Dead Hackers Society Forum

[scene] Re: 3D textured tube

Fri, 10 May 2024 15:06:00 +0200

A nice texture mapped tunnel description. in Polish but with C example:
https://madteam.atari8.info/index.php?prod=fx#tunnel

[coding] Re: DMA volume hints

Thu, 21 Mar 2024 21:07:00 +0200

Thanks, will try.

[coding] Re: DMA volume hints

Wed, 20 Mar 2024 15:13:00 +0200

seems the audacity menus and naming have changed a bit:

https://manual.audacityteam.org/man/distortion.html

its the distortion effect, then select the "leveller" and then degree of levelling "4"

thats what I do anyway ;)

[coding] DMA volume hints

Wed, 20 Mar 2024 15:05:00 +0200

I actually find the balance between YM and DMA perfect on the STe, but it does require some work on the developer/musician side.

Don't forget the Falcon has different volume balance to the TT/STe

You could try the "maximiser" function in the Audacity sample editor. Alternatively, a bit of clipping is absolutely fine unless it sounds bad. Personally I run the maximiser function on the "heavy" setting, and then keep clipping the sample until it sounds bad and then undo the last volume boost.

Its actually possible to get the DMA to sound louder than the YM this way, but it depends of course.

[coding] DMA volume hints

Wed, 20 Mar 2024 15:01:00 +0200

[coding] Re: DMA audio volume?

Mon, 18 Mar 2024 10:02:00 +0200

None that I'm aware of. The thread(s) on AF implied that e.g. Xenon II really sounded worse than it should because of this. So if a big software house back in the 90s couldn't solve it I think there's no solution other than do the hardware mod.

[coding] DMA audio volume?

Fri, 15 Mar 2024 18:38:00 +0200

I like to use STE DMA audio for sound effects, while also playing YM music. The YM music volume is quite high compared to the DMA samples. I see some posts on Atari forum saying this is an actual hardware bug, and has workarounds involving soldering.

I can counter to a degree by increasing the volume of the samples, but for loud enough to my liking the samples gets clipped.

Is there any known software solution for cranking up the DMA volume a bit, or lowering the YM without having a musician redo the songs?

[scene] Re: 3D textured tube

Mon, 26 Feb 2024 10:21:00 +0200

You will have todo a lot of study on your own, good starting points are:

https://mikro.naprvyraz.sk/docs/index.htm
http://s390174849.online.de/ray.tscc.de/index.htm

And of course youtube, there's a tutorial for everything these days.

The intro you linked doesn't contain any 3D texture mapped objects, btw.

[scene] 3D textured tube

Sun, 25 Feb 2024 00:13:00 +0200

Hi friends,
I would like to ask you if you can teach me how to do a
three-dimensional textured tube on Atari ST .
I would like to do something like this:
https://www.youtube.com/watch?v=hqTI8vouca4

I would be very grateful if you can help me.

[scene] Re: SNDH and clobbered registers?

Sat, 24 Feb 2024 23:24:00 +0200

I would check the actual SNDH you're using to be sure. I suppose most SNDH players will save the registers, so even if it works in those it might not in your demo if you don't save regs.

--
Anders Eriksson
ae@dhs.nu

[scene] SNDH and clobbered registers?

Sun, 18 Feb 2024 23:21:00 +0200

Hi.

The "SNDH file structure, Revision 2.00" text doc has examples where all registers are saved for the init, exit, and vbl functions.

Is this a guarantee I can trust in practice?

[ct60] Re: CT60+SV+EtherNat continued

Thu, 11 Jan 2024 21:54:00 +0200

(while digging up some old information)

This post really made me chuckle. :-) Hats off David Galvez and others, in 2024 we indeed do have a pretty cool USB stack on our Atari machines.

Someone mentioned it in some other post a few years ago... I also miss the times when this board was the central hub of all cool stuff happening around CT60 and CTPCI. :(

[scene] Dune on YT

Sun, 17 Dec 2023 22:00:00 +0200

Hello, after a long time spent hunting down broken floppies and corrupted code, we (Dune) are happy to present you our Youtube channel. It features some well known material but also some more obscure and even some unseen before stuff. Enjoy the trip down the memory lane!

Regards also to the people who recorded a few of the videos in this playlist!!

https://www.youtube.com/playlist?list=PLs4IoluFaVlt7KFEI_WNNkXvrDeDB-6wu

[scene] testthread

Sat, 11 Nov 2023 00:01:00 +0200

test from new server

[scene] Re: Democyclopedia book out now!

Fri, 27 Oct 2023 22:31:00 +0200

Sorry saw your reply only now. I mailed you a photo of it just now.

[coding] Re: DSP memorymap problem

Wed, 11 Oct 2023 00:21:00 +0200

After some more tests, it works perfectly for all memory overflow tests :

The secret is to label the beginning of each memory bank (X,Y and P)

For example:

ORG x:0

xmem_start:
first_x_variable dc 0
...

; Test the overflow of the internal X memory bank
IF (*-xmem_start)>$200
FAIL "Internal X memory overflow:",(*-xmem_start)
ENDIF

ORG x:$2000

nth_x_variable: dc 0

; Test the overflow of the external X memory bank
IF (*-xmem_start)>$4000
FAIL "External X memory overflow:",(*-xmem_start)
ENDIF

Then, you do the same for Y memory :

ORG y:0

ymem_start:
first_y_variable: dc 2000

IF (*-ymem_start)>$200
FAIL "Internal Y memory overflow:",(*-ymem_start)
ENDIF

and so on for every bank of memory you have to test.

And of course, the same for the P memory.

; Interrupt vector 0, start address of the DSP program
ORG P:0
startcode: jmp <$40

; Begining of the code
ORG P:$40
...

In fact, you just have to set the 3 variables
xmem_start
ymem_start
pmem_start

and all the compiler memory tests can be done with the * character.

Thanks again ggn.

Regards
Thadoss.

[coding] Re: DSP memorymap problem

Tue, 10 Oct 2023 23:55:00 +0200

After some more tests, the following is working :

IF (*-startcode)>$200
FAIL "External Y memory overflow:",(*-startcode)
ENDIF

The compiler now returns the following message:

**** 1540 [XXX.ASM 1524]: ERROR --- External P memory overflow:2047

No need to use endcode variable, I can use the star '*' character again.
But I still have to label the beginning of the code section.
I'll do some more tests on the X: memory and the Y: memory now.

Any idea how to write the memory value in hexa in the message ?

Regards
Thadoss

[coding] Re: DSP memorymap problem

Tue, 10 Oct 2023 23:34:00 +0200

Hi ggn,

You made my day, thanks a lot.
I insisted with the * character, but I didn't think about using start and stop labels.

It works perfectly now.

Best regards.

Thadoss

[coding] Re: DSP memorymap problem

Tue, 10 Oct 2023 16:19:00 +0200

Hi Thadoss,

Something like this should do the trick, I think:

startcode:
dsr $8000
endcode:

if (endcode-startcode)>$4000
fail "External Y memory overflow"
ENDIF

...but of course I'd like to take the opportunity to plug in for the assembler I'm working on, rmac :). The following is equivalent:

.56001
.org y:

startcode:
rept 6000
nop
nop
nop
endr
endcode:

.print (endcode-startcode)
.if (endcode-startcode)>$4000
.print "External Y memory overflow"
.end
.ENDIF

[coding] Re: DSP memorymap problem

Sat, 30 Sep 2023 09:54:00 +0200

Hi Atarians,

I used to code with Qdsp, but after speaking with Mikro last year at sillyventure, I tried and adopted the Motorola tools (with wine under Linux).

With Qdsp, I used to test the memory space boundaries with assembler commands like this :

IFLE $4000-*
FAIL "External Y memory overflow"
PRINTVAL $4000-*
ENDC

But I don't know how to do the same with Motorola DSP assembler

I tried :

IF $4000-*>0
FAIL 'External Y memory overflow'
ENDIF

IF is not recognised (ERROR --- Operation not allowed with address term (Operand field)

FAIL always return a compiler error ("External Y memory overflow" without any other comment

ENDIF without associated IF directive

Any tip to fix this ?

Regards
Thadoss

[scene] Re: Democyclopedia book out now!

Thu, 31 Aug 2023 19:21:00 +0200

@MetalSnake or anyone else with the English book in their hands, can you please send me a picture at survivor@atari.org? My pubhisher swiftly mailed back that the copy he owns shows not such a flaw.

[scene] Re: Democyclopedia book out now!

Thu, 31 Aug 2023 18:40:00 +0200

@MetalSnake : seriously, the table of content is in French? Shit, I wasn't given the opportunity to check on the final product. Sorry for such a mistake. Will forward to the publisher asap even though there is not much we can do about it right now.

[scene] Re: Democyclopedia book out now!

Tue, 29 Aug 2023 12:03:00 +0200

Took over a month for them to deliver it. But I finally got it.

And at first I thought I got the french version because the table of contents is still in french. :D

[scene] OFAM Atari Meeting GER 2023

Fri, 25 Aug 2023 16:50:00 +0200

The 16th OFAM will take place from 2023/10/13 to 2023/10/15

visit ofam.lima-city.de

The OFAM is an annual meeting for the fans of all Atari computers and consoles from 8 to 32 bit, from XL to Falcon with CT60 and from VCS to the Jaguar. It is held in the small upper-franconian village Muenchberg, 40 kms away from the czech-border.

Not only Atarians from Germany, but also from our EU-neighbour states do visit the OFAM on a regular base.

This is a 2 days event, you can arrive on Friday evening and stay until Sunday evening. The Saturday is the only day with an official part, usually there are a lot of Highlights... beside a good program (see the links below), you can play Atari games, via a Video-beamer on a big screen and network your Atari to others. Also there will be the possibility to drink some of the famous local beers and just have fun, or play a match of table-tennis.

Sure everyone can bring hard- and software and buy/sell or swap it.

The meeting itself will be absolutely FREE, but to leave a small gift to exceed the costs would be great!

On this point I would like to thank the YMCA Muenchberg, without them, the OFAM would not exist! Thank you for 9 years of OFAM!

I hope YOU will join the OFAM the next time and we see us there for some great hours of Atari!

If you want a place for sleep, then contact me via email! You can sleep for free on the floor or resident in a vacant room

[scene] Re: Democyclopedia book out now!

Thu, 24 Aug 2023 19:37:00 +0200

@Evil : guess the date stamped on the parcel can help finding out which one of these parcels you have received. :)

[scene] Re: Democyclopedia book out now!

Thu, 24 Aug 2023 17:18:00 +0200

It looks like I've been an impatient kid.
The book arrived today, like a miracle.

Not very happy about the delays and lack of communication, but the book did arrive after four months.

Not sure if it's the original book they said was sent back in June, or if it's the replacement they say was sent in July or if it's a copy shipped after my last complaint a couple of weeks ago.

Anyway it arrived.

--
Anders Eriksson
ae@dhs.nu

[scene] Re: Democyclopedia book out now!

Wed, 23 Aug 2023 07:44:00 +0200

Hi Anders,

Thx for the info I have just sent a mail to my publisher, will let you know about a reply. Sorry for the inconvenience..

[scene] Re: Democyclopedia book out now!

Tue, 22 Aug 2023 22:01:00 +0200

Hi Seb and Oliver,

perhaps I wasn't patient enough and my second copy will show up in the coming days too like for Paranoid.
They've been quick to answer email earlier, but stopped now when I finally gave up waiting and wanted a refund if they won't send a book. It's not a good sign.

Anyway my order was two english books, I received one in late June so still one to go.

Order: JPGBKINLK Placed on 03/15/2023 09:07:32
Democyclopedie - The Encyclopedia of Atari ST Demos e31.00 2 e62.00

Products
e62.00

Discounts
e0.00

Gift-wrapping
e0.00

Shipping
e16.00

Total Tax paid
e0.00

Total paid
e78.00

--
Anders Eriksson
ae@dhs.nu

[scene] Re: Democyclopedia book out now!

Tue, 22 Aug 2023 20:47:00 +0200

Sorry to read so, to be honest I have never ordered anything from them, yet I received my free copy of the book as planned.

Can you tell what book is currently missing from your latest order? The publisher always replies to my messages, maybe I can help here.

[scene] Re: Democyclopedia book out now!

Mon, 21 Aug 2023 11:08:00 +0200

(Almost) the same happened to me, i ordered two and got one. Had to ask twice as well but i was being told they were actually out of stock and had to print new ones. I was more lucky than evil was and got my second copy a couple of days ago.

The Paranoid