Dear all, My project is using P89c51rd2 added an external ram(8k). Accroding to the data sheet the memory model of P89c51rd2 is that: 0-7f lower 128 byte 80-ff Higner 128 byte 100-3fff ERAM ----------------------------- Extrnal 8K ram from 0000~1FFF. ------------------------------ if i connected the external ram to P89c51rd2 What is the starting address of the External RAM? Will the Eram and external ram address overall together if i want to use the XBYTE[] to acess the external ram address How can i do it?
Erik, Thanks for your quick response. Your advice is very much appreciated. Kind regards, Simon