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Forum: Coders. Asm / Hardware Today, 16:21
Replies: 5
Views: 140
Posted By DanScott
DIWSTRT = $2c81 DIWSTOP = $2cc1 DDFSTRT =...

DIWSTRT = $2c81
DIWSTOP = $2cc1
DDFSTRT = $0038
DDFSTOP = $00d0

Try these ... otherwise the values you gave in the original post are offset too much to the right
Forum: Retrogaming General Discussion Today, 10:48
Replies: 25
Views: 802
Posted By DanScott
The A1200 didn't exist when many of these games...

The A1200 didn't exist when many of these games came out.

Chuck Rock came out sometime in early 1991
Forum: Coders. Asm / Hardware Today, 00:00
Replies: 5
Views: 380
Posted By DanScott
I'm tempted to say you should also pad out your...

I'm tempted to say you should also pad out your word values (although that is just personal preference, but to me, it makes it easier to read the code)


dc.w DIWSTRT,$1b51
dc.w DIWSTOP,$37d1...
Forum: Nostalgia & memories 17 September 2021, 16:05
Replies: 34
Views: 1,345
Posted By DanScott
Bodacious Bodean's Bordello Beauties

Bodacious Bodean's Bordello Beauties
Forum: Coders. Asm / Hardware 12 September 2021, 15:11
Replies: 9
Views: 600
Posted By DanScott
you could save the area of memory in the WinUAE...

you could save the area of memory in the WinUAE debugger perhaps ?

create a routine somewhere that goes:

lea AddressOfColours,a0
move.w #size,d0
clr.w $100


then use the "w" command to...
Forum: Coders. Asm / Hardware 12 September 2021, 12:12
Replies: 9
Views: 600
Posted By DanScott
http://deadliners.net/gradientmaster/ Try...

http://deadliners.net/gradientmaster/

Try this... it doesn't ouput the colour registers, so you can't paste straight into a copperlist

But would take 2 minutes to code a function to populate...
Forum: Amiga scene 12 September 2021, 11:53
Replies: 46
Views: 8,611
Posted By DanScott
Yeah, it might even be good for 4k intros, as the...

Yeah, it might even be good for 4k intros, as the asm binaries compress quite well (about 1.5k for Colombia music), so some decent (but maybe slightly simpler) tracks (coupled with Leonard LSP...
Forum: Amiga scene 11 September 2021, 22:57
Replies: 46
Views: 8,611
Posted By DanScott
AmigaKlang0.98...

AmigaKlang0.98 (http://xtr1m.com/downloads/AmigaKlangGUI_V0-98.zip) is now released.

Includes my new Aklang2ASM tool, to generate source code to "build" the instruments.

roughly 80% faster than...
Forum: Coders. Asm / Hardware 10 September 2021, 10:05
Replies: 52
Views: 6,131
Posted By DanScott
Are you sure that the compressed file size +...

Are you sure that the compressed file size + 0x355A, is not exceeding the 26040 bytes you allocated ?
Forum: Coders. Asm / Hardware 08 September 2021, 23:31
Replies: 16
Views: 844
Posted By DanScott
More than likely something is corrupting your...

More than likely something is corrupting your stack ?
Forum: Retrogaming General Discussion 06 September 2021, 19:59
Replies: 65
Views: 6,059
Posted By DanScott
It's being published by Rogue Games (I'm...

It's being published by Rogue Games (I'm currently working on a couple of games they are publishing too)
Forum: Nostalgia & memories 16 August 2021, 14:27
Replies: 81
Views: 24,605
Posted By DanScott
His facebook page

His facebook page
Forum: Nostalgia & memories 12 August 2021, 22:00
Replies: 81
Views: 24,605
Posted By DanScott
I have just heard that unfortunately, Paul Van...

I have just heard that unfortunately, Paul Van Der Valk passed away today

Sorry to be the bringer of this bad news :(
Forum: Retrogaming General Discussion 23 July 2021, 01:12
Replies: 128
Views: 14,440
Posted By DanScott
We tried to do this on Chuck Rock 2, but the...

We tried to do this on Chuck Rock 2, but the Amiga just wasn't quite up to it at a good frame rate. The Megadrive version uses this technique for the "back of a dinosaur" and "tree into lava" levels.
Forum: Coders. Asm / Hardware 26 June 2021, 12:38
Replies: 21
Views: 2,030
Posted By DanScott
You can effectively do that using dual playfield...

You can effectively do that using dual playfield (one playfield for background and 2nd playfield for moving bobs)... That way you probably *could* just clear the whole screen (using a combination of...
Forum: Nostalgia & memories 20 June 2021, 23:46
Replies: 66
Views: 9,813
Posted By DanScott
Probably sampled from the original mix, as the...

Probably sampled from the original mix, as the track starts with just the vocal bit more isolated

https://www.youtube.com/watch?v=2Gz1NSrPcpk
Forum: Retrogaming General Discussion 11 June 2021, 00:17
Replies: 6
Views: 718
Posted By DanScott
Don't think anyone involved with the demo...

Don't think anyone involved with the demo "re-released" it like that. Probably somone thought it was a good idea for some reason or other.
Forum: Coders. Asm / Hardware 24 May 2021, 13:53
Replies: 32
Views: 3,748
Posted By DanScott
I think there was some previous to...

I think there was some previous to Announce/Lemon.

I remember when it was released, and thinking that it was a nice variation on another one that I'd seen. Will have to have a dig around and see...
Forum: Retrogaming General Discussion 22 May 2021, 23:01
Replies: 743
Views: 64,351
Posted By DanScott
Nobody should be under any impression that ANY...

Nobody should be under any impression that ANY port of a (1986 and upwards) coin op would magically happen easily, with graphics just fed through some simple conversion tool.

It just wouldn't be...
Forum: Retrogaming General Discussion 21 May 2021, 01:25
Replies: 743
Views: 64,351
Posted By DanScott
Karnov might be a good one... perhaps Tiger Road...

Karnov might be a good one... perhaps Tiger Road (that got a piss poor conversion from US gold)

Wardner too is a great game, that never made it to Amiga


And I'll disagree that A500 can't do a...
Forum: Retrogaming General Discussion 19 May 2021, 20:09
Replies: 743
Views: 64,351
Posted By DanScott
would also seriously shaft the gameplay.. but...

would also seriously shaft the gameplay.. but ho-hum :D
Forum: Retrogaming General Discussion 19 May 2021, 14:43
Replies: 743
Views: 64,351
Posted By DanScott
Don't look at the hardware specs... look at the...

Don't look at the hardware specs... look at the actual game ;)
Forum: Retrogaming General Discussion 19 May 2021, 14:22
Replies: 743
Views: 64,351
Posted By DanScott
On a side note, and not trying to derail the...

On a side note, and not trying to derail the mcgeezer/DamianD beef...

Trojan should be pretty doable on A500 :)
Forum: Coders. Asm / Hardware 19 May 2021, 13:03
Replies: 32
Views: 3,748
Posted By DanScott
For efficiency, most rotozoomers will...

For efficiency, most rotozoomers will precalculate the code for generating a line worth of copper data using unrolled moves:

eg.

move.w XX(a0),YY(a1)
move.w XX(a0),YY(a1)
move.w XX(a0),YY(a1)...
Forum: Coders. Asm / Hardware 19 May 2021, 00:44
Replies: 8
Views: 1,321
Posted By DanScott
Yes, you can use a combination of SKIP's and...

Yes, you can use a combination of SKIP's and copper jumps to "repeat" a horizontal line on the next line.

Have a look at Roondar's post today about copper screen, he uses that technique (with some...
Forum: Coders. Asm / Hardware 15 May 2021, 12:11
Replies: 19
Views: 1,533
Posted By DanScott
Apart from the ones floating around in 1993 that...

Apart from the ones floating around in 1993 that came from Commodore
Forum: Coders. Asm / Hardware 13 May 2021, 15:41
Replies: 4
Views: 872
Posted By DanScott
You need to flip the byte order too for each...

You need to flip the byte order too for each line, as well as the bits within each byte
Forum: Coders. General 07 May 2021, 12:59
Replies: 13
Views: 1,448
Posted By DanScott
I use Arcane IFFMaster too occasionally ;)

I use Arcane IFFMaster too occasionally ;)
Forum: Coders. General 07 May 2021, 12:47
Replies: 13
Views: 1,448
Posted By DanScott
Ha! I still use TFA Converter for pretty much all...

Ha! I still use TFA Converter for pretty much all my stuff :) If it ain't broke.. etc...
Forum: Coders. General 07 May 2021, 11:27
Replies: 13
Views: 1,448
Posted By DanScott
Seems ok with V1.0 of TFAConverter (not sure if...

Seems ok with V1.0 of TFAConverter (not sure if this came before or after IFFConverter)

https://i.imgur.com/AyyFL65.png
Forum: Coders. Asm / Hardware 06 May 2021, 13:41
Replies: 9
Views: 1,249
Posted By DanScott
FMODE (fetch mode register) controls how much...

FMODE (fetch mode register) controls how much data is read by the DMA for bitplanes (and for sprites), and is an AGA only register.

When fetchmode for bitplanes is x2 or x4 (only available on...
Forum: Coders. General 06 May 2021, 11:55
Replies: 13
Views: 1,448
Posted By DanScott
what are the dimensions of the PNG? When you...

what are the dimensions of the PNG? When you convert the PNG to an IFF, is the IFF correct?

Perhaps increase the dimensions of the source image?
Forum: Coders. Asm / Hardware 05 May 2021, 22:23
Replies: 92
Views: 6,112
Posted By DanScott
I think that's the same as the one I had... don't...

I think that's the same as the one I had... don't remember exactly though.. I can't even remember what I had for breakfast most evenings !
Forum: Coders. Asm / Hardware 05 May 2021, 18:00
Replies: 3
Views: 669
Posted By DanScott
I wouldn't actually use a packer to pack it, as...

I wouldn't actually use a packer to pack it, as you just can't guarantee the entropy of that kind of data.

It's probably worth just trying to store the data as a bit stream in as few bits as...
Forum: Coders. Asm / Hardware 05 May 2021, 15:25
Replies: 14
Views: 1,149
Posted By DanScott
and just to add more (complexity)... movea.w...

and just to add more (complexity)...

movea.w #value,a0 will sign extend to a long..

so after:

movea.w #$8000,a0 = a0.l will contain$ffff8000
Forum: Coders. Asm / Hardware 05 May 2021, 13:43
Replies: 14
Views: 1,149
Posted By DanScott
LEA calculates an effective address... for...

LEA calculates an effective address... for example.

lea 2(a1,d4.w),a0

has a much different result than

move.l 2(a1,d4.w),a0


but in terms of operation, the 2 examples you provided do...
Forum: Coders. Asm / Hardware 05 May 2021, 13:13
Replies: 92
Views: 6,112
Posted By DanScott
It was 1993, and they were printed. Lost them a...

It was 1993, and they were printed. Lost them a long time ago
Forum: Coders. Asm / Hardware 05 May 2021, 01:05
Replies: 9
Views: 1,249
Posted By DanScott
Perhaps on the A4000 config, your code is running...

Perhaps on the A4000 config, your code is running with data fetch mode (FMODE register) already set to 32bit or 64bit bitplane fetch ?

Maybe try clearing FMODE register where you also set up your...
Forum: Coders. Asm / Hardware 04 May 2021, 23:34
Replies: 9
Views: 1,249
Posted By DanScott
As a quick fix, try waiting for line 16, then...

As a quick fix, try waiting for line 16, then again for line 17 before proceeding
Forum: Coders. Asm / Hardware 04 May 2021, 19:17
Replies: 92
Views: 6,112
Posted By DanScott
Yeah, mine were typeset properly. Can't remember...

Yeah, mine were typeset properly. Can't remember exactly when I got them, but it would have been around mid 1993 I think.

I remember at the time EVERYONE was hassling me for a copy :D
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