Search found 1252 matches

by npomarede
Wed Oct 31, 2018 7:29 pm
Forum: Hatari
Topic: Blitter emulation bug?
Replies: 3
Views: 934

Re: Blitter emulation bug?

Well, you can of course :) But as the results are "undefined" (at least not easily predictable for an emulator), you might find cases where settings both bits gives the correct result in Steem and not in Hatari, and other cases where it's the opposite. Hopefully someone will have time to d...
by npomarede
Wed Oct 31, 2018 5:24 pm
Forum: Hatari
Topic: Blitter emulation bug?
Replies: 3
Views: 934

Re: Blitter emulation bug?

Hi I think that's a known bug that was already reported in hatari where emutos had some issues too when drawing some icons. If you check hatari-devel mailing list archive for the the thread "Blitter emulation corner case" from 2018/05/09, I think it describes the same issue with some detai...
by npomarede
Sat Oct 20, 2018 8:36 am
Forum: Hatari
Topic: Drone by Dead Hackers Society demo glitches
Replies: 9
Views: 1791

Re: Drone by Dead Hackers Society demo glitches

There's no such option in the SDL UI, it's rather limited :)
by npomarede
Fri Oct 19, 2018 8:09 pm
Forum: Hatari
Topic: Drone by Dead Hackers Society demo glitches
Replies: 9
Views: 1791

Re: Drone by Dead Hackers Society demo glitches

Yes, there is not enough space in the GUI but it could be specificied that it's STF only in the doc.
by npomarede
Fri Oct 19, 2018 8:10 am
Forum: Hatari
Topic: Drone by Dead Hackers Society demo glitches
Replies: 9
Views: 1791

Re: Drone by Dead Hackers Society demo glitches

Drone is an STE demo, so there's no wakestate involved, no need to check their different values :)
by npomarede
Thu Oct 18, 2018 1:18 pm
Forum: Hatari
Topic: Falcon030 Blitter emulation in Hatari
Replies: 7
Views: 918

Re: Falcon030 Blitter emulation in Hatari

No problem, take your time ; I'm also rather limited on spare time at the moment, so as long as problems are fixed in the end, there's no rush.

EDIT : just to know how you could test this later with the devel version, which OS do you use ? Do you compile Hatari yourself ?
by npomarede
Thu Oct 18, 2018 8:11 am
Forum: Hatari
Topic: Falcon030 Blitter emulation in Hatari
Replies: 7
Views: 918

Re: Falcon030 Blitter emulation in Hatari

Hi yes at the moment, blitter was really oriented toward STE mode, not falcon. And while the blitter is in hog mode, the dsp part is also suspended (instead of running it in parallel). This should be an easy fix in the blitter code, but if you could provide me one simple program that just play an MP...
by npomarede
Wed Oct 17, 2018 1:33 pm
Forum: Hatari
Topic: Falcon030 Blitter emulation in Hatari
Replies: 7
Views: 918

Re: Falcon030 Blitter emulation in Hatari

Thanks for the reply. I'll have tun run some more tests to try and figure out what's going on. In some cases I rely on the fact that the blitter and CPU can run in paralell on the F030 as long as the instructions and data accessed after starting the blitter are precached (no bus activity by CPU). P...
by npomarede
Mon Oct 15, 2018 8:31 am
Forum: Hatari
Topic: Whitewater madness problem
Replies: 4
Views: 1101

Re: Whitewater madness problem

Which program do you start from all the .PRG on this disk ?
As noted, this is is not the original game, but a different version with sources from the author.
by npomarede
Sun Oct 14, 2018 5:01 pm
Forum: Hatari
Topic: D-bug 197 bug
Replies: 4
Views: 1877

Re: D-bug 197 bug

Hi
no problem here, I used version from http://www.pouet.net/prod.php?which=30695.
I tried with TOS 1.62 FR and 1.04FR, notice you need to have 4 MB of emulated RAM to run this game.

Nicolas
by npomarede
Sun Oct 14, 2018 4:50 pm
Forum: Hatari
Topic: Whitewater madness problem
Replies: 4
Views: 1101

Re: Whitewater madness problem

Hi what version of the game are you using ? I have no problem with "Whitewater Madness (10 sectors per track).zip". Game loads, I reach title screen with sample music. Then you need to press fire on the joystick (or ctrl key if you enabled joystick emulation). It will ask for player's name...
by npomarede
Tue Sep 11, 2018 7:46 pm
Forum: Demos - General
Topic: Parallax Distorter 2
Replies: 26
Views: 3579

Re: Parallax Distorter 2

Well, the first issue that was fixed before, was that i modified hskip/modulo on the first line (syncline), where I do not open the right border (my mistake). Since the value is latched only when the display is active (as I read in your source code, thank you!), I think I was in a bit of a grey zon...
by npomarede
Thu Sep 06, 2018 8:39 pm
Forum: Demos - General
Topic: Parallax Distorter 2
Replies: 26
Views: 3579

Re: Parallax Distorter 2

Thanks so much for testing! I have an idea (though I’m a bit surprised I coded it this way, and even more surprised that the emulators didn’t catch this). Hi if you find the difference when demos runs OK under Hatari but not on real STE and you have a fix for that, I would be interested to know wha...
by npomarede
Fri Aug 10, 2018 4:31 pm
Forum: Hatari
Topic: How to get Hatari working on High Sierra ? (OSX)
Replies: 6
Views: 1214

Re: How to get Hatari working on High Sierra ? (OSX)

Hi
note that according to this commit in SDL sources https://hg.libsdl.org/SDL/rev/399cc39583cc , SDL 2.0.9 should have better support for various XBOX, PS4 and Nintendo controller.
Maybe this will also help supporting PS3 controllers in a more unified way.
Nicolas
by npomarede
Tue Jul 31, 2018 7:48 pm
Forum: Hardware
Topic: The SECRET VIDEO MODE in an ST: 400 lines in COLOR (and with 72 Hz)!
Replies: 81
Views: 11122

Re: The SECRET VIDEO MODE in an ST: 400 lines in COLOR (and with 72 Hz)!

This is great !
Guess I will have to add this to Hatari, but this will require a few changes as video conversion routines don't expect this mix :)
by npomarede
Wed Jun 13, 2018 12:50 pm
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 5269

Re: Mega STe differences ?

Note that it doesn't necessarily means that your drive has a slower settle time. This might depend, among other things, on the utility you used to write the ST/MSA image and how the sectors are physically laid out on the track. As troed wrote, I had the problem with the floppy he duplicated himself...
by npomarede
Wed Jun 13, 2018 9:00 am
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 5269

Re: Mega STe differences ?

That might be part of the problem. Settle delay is not enabled and the sector might not read correctly. It shouldn't be fatal if retry would be performed properly, but forcing read errors under emulation it seems there is some kind of bug at the retry logic. Troed? If step with verify is enabled, t...
by npomarede
Tue Jun 12, 2018 10:09 pm
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 5269

Re: Mega STe differences ?

Sorry, this was not detailled enough. This is what happen when 2nd part of the demo is loaded using direct FDC accesses (1st part is loaded using TOS calls) : fdc type I seek dest_track=0x2 spinup=on verify=off steprate_ms=3 drive=0 tr=0x2 head_track=0x2 VBL=209 video_cyc=7492 324@14 pc=fc160a ... f...
by npomarede
Tue Jun 12, 2018 12:30 pm
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 5269

Re: Mega STe differences ?

where mine was $13, missing the "verify" bit, I guess that might be an important bit I was missing :D Yeah that's the one I had to add to get Closure to load on Nicolas' drive. Seek with verify it's usually not needed. It might suggest some kind of timing problem. May be you were not wait...
by npomarede
Tue May 22, 2018 9:36 pm
Forum: Coding
Topic: Blitter sound routine
Replies: 79
Views: 20052

Re: Using blitter for sound mixing

Great ! Hopefully, doing the same in ASM should not be a problem now that you have the logic right in C :)
by npomarede
Thu May 17, 2018 10:08 am
Forum: Coding
Topic: Blitter sound routine
Replies: 79
Views: 20052

Re: Using blitter for sound mixing

Hi yes, that's the idea :) working with a larger buffer (triple or even more) is a good alternative too, because you don't have to change the number of generated sample per VBL, you just have to stop generating samples at one point when the buffer is too much "in advance" (this is similar ...
by npomarede
Wed May 16, 2018 9:25 pm
Forum: Coding
Topic: Blitter sound routine
Replies: 79
Views: 20052

Re: Using blitter for sound mixing

Well, that's the problem when you want to play continuous samples with dma audio : you can't base your numbers on 50 VBL, because in fact a PAL STF/STE has 50.0527 VBL per second :) Here's why : base cpu clock is 8021247 Hz and we know one VBL is always 160256 cycles when shifter is set to 50 Hz. If...
by npomarede
Wed May 16, 2018 1:13 pm
Forum: Coding
Topic: Blitter sound routine
Replies: 79
Views: 20052

Re: Using blitter for sound mixing

About quality of pre-transpose + blitter mixing, there is a way to check : if you run BLSplay in test mode (add -test to command line),it will dump the generated sample into a file instead of playing with DMA sound. This file will be generated into .\_logs\ASM\ or .\_logs\C\ or .\_logs\PC\ accordin...
by npomarede
Tue May 15, 2018 10:40 pm
Forum: Coding
Topic: Blitter sound routine
Replies: 79
Views: 20052

Re: Using blitter for sound mixing

About using loop mode instead of play once : for sure it would be cleaner technically speaking but I am not a fan of requiring a second step to run the routine during the VBL because this routine allows to have full remaining time for graphic effects, or blitting without sharing bus, or stable inte...
by npomarede
Mon May 14, 2018 9:57 pm
Forum: Coding
Topic: Blitter sound routine
Replies: 79
Views: 20052

Re: Using blitter for sound mixing

Thank you for your tests and detailled answer :) I have tried to figure out where the clicks can come from. I have the feeling that some appear when the sample is retriggered at each new note (sample is retriggered without any smoothing). On Facebook, Troed has also talked about usual clicks on STe...

Go to advanced search