Explay T285 memory map.

T285 MAP MEMORY MT6260
00000000-0FFFFFFF-PSRAM MIRROR
10000000-10FFFFFF 16MB SPI ROM
11000000-1FFFFFFF-SPI ROM MIRROR
20000000-6FFFFFFF-???
70000000-7FFFFFFF-0000
80000000-8FFFFFFF-???00
90000000-9FFFFFFF-SPI ROM MIRROR
A0000000-AFFFFFFF-SYSTEM
B0000000-EFFFFFFF-??? =(20000000-6FFFFFFF)
F0000000-F07FFFFF-PSRAM 8MB
F0800000-FFF00000-??? =
(20000000-6FFFFFFF) (B0000000-EFFFFFFF)
FFF00000-FFFFFFFF 1MB USB BOOT ???