Hi there I've added some extra 64Kb of RAM on my KC167CR development board. This memory sould be \CS2 selectable at a starting address of 0x50000. I got problems in selecting that RAM chip. The \CS2 is not going low is it should. In C166 the memory settings are:
RAM1 (0x0000 to 0x10000) and RAM2 (0x50000 to 0x60000)
%DEFINE (ADDRESS1) (0000H); Set CS1# Start Address %DEFINE (RANGE1) (64K) . . %DEFINE (ADDRESS2) (50000H); Set CS2# Start Address %DEFINE (RANGE2) (64K)