It's no more a MiSTery

[slingshot]

Any ideas about the image shifting across, I noticed that someone else reported the same thing?

I didn't experience such thing on my displays.

[joska]

I've been following this topic with great interest. Time to dig my MiST out of storage I think Does this core support 15KHz screens?

[Total Eclipse]

Any ideas about the image shifting across, I noticed that someone else reported the same thing?

I didn't experience such thing on my displays.

Unfortunately this is exactly the kind of issue that's almost impossible to diagnose.

I've had an OSSC on my wish list for a while, perhaps nows the time to invest.

Out of interest, does the video optput part of any core cone from a standard library (if such a thing exists), or is it developed for each core? I've never seen the issue with the original ST core. Similarly, Till's original Spectrum core worked fine on my TV's, yet sorgelig's Spectrum core usually gives diagonal interference lines for me.

[slingshot]

I've been following this topic with great interest. Time to dig my MiST out of storage I think Does this core support 15KHz screens?

viewtopic.php?f=115&t=37297#p379784
What do you think?

[slingshot]

Out of interest, does the video optput part of any core cone from a standard library (if such a thing exists), or is it developed for each core? I've never seen the issue with the original ST core. Similarly, Till's original Spectrum core worked fine on my TV's, yet sorgelig's Spectrum core usually gives diagonal interference lines for me.

Scandoubler and OSD are almost the same in every core, but how the video signal is generated is up to the specific implementation of the (emulated/recreated/whatever) machine.

[Total Eclipse]

Scandoubler and OSD are almost the same in every core, but how the video signal is generated is up to the specific implementation of the (emulated/recreated/whatever) machine.

That makes sense. I guess it's a fiddly thing to get right, I recall the number of releases for the Amstrad core some time ago that were focused on tweaking video output.

I'll be happily testing any new releases of your core, you never know if a minor change somewhere along the line will fix the issues I see.

In the mean time, please keep up the good work, it's very much appreciated.

[slingshot]

Scandoubler and OSD are almost the same in every core, but how the video signal is generated is up to the specific implementation of the (emulated/recreated/whatever) machine.

That makes sense. I guess it's a fiddly thing to get right, I recall the number of releases for the Amstrad core some time ago that were focused on tweaking video output.

As the video signals (especially sync signals) are faithfully reproduced from the original schematics of the main ASIC, it won't be changed. It can be some FPGA-specific thing which produces a glitch, or more likely something with your display which doesn't agree fully with the video. As it has the same timing as the original, it would worth to try an original ST(e) machine if it produces the same glitch or not.

[MasterOfGizmo]

I've been following this topic with great interest. Time to dig my MiST out of storage I think Does this core support 15KHz screens?

Sure. Even with YPbPr output on a modern Samsung flat panel TV. I am enjoying all those demos that way ...

[jamesrc]

I've been following this topic with great interest. Time to dig my MiST out of storage I think Does this core support 15KHz screens?

I'm using it exclusively on a 15Khz display.

[Total Eclipse]

I've done a little more testing this fine Sunday afternoon, and have one more issue to bring up.

Loading the Skid Row demo (by The Alliance) using TOS 1.2 or 1.4, and at multiple points when loading, possibly on every file access, the demo prompts for the disk to be inserted (despite the fact it's already in) before loading. This means that even loading the intro takes a while, and as for loading the main menu, it takes several minutes of alternating between "loading" and "insert disk" to get there.

Testing the same image in Steem, and it loads almost straight away.

[Total Eclipse]

I haven't had chance to test the Cuddly fullscreen on a real ST - I've pulled mine down from the loft and it doesn't recognise the internal floppy drive at all.

I have had chance to test the demo on the MiST on two separate TVs (15 kHz SCART) and they both have the same symptoms with the colour fading very dark within the first few scanlines.

[sebdel]

I haven't had chance to test the Cuddly fullscreen on a real ST - I've pulled mine down from the loft and it doesn't recognise the internal floppy drive at all.

I have had chance to test the demo on the MiST on two separate TVs (15 kHz SCART) and they both have the same symptoms with the colour fading very dark within the first few scanlines.

The problems you are reporting are most likely fixed on github. I don't know if slingshot plans to update the binary any time soon, you may have to build from source if you want to test more.

edit: hold on, I'm talking out of my a**, there's already a 190823 release in mist-binaries. Is this the one you're using ? It fixed the dark fullscreen symptom for me. Let me check skidrow.

[slingshot]

I repeat again: the back porch blanking is only implemented with the scandoubler (31 kHz modes). With 15kHz, you're at the mercy of your TV-set (as with the original HW). If it still dark, complain to the demo author Or make an YPbPr cable, and use it with the scandoubler.

[Total Eclipse]

I repeat again: the back porch blanking is only implemented with the scandoubler (31 kHz modes). With 15kHz, you're at the mercy of your TV-set (as with the original HW). If it still dark, complain to the demo author Or make an YPbPr cable, and use it with the scandoubler.

No problem, I'm getting a YPbPr cable made up this week, so for me the problem should simply go away. I'm going to try and get my ST working anyway, so will check it out at some point.

It's still pretty amazing that we're now at the point of discussing the occasional demo screen that doesn't work correctly. Back in 1989 the Cuddly Demo's were pulling out every trick in the book. To have them successfully implemented on the MiST is incredible!

[sebdel]

I have the same problems you have with skidrow. The loader is confused and asks for the disk randomly.

I also have problems with 0913 by live. This one is a bummer, it's just a (great) music disk, but past the intro it won't load any music.

I wanted to test more demos but they require being installed to a HD. How do you guys use your MiST? Direct SD mode? Cause I keep transferring using .st disk images between hatari and the mist and it's a little too close to the real hardware experience for me

[Higgy]

With the old ST Core there were links to an Atari forum with setup 'Satan' names HD images. They featured games and demos. They should work on this new Core.

I will have a hunt for the link.

[Estrayk]

With the old ST Core there were links to an Atari forum with setup 'Satan' names HD images. They featured games and demos. They should work on this new Core.

I will have a hunt for the link.

Yes, I'm the one who made those images, the last one for MiSTery here:
http://www.retrowiki.es/viewtopic.php?f=86&t=200035098

[RealLarry]

With the old ST Core there were links to an Atari forum with setup 'Satan' names HD images. They featured games and demos. They should work on this new Core.

I will have a hunt for the link.

Yes, I'm the one who made those images, the last one for MiSTery here:
http://www.retrowiki.es/viewtopic.php?f=86&t=200035098

Nice compilation, many thanks for that! But the disk access is terrible slow...all other game hdd's I have are running at normal speed. Any idea about that?

[Estrayk]

With the old ST Core there were links to an Atari forum with setup 'Satan' names HD images. They featured games and demos. They should work on this new Core.

I will have a hunt for the link.

Yes, I'm the one who made those images, the last one for MiSTery here:
http://www.retrowiki.es/viewtopic.php?f=86&t=200035098

Nice compilation, many thanks for that! But the disk access is terrible slow...all other game hdd's I have are running at normal speed. Any idea about that?

I have not idea, the speed is normal with my config. Try to copy only my .HD image, tos.img and mystery core to a SD without nothing more.

[Chris23235]

Yes, I'm the one who made those images, the last one for MiSTery here:
http://www.retrowiki.es/viewtopic.php?f=86&t=200035098

Nice compilation, many thanks for that! But the disk access is terrible slow...all other game hdd's I have are running at normal speed. Any idea about that?

I have not idea, the speed is normal with my config. Try to copy only my .HD image, tos.img and mystery core to a SD without nothing more.

I can confirm that the disc access is slow, I never used a HDD File with 2 GB, so maybe it's normal for such big drives (4x500 MB). You can see the slow access by loading the Chaos Engine. The sound that is played while loading hangs constantly and it seems the ST is only loading now and then small chunks of data.

[Estrayk]

my apologies, it is true, I can confirm that the disc access is slow. I´ll fix soon

[slingshot]

Loading the Skid Row demo (by The Alliance) using TOS 1.2 or 1.4, and at multiple points when loading, possibly on every file access, the demo prompts for the disk to be inserted (despite the fact it's already in) before loading. This means that even loading the intro takes a while, and as for loading the main menu, it takes several minutes of alternating between "loading" and "insert disk" to get there.

Fixed in Github. Unfortunately European demos and Electra still don't work (probably MFP issue).

[slingshot]

I wanted to test more demos but they require being installed to a HD. How do you guys use your MiST? Direct SD mode? Cause I keep transferring using .st disk images between hatari and the mist and it's a little too close to the real hardware experience for me

I'm using zip2st for small content, or atari-hd-image for bigger ones (the later can convert a whole directory to a .hd image). These are utilities supplied with Hatari.

[jamesrc]

My slog through the POV disks has turned up something!

POV 7.

The Pro Replay demo. If you try to play the various on-demand samples F1-F5, the screen will start flashing as if it's depacking something, it'll make a lot of crunchy noises, and it will crash.

Tried in STe mode with 1mb RAM and TOS 1.62, and also ST mode with 1mb RAM and TOS 1.02.

Works in Hatari.

Here it is in the process of crashing:



The other two demos on this disk work perfectly.

[slingshot]

I've opened an issue here for non-working demos:

https://github.com/gyurco/MiSTery/issues/3

Don't feel the force currently to start debugging, but still good to collect them. (Dreaming about some of you starts to use Hatari or STeem debugger to find out what the crashing demos expect). Actually I believe 3 out of 4 crash happens because something in MFP (which is only tweaked by trial and error).