get rgb values

Par TheKid

Paladin (884)

Portrait de TheKid

20-07-2017, 18:22

Hi there,

I was wondering how to get the rgb values of a color in msx basic ?
If you for instance want to change a color, you can use color=(5,1,2,3).
But what command do I need to get the rgb values of color 5 ?

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Par Lord_Zett

Paladin (807)

Portrait de Lord_Zett

20-07-2017, 19:42

i thought you need to vpeek the adres.

Par NYYRIKKI

Enlighted (5483)

Portrait de NYYRIKKI

20-07-2017, 19:51

Yes, the VRAM addresses are explained in here

How ever if the software is not nice and does not update these values in VRAM then the information is permanently lost inside VDP and you can't figure it out anymore... This is pretty typical in games and demos... Naturally in emulators you can use the debugger interface to figure them out anyway.

Par TheKid

Paladin (884)

Portrait de TheKid

20-07-2017, 22:28

okay, thanx guys, I will try this approach.

Par Meits

Scribe (5748)

Portrait de Meits

21-07-2017, 01:54

openMSX can show it:
Advanced -> Toys... -> show palette

Proved its use to me quite a few times already Smile

Par TheKid

Paladin (884)

Portrait de TheKid

21-07-2017, 15:32

@Meits: Nice find Smile

Par Meits

Scribe (5748)

Portrait de Meits

21-07-2017, 17:34

the fun is that it's always visible and thus it shows fades as well. Very nice Smile

Par Manuel

Ascended (16134)

Portrait de Manuel

22-07-2017, 00:06

TheKid wrote:

@Meits: Nice find Smile

Hah, easy to find, it's even documented ;-) See http://openmsx.org/manual/commands.html#other