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chatGPZ
Registered: Dec 2001
Posts: 11386 |
Please run these Test-Programs....
yay,
in order to get some definitive answers and to confirm VICE is working correctly (or not) it would be great if someone who has a video-capture card could run these test programs and provide screenshots from the real thing:
https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/VIC..
interesting are results from "new" and "old" VICII (they will produce slightly different result). this is very hard to spot on a CRT (we are talking about a one pixel difference) so if you have a way to capture the real thing please do it :)
another no less interesting case is this test program:
https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/VIC..
this one is kindof strange, since apparently it will produce different output depending on the temperature of the VICII. if you look at the two reference images... https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/VIC.. and https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/VIC.. eg notice the number of "1" in the fourth character row. this difference is apparently NOT there when the "new" VICII is "cold". it apparently appears on _some_ "new" VICII after a rather long warmup (an hour or more), and it apparently even then also randomly appears and disappears on power cycles. so for this one we need ppl with "new" C64s who can run the program, check the result, powercycle, repeat (a few times) - and do the same after a longer warmup period. the readme in that directory shows the interesting parts of the output.
thanks for your help! |
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tlr
Registered: Sep 2003
Posts: 1790 |
I think you should do the modesplit one too if you do videomode-*.
Modesplit probably hasn't got all of the transitions of the videomode ones but the most important difference is that it repeats the splits for each D016 shift. Also each split is repeated for a char height making tiny changes way easier to spot.
I can add more transitions to it if you provide some suspect ones based on other findings. |
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Oswald
Registered: Apr 2002
Posts: 5094 |
what is this modesplit, any interesting properties ? :) I thought it just changes mode in any cycle ? |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
please, if you want to know what the testprograms do, just look at their sourcecode. |
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Oswald
Registered: Apr 2002
Posts: 5094 |
I want to know what interesting properties modesplit has. |
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tlr
Registered: Sep 2003
Posts: 1790 |
Quote: what is this modesplit, any interesting properties ? :) I thought it just changes mode in any cycle ?
The interesting properties are in the machine. The program just try to provoke it in a visible way. ;)
Seriously though, a lot of subtle differences got exposed through modesplit so I recommend it. |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
i'd like to extend the above request....
1) please also capture https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/crt.. - that will help a lot with actually "reading" the supplied captures and compare them with emulator screenshots
2) as tlr already mentioned, please also capture https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/VIC..
thanks!
i'll be slowly work through provided results (there is no need to actually make screenshots btw... just capture a video of how you run all those tests after each other, i'll grab the screens myself) and try to create proper pixel perfect reference pictures for our testbench. |
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Copyfault
Registered: Dec 2001
Posts: 478 |
Quoting OswaldI want to know what interesting properties modesplit has.
Guess it's just what you think: triggering a change of the hires/multicol-mode within the display area. There seems to be a different behaviour between the VIC chip revisions, the chip conditions (and maybe more) so this is of particular interest.
@Groepaz: feel free to correct and/or add infos. |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
yes, all those tests do is switching between various modes. the point is that the switches do NOT take effect on character boundaries, but are delayed by one or two (or three) pixels - depending on the VIC revision, and apparently also on temperature. the more you look at it, the less straightforward it gets.
thus: please provide some captures - its the only way to make this accruate. |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
Anyone? Lemming? ZeroX? Xiny? please... :) |
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Xiny6581
Registered: Feb 2004
Posts: 73 |
Okay I will give it a go now!
Let's hope my capture-card is with me.
:) |
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