I am working on a video chip with an embedded 8051 controller. The architecture is as follows.. A 16 MB Flash Memory is connected to Video Chip which is controlled by 8051. This 16MB is divided into 4 banks each of size 4 MB and each bank has 256 pages (8 bit SFR value) and each page has 16 k. Totally 24 bit is needed to address the flash memory. To access this memory our chip has been designed in such a way that, 1. First 14 address line of 8051 is mapped to first 14 [0 to 13] address line of Flash. 2. Eight bit value in a particular SFR is used to map the 16 to 21 address line of flash. There were four such SFRs for this purpose,each for each bank. 3.15th and 16th address line of 8051 is used for selecting any one of this four, and also they are used for 23rd and 24th line of FLASH With this memory model configuration, how can I set the Linker option in Keil. Can any body help me out.