Search found 124 matches

by Petari
Sat Dec 30, 2017 8:21 pm
Forum: DISPLAYS & CONVERTERS
Topic: NEC MultiSync EA190M
Replies: 2
Views: 326

Re: NEC MultiSync EA190M

... The only downside I see is that the image is a little bit out of focus, it would have been nice if the monitor had some sort of sharpness setting, but I cannot find one. Of course, there is no focus setting on LCD monitors. To get sharp picture from analog input with low res, you need to set wi...
by Petari
Sat Dec 30, 2017 5:32 pm
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: Test/Demo SW for 50-60 Hz framerate conversion
Replies: 4
Views: 141

Re: Test/Demo SW for 50-60 Hz framerate conversion

I made 2 short videos with help of Steem SSE and Fraps to demonstrate how conversion 50-60 fps looks with some games. One is not so good scroller, other is good scroller. Basically, I don't see any judder effect in it, but it is present for sure, and can see that scrolling is not at same rate always...
by Petari
Sat Dec 30, 2017 5:26 pm
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: HDD drivers. How does it work?
Replies: 14
Views: 335

Re: HDD drivers. How does it work?

HDDRIVER who ? :lol: Good work :dualthumbup:
by Petari
Sat Dec 30, 2017 1:29 pm
Forum: STF REMAKE PROJECT
Topic: Video output considerations
Replies: 23
Views: 427

Re: Video output considerations

I did SW for testing 50-60 Hz conversion concept: https://www.exxoshost.co.uk/forum/viewtopic.php?f=39&t=488 Some other methods seem not offering better quality. Only thing what could be better is complex motion analysis and new frame generating SW, what exists for some years. Myself did some conver...
by Petari
Sat Dec 30, 2017 1:04 pm
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: Test/Demo SW for 50-60 Hz framerate conversion
Replies: 4
Views: 141

Test/Demo SW for 50-60 Hz framerate conversion

As we know, today is problematic to find monitor, newer monitor, what can properly display Atari ST(E) color signal, especially PAL (50 Hz) video mode. LCD monitors usually need min 60 Hz refresh rate. And even when there is PAL input on many newer LCD TVs, or some monitors too, problems may appear,...
by Petari
Fri Dec 29, 2017 6:48 pm
Forum: EVERYTHING ELSE
Topic: VHDL CACHE ?
Replies: 21
Views: 387

Re: VHDL CACHE ?

Well, some people talked about doing tests about that cache reset (invalidate) - when blitter activates. So far nothing. Similar can be done for disk DMA too. It seems that I will need to do it myself ... Fill cache by reading some area multiple times, then blit there, or load from disk there some o...
by Petari
Fri Dec 29, 2017 12:08 pm
Forum: EVERYTHING ELSE
Topic: VHDL CACHE ?
Replies: 21
Views: 387

Re: VHDL CACHE ?

It is called tag RAM - what stores which locations are cached - therefore you see 2 SRAM chips in Mega STE. Considering blitter: (and DMA too) - there is simply no sense to cache them. Goal is not to have faster writes in cache, because that will probably be not accessed immediately, so chances that...
by Petari
Fri Dec 29, 2017 7:15 am
Forum: STF REMAKE PROJECT
Topic: Video output considerations
Replies: 23
Views: 427

Re: Video output considerations

For now, this is only thinking about concept of solution. Probably, all it is discovered by some other people already. But it's not bad to do it self. All it is not so complicated. I'm in process of doing special test SW, where can see how it will look in practice. Without Atari, only emulator in Wi...
by Petari
Fri Dec 29, 2017 7:06 am
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: Problem with autoboot.
Replies: 8
Views: 175

Re: Problem with autoboot.

... It's not clear to me where it went wrong. Do you have any idea what was not correct? As always, I want to learn. ... Use some Hex editor/viewer to see that changes are not done at proper addresses, and not even proper values written. Additionally, what is at offset $3FA00 is not IDE code, but c...
by Petari
Fri Dec 29, 2017 6:44 am
Forum: EVERYTHING ELSE
Topic: VHDL CACHE ?
Replies: 21
Views: 387

Re: VHDL CACHE ?

I think that here is some confusion about auto modifying code. In case of 68030 there is problem of modifying code, which is only some 2-20 bytes ahead. But that is already in CPU's pipeline, so will not execute properly. I called it pipeline bug - and I found it in at least 10 games - like Infestat...