MEMORY PAGING IN LOW 16kB

[Black_Cat]

MB02+ interface

MB02 + controller is not needed for exUSSR computers. For exUSSR computers easier to use a management system based on the basis of their own standards.

---------- Post added at 20:57 ---------- Previous post was at 20:21 ----------

Exist any russian interface with external memory mapped on rom area ?

Here's an example of a promising management system for exUSSR computers:

r/wCPU0 MANAGETMENT:

|D0#1FFD|D3#EFF7
|_0 _____|_0 - rdROM
|_0 _____|_1 - rdROM & wrRAM
|_1 _____|_0 - r/wRAM
|_1 _____|_1 - rdRAM

Adressing ROM in CPU0:

A14"ROM - D4 #7FFD
A15"ROM - D3 #1FFD
A16"ROM - D2 #1FFD
A17"ROM - D6 #1FFD
A18"ROM - D5 #1FFD

Adressing RAM in CPU0:
#9FFD CPU0(#0000-#3FFF) WINDOW PORT

D0 - A14'RAM
..
D7 - A21'RAM