Hi, I am facing a problem while reading and writing to External Flash memory. In the hardware we are using, C167-CS microcontroller is interfaced to external FLASH (M29F200). These are the interface connections: /CS0 of the microcontroller is connected to /OE of the FLASH /CS3 of the microcontroller is connected to /WR of the FLASH The chip enable(/E) of the FLASH is permanently grounded. In the software, BUSCON0 has been configured for read. BUSCON3 has been configured for write. ADDRSEL3 has been mapped to 256KB starting from address 0x80000. I am able to write to the FLASH but unable to read. What has to be done to read and write into the FLASH? Please help me out. Thanks & Regards, Rajendra