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| SVI-728 color feature.
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NYYRIKKI
msx master
Berichten: 1525 |  Geplaatst: 24 Maart 2005, 15:36 |
Hi,
In SVI-728 there was one special feature, that has been bothering me many years now. There was some pretty simple (software) trick to switch green color from color pallette to brown! IIRC it was precisely color 12. I remember that this was really cool as other MSX computers didn't have a brown color. 
Does anyone have idea, what the command(s) was??? How does this work in hardware vice? Could it be possible that it was done by using VDP under recommended voltage or some other similar kind of trick?
Ps. I really mean 728 not 738 and I've seen it with my own eyes!
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hap
msx addict
Berichten: 504 | Geplaatst: 24 Maart 2005, 16:09 |
I remember it too, something like:
screen2:fori=0to95:line(0,i*2)-(255,i*2),12:line(0,i*2+1)-(255,i*2+1),6:next:a$=input$(1)
.. and then stand away 3 yards from your screen 
This probably works better on an old tv. Other colour combinations are also possible. |
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NYYRIKKI
msx master
Berichten: 1525 | Geplaatst: 24 Maart 2005, 16:47 |
I know that this sounds stupid, but it is definately there... I remember I had just got a new cool game: BMX-simulator from local store and using this trick, you could change the sand color to quite right! |
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ccfg
msx friend
Berichten: 4 | Geplaatst: 24 Maart 2005, 16:58 |
Bit 0 of VDP R#0 (external video input) selects the better looking colors on SVI-728.
In BASIC:
VDP(0)=VDP(0)OR1
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NYYRIKKI
msx master
Berichten: 1525 | Geplaatst: 24 Maart 2005, 17:21 |
Ah, yes! That must be it! Thank you!!! I was already starting to doubt working of my own head!
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gargamel
msx user
Berichten: 42 | Geplaatst: 24 Maart 2005, 19:25 |
That was really cool :-)
Btw. please let me know if you stumble across the original disks.
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NYYRIKKI
msx master
Berichten: 1525 | Geplaatst: 24 Maart 2005, 20:24 |
??? BMX-Simulator was a cassette game and it was actually not that cool...
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