16f877.lkr

This is the famous CD-ROM interfacing using 8051. It also contains schematic.

// Sample linker command file for 16F877
// $Id: 16f877.lkr,v 1.4 2002/01/29 22:10:01 sealep Exp $

LIBPATH  .

CODEPAGE   NAME=vectors  START=0x0      END=0x4      PROTECTED
CODEPAGE   NAME=page0    START=0x5      END=0x7FF
CODEPAGE   NAME=page1    START=0x800    END=0xFFF
CODEPAGE   NAME=page2    START=0x1000   END=0x17FF
CODEPAGE   NAME=page3    START=0x1800   END=0x1FFF
CODEPAGE   NAME=.idlocs  START=0x2000   END=0x2003   PROTECTED
CODEPAGE   NAME=.config  START=0x2007   END=0x2007   PROTECTED
CODEPAGE   NAME=eedata   START=0x2100   END=0x21FF   PROTECTED

DATABANK   NAME=sfr0     START=0x0      END=0x1F     PROTECTED
DATABANK   NAME=sfr1     START=0x80     END=0x9F     PROTECTED
DATABANK   NAME=sfr2     START=0x100    END=0x10F    PROTECTED
DATABANK   NAME=sfr3     START=0x180    END=0x18F    PROTECTED

DATABANK   NAME=gpr0     START=0x20     END=0x6F
DATABANK   NAME=gpr1     START=0xA0     END=0xEF
DATABANK   NAME=gpr2     START=0x110    END=0x16F
DATABANK   NAME=gpr3     START=0x190    END=0x1EF

SHAREBANK  NAME=gprnobnk START=0x70     END=0x7F
SHAREBANK  NAME=gprnobnk START=0xF0     END=0xFF
SHAREBANK  NAME=gprnobnk START=0x170    END=0x17F
SHAREBANK  NAME=gprnobnk START=0x1F0    END=0x1FF

SECTION    NAME=_vector  ROM=vectors    // Reset and interrupt vectors
SECTION    NAME=_rom1    ROM=page0      // ROM code space - page0
SECTION    NAME=_rom2    ROM=page1      // ROM code space - page1
SECTION    NAME=_rom3    ROM=page2      // ROM code space - page2
SECTION    NAME=_rom4    ROM=page3      // ROM code space - page3
SECTION    NAME=_idloc   ROM=.idlocs    // ID locations
SECTION    NAME=_config  ROM=.config    // Configuration bits location
SECTION    NAME=_eeprom  ROM=eedata     // Data EEPROM
SECTION    NAME=_ram1	  RAM=gpr0		// Global variables data
SECTION    NAME=_ram2	  RAM=gpr1		// Global variables data
SECTION    NAME=_ram3	  RAM=gpr2		// Global variables data
SECTION    NAME=_ram4	  RAM=gpr3		// Global variables data