partial vertical scroll for msx2

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Van Metalion

Paragon (1451)

afbeelding van Metalion

22-11-2020, 11:37

Manel46 wrote:

Why this?
You can indicate the width you want to move, and the rest stay put.
Clarify that for the copy commands, the vram is considered a single unit of 256x256x4 pixels, in screen5. Pages don't count.

I'm not sure I understand your question ... Or if it is indeed a question ?

Van Manel46

Hero (629)

afbeelding van Manel46

22-11-2020, 13:39

Metalion wrote:

Yep, did that in a game a long time ago. You scroll the full screen but use a VDP command to move in the opposite direction the part you want to stay still.

Why do you do what you say to keep part of the screen still?
With the vertical copy command, you define the width you want to move.

Van Manel46

Hero (629)

afbeelding van Manel46

22-11-2020, 14:51

Surely what you mean is that with the copy command you keep a screen area still, which is moved with scroll hw R # 23.
I have problems with English. Smile

Van Metalion

Paragon (1451)

afbeelding van Metalion

22-11-2020, 18:26

Manel46 wrote:

Surely what you mean is that with the copy command you keep a screen area still, which is moved with scroll hw R # 23.

Yes, that's what I meant.

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