================================================ DSEG AT 20H IOBYTE_1: DS 1 BSEG AT 20H 10HPMOTOR: DBIT 1 ;;<========ERROR======== SOL_LOAD: DBIT 1 SOL_REV: DBIT 1 END ================================================ MCS-51 Family Macro Assembler ASEM-51 V1.3 asemtest.asm(12): illegal constant 1 error detected ================================================ DSEG AT 20H IOBYTE_1: DS 1 BSEG AT 20H MOTOR10Hp: DBIT 1 ;;<========NO ERROR===== SOL_LOAD: DBIT 1 SOL_REV: DBIT 1 END ================================================= MCS-51 Family Macro Assembler ASEM-51 V1.3 no errors ================================================= Hex Listing of successful compiled file using asem.exe :00000001FF