Layer 2 Active RAM Bank Register: Difference between revisions

Revision as of 00:42, 30 August 2017

Number	TBRegisterNumber::$12
Readable	TBRegisterReadable::Yes
Writable	TBRegisterWritable::Yes
Short Description	[[ShortDesc::Sets the bank number where Layer 2 video memory begins.]]

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

@@ Line 3: / Line 3: @@
 |Readable=Yes
 |Writable=Yes
-|ShortDesc=Sets the "SRAM page"(?) used by Layer 2 for video memory.
+|ShortDesc=Sets the [[Memory map|bank]] number where Layer 2 video memory begins.
 }}
-Bits 5-0 store the number of the "SRAM page" used for the standard Layer 2 screen. The default is 8.
+Bits 5-0 store the number of the "SRAM page" (ie, [[Memory map|bank]]) 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).