Layer 2 RAM Page Register

Number	$12
Readable	Yes
Writable	Yes
Short Description	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. 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 8-10.

For shadow bank paging see Layer_2

Note that this register uses the 16kb bank method, so if you set Nextreg $12,$C if you need to read the contents via 8kb banks you would need to multiply x 2