Search found 59 matches
- Fri Feb 19, 2021 8:44 pm
- Forum: News & Announcements
- Topic: Blitter version test
- Replies: 28
- Views: 1060
Re: Blitter version test
Hi! I have tested with my 520 STE and I get the $0040 value. Blitter reference: S9018AE MM9092V CPU: MC68000FN8 (so not CMOS version if I'm right) For fun, I have tested emulators with STE configuration: Hatari: $003F Steem SSE: $0000 (seems strange may have made a mistake ? but I have checked blitt...
- Thu Feb 18, 2021 5:28 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
- Wed Feb 17, 2021 10:20 am
- Forum: 680x0
- Topic: Devpac debugging tutorial
- Replies: 25
- Views: 814
Re: Devpac debugging tutorial
Although I recognize that debuggers of emulators can be very powerful, I still continue to use adebug (even under emulation) for debugging my own code.
It seems that not a lot of people use it, but I've always prefered it over monst.
It seems that not a lot of people use it, but I've always prefered it over monst.
- Sun Feb 14, 2021 10:10 pm
- Forum: Floppy Disk Preservation
- Topic: GOEX Drive from Centurion
- Replies: 8
- Views: 305
Re: GOEX Drive from Centurion
Hi,
I use GOEX in my STe, and there is nothing special to do: just copy valid images onto a blank card.
I use GOEX in my STe, and there is nothing special to do: just copy valid images onto a blank card.
- Fri Feb 12, 2021 6:30 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
Thanks for your comments !
And really sorry for the megaSTe
And really sorry for the megaSTe

- Sat Jan 23, 2021 2:41 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
Ok ! The mask and other blitter settings are different for each VBL according to the logo position and size.
- Fri Jan 22, 2021 9:11 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
Hi Slingshot, I have looked back at the source and here is how the cycles must be computed: There are, as you said, 120 + the lsr 8+2*d3 cycles are used by the CPU in between borders, with d3 always even. In addition there are also 4 cycles lost at blit launch and 4 cycles at blit end, so a sum of 1...
- Fri Jan 22, 2021 1:38 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
4 cycles are taken at blit launch and 4 cycles at blit end.
According to the code that does the launch and after the launch, the cpu may or not do some internal processing. In my code, if I remember well, the cpu can't do nothing during these cycles.
And I will check your calculations later !
According to the code that does the launch and after the launch, the cpu may or not do some internal processing. In my code, if I remember well, the cpu can't do nothing during these cycles.
And I will check your calculations later !
- Fri Jan 22, 2021 1:13 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
I'd need to take some time to analyse your message, but have you taken into account the blitter bus arbitration cycles ?
And the impact of the mask on the fist word for the blitting time ?
And the impact of the mask on the fist word for the blitting time ?
- Fri Jan 22, 2021 12:30 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
It is 8+2n, but take care that 2n will be rounded to 4 for odd values of n.
And I have written 8+4x because d3 is equal to x*2 in my code (x has other meaning than the number of shifts) to avoid this rounding to 4 problem.
And I have written 8+4x because d3 is equal to x*2 in my code (x has other meaning than the number of shifts) to avoid this rounding to 4 problem.
- Tue Jan 19, 2021 10:27 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
Very nice demo. I enjoyed that. The Star Wars Scroller has a nice draw distance. Did you use Photochrome for the graphics or is it all custom code? Thanks ! For the R2-D2 picture I did not use Photochrome, but I have used Zerkman's MPP converter that I have adapted to create a new mode (and corresp...
- Tue Jan 19, 2021 9:45 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
- Tue Jan 19, 2021 6:44 am
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
Hi, it's is definitively not compatible with Falcon, because of fullscreen switches not supported by the videl, and also of precise timings.neanderthal wrote: ↑Mon Jan 18, 2021 9:52 pm Quick tested on falcy and got similar style (mostly black with some artefacts at swiches)after the first screen or something
- Mon Jan 18, 2021 7:59 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
Thanks all of you for your nice comments !
Uko
Uko
- Mon Jan 18, 2021 7:58 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
Should it run on a MegaSTE? I see garbage instead of the pictures both in 16 and 8 Mhz. No sorry it won't work correctly on MegaSTE... The blitter requires one additional bus arbitration cycle on this computer, and especially in the MPP R2-D2 screen where it is used for changing the color palettes ...
- Sun Jan 17, 2021 10:47 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
Thanks! What a nice surprise, and a very neat demo indeed! All coded from scratch! I like that! Isn't it amazing that programming in assembly on an old machine is so much fun (more fun than any modern high level programming if you ask me). :wink: Thank you very much ! And I can't agree more, such a...
- Sun Jan 17, 2021 10:15 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
Re: New STe demo: The Star Wars demo by The Arctic Land
I like the screen with multicolor starship nmasked with STAR WARS text. I wonder how do you did this. The masking is quite simple: the falcon picture is 8 colors per line, so 3 bitplanes only. And the StarWars logo is displayed on the 4th bitplane only. With correct palette configuration, writing 0...
- Sun Jan 17, 2021 10:10 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
- Sun Jan 17, 2021 10:08 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
- Sun Jan 17, 2021 4:10 pm
- Forum: Coding
- Topic: Blitter Execution Times
- Replies: 44
- Views: 8725
Re: Blitter Execution Times
Hi !
I have finally finished my demo for which I've encountered the below problems. Now working on real HW and on Hatari !
https://www.atari-forum.com/viewtopic.php?f=1&t=39979
Thanks for your support !
Uko
I have finally finished my demo for which I've encountered the below problems. Now working on real HW and on Hatari !
https://www.atari-forum.com/viewtopic.php?f=1&t=39979
Thanks for your support !
Uko
- Sun Jan 17, 2021 4:04 pm
- Forum: Demos - General
- Topic: New STe demo: The Star Wars demo by The Arctic Land
- Replies: 40
- Views: 2188
New STe demo: The Star Wars demo by The Arctic Land
Hi ! I have just released a new demo for 2MB Atari STe, with Fullscreen and 12.5kHz MOD Music, hundreds of colours, blitter zooming FX. https://demozoo.org/productions/289094/ https://youtu.be/UEuqfD_gW6U All the code and music are available here: https://github.com/Uko-TAL/TheStarWarsDemo Enjoy ! U...
- Thu Dec 24, 2020 3:13 pm
- Forum: Demos - General
- Topic: Merry Xmas 2020 - Santa Demo
- Replies: 9
- Views: 543
Re: Merry Xmas 2020 - Santa Demo
Thanks ! It's nice. Merry Xmas !
- Thu Dec 24, 2020 1:40 pm
- Forum: 680x0
- Topic: STE MOD Play code for fullscreen demos
- Replies: 5
- Views: 2541
Re: STE MOD Play code for fullscreen demos
If some of you are interested, I've just pushed minor updates on the repository: 2 bug fixes, and add of a parameter to slightly shift the notes replay frequencies so as to be multiple of STE frequencies (allows to increase quality when not playing at 50kHz).
- Thu Sep 17, 2020 7:54 pm
- Forum: Coding
- Topic: Blitter Execution Times
- Replies: 44
- Views: 8725
Re: Blitter Execution Times
You can try it with Hatari devel version and it will be included in Hatari 2.3 I have done some tests and it seems that Hatari is very accurate now versus real HW for this blitter aspect ... but not the way I would have hoped ! :lol: Let me explain. In the screen I am coding, I encountered a bug wi...
- Fri Sep 11, 2020 9:40 am
- Forum: Coding
- Topic: Blitter Execution Times
- Replies: 44
- Views: 8725
Re: Blitter Execution Times
Great !!!
I'll try this with the develop version soon.
Thanks Nicolas.
I'll try this with the develop version soon.
Thanks Nicolas.