Put the sprites hardware back the graphics in SCREEN 2

By gasparrini

Champion (329)

gasparrini's picture

05-07-2014, 11:49

Hello Guys,

I ask you if is possible put the sprites hardware back the graphics in SCREEN 2.
Because I know that technically it would also be possible to do this thing,
I knew that this feature is very difficult, but some people
we have succeeded!

Maybe using and manipulating the registers of the VDP, or using a
particular routine in assembly.

I wait your good new....
Best Regards
Hannibal
AG.

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By Grauw

Ascended (10699)

Grauw's picture

05-07-2014, 12:18

It’s not possible to put the sprites behind the graphics in any screen mode. They’re always in front. If some games achieve such an effect, they do it by manually manipulating the sprite pattern pixels, or overlapping them with another sprite, or using the 5th sprite limitation, or they do not use hardware sprites.

The Graphics9000 does have such a feature though.

By DanySoft

Champion (452)

DanySoft's picture

06-07-2014, 21:18

That's right, Grauw!
Gasparini, if you've read the manual of MSX-BASIC?
The hardware sprites are ALWAYS in the first level!

He'd already used the VRAM and not sprites, like in the game Batman for MSX1 .....
In some cases, in the foreground, was the sprite, the sprite was behind what was the player 1UP!

In this case, it was probably on a screen with 5 COPY mode without sprites.

Bye bye
DAnySoft

By DaikuMaryuGaiking

Expert (126)

DaikuMaryuGaiking's picture

14-10-2014, 17:00

The only home computer 8 bit that put the sprite rear charset is C64.
It has just the memory location for that.