Layer 2 RAM Page Register

From SpecNext official Wiki
Revision as of 23:05, 29 August 2017 by wiki>Hyphz
Jump to: navigation, search
Number $12
Readable Yes
Writable Yes
Short Description Sets the "SRAM page"(?) used by Layer 2 for video memory.


Bits 5-0 store the number of the "SRAM page" used for the standard Layer 2 screen. The default is 8.

It is not clear what an "SRAM page" actually is. It does not correspond to a "bank" in standard memory management because Layer 2 is too big to fit into a single bank (it is $BFFF big while a regular bank is $3FFF).