I am reading the start_va.a66. I found some statements like following don't specifies segment value. Then what is the default segment value for the [R8+]? MOV R5,#0 MOV R2,[R8+] ; Count JMPR cc_Z,EndClear MOV R3,R2 MOV R4,[R8+] JBC R2.14,ClearNear ClearBit: MOV R3,R4 Thanks.