Little help, please

[ParanoidLittleMan]

I'm working on hi-color video playback together with Cyg and Douglas Little - so it includes hi-color picture displaying on ST, STE machines too. There is one issue what results in small errors in displayings in some cases, caused by different timings in video circuits on diverse machines and emulators. Furthermore, it may change by warming of machine.

 

Errors look like:

 

SW for testing: http://atari.8bitchip.info/TIMINGC.ZIP

 

Mostly testing on STE, Mega STE is interesting. Please, run TTP executable, and enter 1A and look carefully what is on screen errors are not big - bad color dots, mostly at same hor. pos, so like stripped vertical bars. Exit with space, then check other s -1B, 2A, 2B .

If can, do check with cold machine, and later with warmed up - but turn off for short between tests - it is important, because timing scheme sets only by power-up. Then write here which ones looked good, which bad - and when.

 

My STE, when is cold shows well A or B in 50%-50% cases. When is warmed shows always A correct. Emulators whow B correct (Steem and Hatari). My Mega STE shows correct A or B even when warmed up. I don't expect situation that none will be shown correct, but who knows - then would like to see screenshot of it - but it may be problem if no capture card. Warmed up - it means here after working couple minutes - intern warm of chips is relevant, not that computer gets hot :-)

 

As presence for people contributing: you will be able to playback something like this on your machine:

 

http://atari.8bitchip.info/DebrisUS12fps.avi

 

It was made with Mega STE and UltraSatan. STE is good too, of course - must run on 8MHz CPU clock. I need to fix some things yet in playback SW, mostly related to diverse filesystems and drivers possible. As already said earlier: this will work only if disk and adapter are enough fast, so min transfer rate is 1100KB/sec. And you need to defragment partition on which large AV file will be copied.

SW and example AV file in couple days ...

[+DarkLord]

Still amazed by what's being done lately with video on the STe line.

 

Wonderful stuff - Big pat on the back for all involved.

[ParanoidLittleMan]

Here is video, good for UltraSatan playback, something interesting for Atari fans, from 25 years ago:

 

http://atari.8bitchip.info/HCPL158.ZIP

 

22MB. Player SW and instructions included. Works on ST too, without sound. In case of problems test speed with:

 

http://atari.8bitchip.info/ahpt.html

 

Video of playback: http://atari.8bitchip.info/AscUS.avi

 

When SD card is slow: http://atari.8bitchip.info/Slowc.avi

 

With classic hard disk: http://atari.8bitchip.info/ClHard.avi

 

Same video with overscan (not for US) : http://atari.8bitchip.info/Asc.avi

 

If someone with IDE adapter and CF card want video playback, please let me know - write couple words about your specs.

Edited December 12, 2012 by ParanoidLittleMan

[ParanoidLittleMan]

Updated player and some technical infos added:

 

http://atari.8bitchip.info/movpst.php

[+DarkLord]

Always interesting reading, thanks!

 

I remember VCD. Usually took 2 CDs to make a whole movie. When I first got into Mandrake

Linux about 1999 or so, the video player I used would only support VCD. I've still got a stack of

them lying around somewhere.

[ParanoidLittleMan]

Not much help received here, but why to surprise me

 

Anyway:

Here is regular Steem 3.2 with only changed to TimingA:

 

http://atari.8bitchip.info/SteemTimingA.zip

 

Just copy it to your Steem DIR and use to see difference. If compare hi-color screens of hard disk adaptations, latest ones, you will see that errors are same as on YouTube videos of games. By me, it should be default Steem timing, since most of STE machines are in TimingA in most of cases.