memory layout of the gsm part in the xda

memory range description type
00000000-00800000 2 mirrors of a 00400000 size block 4 M rom
00800000-01000000 16 mirrors of a 00080000 size block 512 k ram
01000000-01800000 00800000 size block filled with { 0xA1, 0xD2 }
01800000-02000000 00800000 size block filled with { 0xD2, 0xD2 }
02000000-02800000 00800000 size block filled with { 0xA1, 0xD2 }
02800000-03000000 00800000 size block filled with { 0xD2, 0xD2 }
03000000-03800000 32 mirrors of a 00040000 size block 256k ram
ffd00000-ffe00000 256 mirrors of a 4K size block cpu internal ram
ffe00000-fff00000 1M size block filled with {0x02, 0x00} ??
fffe0000-00000000 128k size block io space??

about the gsm rom

misc notes abote the gsm rom