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Forum: Coders. Asm / Hardware Yesterday, 19:46
Replies: 4
Views: 225
Posted By ross
With all DMAs off excluding blitter (yes, BLTPRI...

With all DMAs off excluding blitter (yes, BLTPRI does practically nothing in this situation because of idle cycles) you can do (227/2) writes per line.

(10240/2)/(227/2)=...
;)

EDIT:
This is...
Forum: Coders. Asm / Hardware Yesterday, 18:11
Replies: 13
Views: 302
Posted By ross
I was explaining to someone, just yesterday, the...

I was explaining to someone, just yesterday, the advantages of the Scc instructions, but I'm don't even remember who it was..

I need some rest :)
Forum: Coders. Asm / Hardware Yesterday, 17:16
Replies: 13
Views: 302
Posted By ross
Nice!

Nice!
Forum: Coders. Asm / Hardware Yesterday, 16:48
Replies: 13
Views: 302
Posted By ross
ahaha, this made my day :) In fact I was...

ahaha, this made my day :)

In fact I was thinking about how to solve this problem, but today doesn't seem to be the right day (I'm not in the mood :().

[off-topic]
It happens when you are...
Forum: Amiga scene 13 April 2021, 23:06
Replies: 894
Views: 103,583
Posted By ross
NTSC quick fix into The Zone! Copy over PAL...

NTSC quick fix into The Zone! Copy over PAL trainer.
Forum: Amiga scene 13 April 2021, 22:39
Replies: 894
Views: 103,583
Posted By ross
arghh, I completely forgot NTSC for the trainer! ...

arghh, I completely forgot NTSC for the trainer!
(game of course works properly)

Well, with AlphaOne we will try to fix the intro (it does not support NTCS) ;).
Alternatively a command line...
Forum: Coders. Asm / Hardware 13 April 2021, 15:54
Replies: 7
Views: 366
Posted By ross
Of course depends on how you are handling...

Of course depends on how you are handling ramaining part of the copper list, but there are two ways:
1) set the second copper pointer and jump there
2) reset the first copper pointer to the initial...
Forum: Coders. Asm / Hardware 12 April 2021, 21:12
Replies: 2
Views: 193
Posted By ross
Raise your task priority, then do repeated...

Raise your task priority, then do repeated AllocMem () (with big value), if if fail decrease memory request and repeat.
This give you in return the biggest memory chunk, so you have to repeat until...
Forum: Coders. Asm / Hardware 12 April 2021, 20:56
Replies: 7
Views: 366
Posted By ross
If I am not misunderstood you, you would like to...

If I am not misunderstood you, you would like to avoid duplicating the copperlist after the palette setup.
Simply put the jump inside the copper list itself.

Copperlist:
color_setup1...
Forum: News 12 April 2021, 13:51
Replies: 49
Views: 2,722
Posted By ross
You should try Crantek by Shrinkberry, very...

You should try Crantek by Shrinkberry, very effective! :p
Forum: Coders. General 12 April 2021, 12:31
Replies: 23
Views: 1,148
Posted By ross
Ok, I was forgetting! Yesterday I made a little...

Ok, I was forgetting!
Yesterday I made a little custom exe unpacker for Wrong Way Driver (of which I had completely missed the thread before!) and I therefore understood what 60KB you were talking...
Forum: project.Amiga Game Factory 09 April 2021, 15:04
Replies: 119
Views: 24,230
Posted By ross
Great question.. Well, the code is somewhere...

Great question..

Well, the code is somewhere on my hard drive, so it's possible that sooner or later it will come to light ;)
Forum: Coders. Asm / Hardware 09 April 2021, 14:59
Replies: 2
Views: 190
Posted By ross
Yes and yes. If you specifically want IRQ6 then...

Yes and yes.
If you specifically want IRQ6 then a CIAB timed event (per scanline also with copper).
Forum: Coders. General 08 April 2021, 18:29
Replies: 23
Views: 1,148
Posted By ross
Add the unpacker code to it.. :D

Add the unpacker code to it.. :D
Forum: Coders. General 08 April 2021, 18:11
Replies: 23
Views: 1,148
Posted By ross
PAQ8 is a CM based compressor. Context mixing...

PAQ8 is a CM based compressor.
Context mixing algorithms are based on Bayesian inference, so it usually store the models in memory both at compression and decompression.

From Paq8px command line...
Forum: Coders. General 08 April 2021, 12:39
Replies: 23
Views: 1,148
Posted By ross
You should expect ZIP Deflate like compression...

You should expect ZIP Deflate like compression from S405
But I leave it to mr.spiv to advertise it :D
Forum: Coders. General 08 April 2021, 09:56
Replies: 23
Views: 1,148
Posted By ross
Yeah! S405!

Yeah! S405!
Forum: Coders. Releases 05 April 2021, 12:21
Replies: 18
Views: 951
Posted By ross
Your sources and notes are very well done! :cool ...

Your sources and notes are very well done! :cool
I would like to say the same about mine... :rolleyes
Forum: Coders. Releases 04 April 2021, 15:44
Replies: 18
Views: 951
Posted By ross
Nice intro, best in the compo. :great

Nice intro, best in the compo.
:great
Forum: Coders. Asm / Hardware 03 April 2021, 18:40
Replies: 96
Views: 5,082
Posted By ross
Somewhere you have to take a cue :D Better...

Somewhere you have to take a cue :D

Better if I remove the image, I get a headache just looking at it :p
Forum: Coders. Asm / Hardware 03 April 2021, 17:13
Replies: 96
Views: 5,082
Posted By ross
Right. But you need one more register and one...

Right.
But you need one more register and one more instruction ;)



---
The effect is this, just a couple of hundred bytes. Inspired by Alcatrax/Kefrens bars, massive blitter feedback effect...
Forum: Coders. Asm / Hardware 02 April 2021, 18:28
Replies: 96
Views: 5,082
Posted By ross
I'm writing a very tiny intro and I need a...

I'm writing a very tiny intro and I need a circular 256 byte array of unsigned 2 quadrants sine values (to add it to a bitmap pointer).

I ended up with:
;0->$ff->0 circular, len=256...
Forum: Coders. Asm / Hardware 31 March 2021, 09:36
Replies: 1
Views: 314
Posted By ross
Full exe that hung the machine please :)

Full exe that hung the machine please :)
Forum: Coders. Asm / Hardware 30 March 2021, 09:53
Replies: 4
Views: 494
Posted By ross
Unfortunately it is not possible to do this with...

Unfortunately it is not possible to do this with copper on OCS because VHPOSW is among the registers on which copper cannot write (not even by setting the CDANG bit in COPCON).
Usually you can write...
Forum: Coders. Asm / Hardware 29 March 2021, 12:08
Replies: 3
Views: 593
Posted By ross
(x1,y1)(x2,y2) dx=|x1-x2| dy=|y1-y2| \ ...

(x1,y1)(x2,y2)
dx=|x1-x2|
dy=|y1-y2|

\ | /
\6 | 7/
5 \ | / 8
\|/
----X----
/|\
Forum: Nostalgia & memories 24 March 2021, 19:31
Replies: 535
Views: 155,543
Posted By ross
:agree --- There is a code path in...

:agree

---

There is a code path in Denaris that fail on 020+ processor because of an unsuccessful jump to 'misaligned address error vector' that end in:
jmp $fce2

Of course is a (love)...
Forum: Coders. Asm / Hardware 22 March 2021, 17:53
Replies: 44
Views: 2,468
Posted By ross
I LOVE this intro by Antiriad, so Amigaish and...

I LOVE this intro by Antiriad, so Amigaish and nostalgic.
Forum: Coders. Asm / Hardware 22 March 2021, 17:32
Replies: 44
Views: 2,468
Posted By ross
Just check the message I sent you 2 days ago :)

Just check the message I sent you 2 days ago :)
Forum: Coders. Asm / Hardware 21 March 2021, 22:38
Replies: 96
Views: 5,082
Posted By ross
Finally the 2+2 quadrant version. 40 bytes.....

Finally the 2+2 quadrant version.

40 bytes.. 38 byte if table of 1025 sine entries accepted.
Algorithm and precision are the same as the previous one.

The only advantage over a/b one is speed....
Forum: Coders. Asm / Hardware 21 March 2021, 16:20
Replies: 96
Views: 5,082
Posted By ross
46 bytes.. lea SinEntries*2(a0),a1 ...

46 bytes..

lea SinEntries*2(a0),a1
moveq #0,d1
.1 moveq #97,d0
ror.l #7,d0
move.l d1,d2
mulu.w d2,d2
sub.l d2,d0
swap d0
Forum: Coders. Asm / Hardware 21 March 2021, 11:10
Replies: 96
Views: 5,082
Posted By ross
:D:D:D :p That's what made me add that damn beq...

:D:D:D :p
That's what made me add that damn beq in my code.
Forum: Nostalgia & memories 21 March 2021, 10:07
Replies: 535
Views: 155,543
Posted By ross
Reach for the Skies: Hi! My name is Jim.....

Reach for the Skies:

Hi! My name is Jim.. and I am a computer programmer & funny.
My boss seems to disagree on both counts.. I wonder why?
Anyway.. thats enough about me...
What about you? Do...
Forum: Coders. Asm / Hardware 21 March 2021, 09:44
Replies: 96
Views: 5,082
Posted By ross
This one wins hands down. Max...

This one wins hands down.

Max AbsError=0.24%, Max RelError=0.53%, 138174 CPU cycles

Absolutely superb :great
Forum: Coders. Asm / Hardware 21 March 2021, 02:03
Replies: 96
Views: 5,082
Posted By ross
As I guessed: moveq #97,d0 ror.l ...

As I guessed:
moveq #97,d0
ror.l #7,d0

Max AbsError=1.56%, Max RelError=4.50%

:)
Forum: Coders. Asm / Hardware 21 March 2021, 00:12
Replies: 96
Views: 5,082
Posted By ross
Quasi-accurate 1+3 quadrant version. 48...

Quasi-accurate 1+3 quadrant version.

48 bytes.. perhaps me too missed some optimisation here.

lea SinEntries*2(a0),a1
moveq #3,d0
ror.l #2,d0
moveq #0,d1
.l move.l ...
Forum: Coders. Asm / Hardware 20 March 2021, 21:43
Replies: 96
Views: 5,082
Posted By ross
Well, I want these 14 bytes, I would stay to 44...

Well, I want these 14 bytes, I would stay to 44 bytes :D

Yes, the 24-byte version is awesome!
Forum: Coders. Asm / Hardware 20 March 2021, 21:39
Replies: 44
Views: 2,468
Posted By ross
I'm pretty sure I've seen modules with this...

I'm pretty sure I've seen modules with this "instrument without the note" pattern (I remember it because it seemed strange to me :)),
So a tracker/mplayer that supports it must certainly exist.
Forum: Coders. Asm / Hardware 20 March 2021, 21:22
Replies: 96
Views: 5,082
Posted By ross
How many byte you lose from one quadrant to four?...

How many byte you lose from one quadrant to four?
I have a feeling i could improve my code at this, but i can't figure out how.
My code could calculate 2 quadrants in the loop, but in order not to...
Forum: Coders. Asm / Hardware 20 March 2021, 19:51
Replies: 96
Views: 5,082
Posted By ross
46 byte I'll post the code when Dan gives the...

46 byte
I'll post the code when Dan gives the green light to everyone ;)

But just noticed one small thing and I call the referee if he lets me do it.
Since it is the extended version of the 30...
Forum: Coders. Asm / Hardware 20 March 2021, 19:43
Replies: 96
Views: 5,082
Posted By ross
Check this: exp(-((x-4)^2+(y-4)^2)^2/1000) +...

Check this:
exp(-((x-4)^2+(y-4)^2)^2/1000) + exp(-((x+4)^2+(y+4)^2)^2/1000) + 0.1exp(-((x+4)^2+(y+4)^2)^2)+0.1exp(-((x-4)^2+(y- 4)^2)^2)

Well, you can paste it in google.. :D
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