Layer 2 Shadow RAM bank Register: Difference between revisions

Revision as of 13:10, 11 November 2019

Number	TBRegisterNumber::$13
Readable	TBRegisterReadable::Yes
Writable	TBRegisterWritable::Yes
Short Description	[[ShortDesc::Sets the bank number where the Layer 2 shadow screen begins.]]

Bits 6-0 store the number of the "SRAM page" (ie, bank) used for the shadow Layer 2 screen. The default is 11. Because the layer 2 screen is 48kiB, it actually occupies 3 banks, and the number set here is the first; so by default, it occupies banks 11-13. (bit 7 is reserved, use 0)

For shadow bank paging see Layer_2

@@ Line 6: / Line 6: @@
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-Bits 5-0 store the number of the "SRAM page" (ie, [[Memory map|bank]]) used for the shadow Layer 2 screen. The default is 11. Because the layer 2 screen is 48k, it actually occupies 3 banks, and the number set here is the first; so by default, it occupies banks 11-13.
+Bits 6-0 store the number of the "SRAM page" (ie, [[Memory map|bank]]) used for the shadow Layer 2 screen. The default is 11. Because the layer 2 screen is 48kiB, it actually occupies 3 banks, and the number set here is the first; so by default, it occupies banks 11-13. (bit 7 is reserved, use 0)
 For shadow bank paging see [[Layer_2]]