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VDP Question

Posted: Sun Sep 29, 2013 8:29 am
by walker7
What happens if you set any of the following VDP registers to $00:

Scroll A Address (reg. $02)
Window Address (reg. $03)
Scroll B Address (reg. $04)
Sprite Table Address (reg. $05)
H-Scroll Table Address (reg. $0D)

Are these elements of VRAM disabled, or are they still treated like normal?

Posted: Sun Sep 29, 2013 8:43 am
by TmEE co.(TM)
All of them will still work at the addresses the $00 write will make them look at. In case of $00 all of them will look at somewhere in the beginning of VRAM.