Memory ②

Memory-2 is a region of the 5A22's address space. Memory-2 is a total of 6 megabytes (exactly 6,291,456 bytes) in size, spread across:

• the upper half (8000h - FFFFh) of banks 80h - BFh, which is exactly 2,097,152 bytes (2 megabytes spread across 64 banks), and
• all of banks C0h - FFh, which is exactly 4,194,304 bytes (4 megabytes spread across 64 banks)

Thus, when labeled on a memory map, Memory 2 forms a concave region; see Figure 2-21-1 of the official Super Nintendo development manual.

See Also

• Memory ①

References

• https://problemkaputt.de/fullsnes.htm#snesmemorycontrol
• bottom of page 2-21-2, the left-hand side of the figure: https://archive.org/details/SNESDevManual/book1/page/n93
• https://archive.org/details/SNESDevManual/book1/page/n143