Layer 2 RAM Shadow Page Register
From SpecNext official Wiki
| Number | $13 |
|---|---|
| Readable | Yes |
| Writable | Yes |
| Short Description | 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
Valid values are 0 to 109 (with 2MiB SRAM memory extension, 0 to 45 with default 1MiB memory).