I am using random writes.
also, the memory isn't really divided in blocks.
it's just that I think of it as in blocks.
so in my program, I have 8 seperate pointers.
each array has en LSB-pointer and an MSB-pointer.

the pointers for array1 never go over 07FFh
so actually, my controller sees it as a memory with four separate arrays, but the memory itself is just one big block.

every time I write or read something to it/from it, I send the adress too!

i.e. if I want to store 4 bytes in the beginning of array1:
byte1 = 02h
byte2 = 3Ch
byte3 = 0Dh
byte4 = F4h
I write this:
1) 00 00 02
2) 00 01 3C
3) 00 02 0D
4) 00 03 F4

so every byte is accompanied by two adressbytes. It works perfectly, as long as I don't go over adress 0FFFh

Bart