24bit XDATA pointer in Dallas DS5240

How can I access the XDATA memory block after 64Kbypes in Dallas DS5240 environment? I now use 24bit contiguous mode to compile the program and I want to access a memory address in xdata 0x200000.......
24bit XDATA pointer in Dallas DS5240

How can I access the XDATA memory block after 64Kbypes in Dallas DS5240 environment? I now use 24bit contiguous mode to compile the program and I want to access a memory address in xdata 0x200000.......
DS5240 with MON390

we need to put a DS5240 to work with the mon390. how can i configure the DS5240 internal registers?
DS5240 with MON390

we need to put a DS5240 to work with the mon390. how can i configure the DS5240 internal registers?
Dallas DS5240 vs C51 v6.11

I now use Keil C51 v6.11 to develop the firmware that run on Dallas DS5240. However, it sounds quite strange. Sometimes the compiled code can run correctly. However, it become incorrect when I have just...