by...
Forum: Coders. Asm / Hardware 23 June 2020, 18:58
Replies: 34
Views: 2,073
Posted By ross
Probably yes, but.. for some reason (probably...

Probably yes, but.. for some reason (probably because I patch existing code and I don't have control over the base register or it just isn't used and I need tiny pc-relative code) I find myself...
Forum: Coders. Asm / Hardware 23 June 2020, 17:30
Replies: 34
Views: 2,073
Posted By ross
I need PC relative code only. And in any case...

I need PC relative code only.
And in any case my solution is 2 bytes less ;)


Yep, when I have a base reg. I do the same.
But there are situations where I just can't.. (IRQ code where base reg....
Forum: Coders. Asm / Hardware 23 June 2020, 16:46
Replies: 34
Views: 2,073
Posted By ross
Today I learned something. I found/thought...

Today I learned something.

I found/thought of a little trick that I have never seen used in any 68k code snippet I've seen, but that is really useful and simple to overcome the lack of tst.x o(pc)...
Forum: Coders. General 22 June 2020, 17:58
Replies: 19
Views: 1,159
Posted By ross
Well, if you generate statically the mask at...

Well, if you generate statically the mask at run-time, you're right (the third option is impossible, A cannot be 0 when a single B=1 exist).
I've used 'wrong possible result' and not 'wrong result'....
Forum: Coders. General 22 June 2020, 16:15
Replies: 19
Views: 1,159
Posted By ross
Hi Asman :), no. D=AB+A'C B=0, A=0 -> D =...

Hi Asman :), no.

D=AB+A'C
B=0, A=0 -> D = 0 + 1*x= x==background
B=0, A=1 -> D = 0 + 0*x= 0==B (thanks to A=1)
B=1, A=0 -> D = 0 + 1*x= x==background
B=1, A=1 -> D = 1 + 0*x= 1==B (thanks to...
Forum: Amiga scene 22 June 2020, 15:53
Replies: 9
Views: 1,084
Posted By ross
Actually is the opposite (but who cares :)). ...

Actually is the opposite (but who cares :)).
The 'puppets' version is a chinese work derived from the original japanese silouetthe version.

And about the Atari ST version.. a good anim player but...
Forum: Coders. General 22 June 2020, 15:02
Replies: 19
Views: 1,159
Posted By ross
What alpine9000 wrote (and others before) is...

What alpine9000 wrote (and others before) is right.

I go into some technical details about the blitter, maybe is even clearer for you (it has been helpful to me in the past).

Suppose that your...
Forum: Coders. Asm / Hardware 18 June 2020, 12:26
Replies: 5
Views: 538
Posted By ross
Hi Graeme, various trackers effects work by...

Hi Graeme, various trackers effects work by changing the period, without deactivating the DMA, relying on the underlying looped sample.

A simple example:
SECTION engine,code_c

start...
Forum: support.WinUAE 14 June 2020, 22:34
Replies: 167
Views: 27,121
Posted By ross
Thanks! :great

Thanks!

:great
Forum: support.WinUAE 14 June 2020, 21:40
Replies: 167
Views: 27,121
Posted By ross
Well, now works. But I really prefer a no...

Well, now works.

But I really prefer a no scaling 1x/1x for the default 720x568 window in a "square pixel" monitor (like mine and the available majority).
This way Amiga pixel is sharp and you...
Forum: support.WinUAE 14 June 2020, 19:17
Replies: 167
Views: 27,121
Posted By ross
When I launch in Quickstart mode now the view...

When I launch in Quickstart mode now the view appear squashed (with black bars at top and bottom).
If I select 'no scaling 1x/1x' all back to normal (like the default on previous versions).

EDIT:...
Forum: Coders. Asm / Hardware 14 June 2020, 12:23
Replies: 6
Views: 518
Posted By ross
Can you post a WinUAE savestate with a...

Can you post a WinUAE savestate with a non-working example?

On AGA there is some weirdness with high FMODE fetches/alignment/MODULO, but not for FMODE=0 (that I know of..).
See:...
Showing results 1 to 40 of 2603

 
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