# i51 Assembler code ``` code:0000006B code:0000006B ; =============== S U B R O U T I N E ======================================= code:0000006B code:0000006B ; External interrupt 6 code:0000006B code:0000006B ; public IEX6 code:0000006B IEX6: code:0000006B mov R7, A code:0000006C addc A, RAM_0 code:0000006E addc A, RESERVED00FF ; RESERVED code:00000070 addc A, @R0 code:00000071 addc A, @R1 code:00000072 addc A, R0 code:00000073 addc A, R1 code:00000074 addc A, R2 code:00000075 addc A, R3 code:00000076 addc A, R4 code:00000077 addc A, R5 code:00000078 addc A, R6 code:00000079 addc A, R7 code:0000007A ajmp IEX2+2 ; External interrupt 2 code:0000007A ; End of function IEX6 code:0000007A code:0000007A ; --------------------------------------------------------------------------- code:0000007C .byte 0x54 ; T code:0000007D .byte 0 code:0000007E .word 0x54FF code:00000080 .byte 0x55, 0, 0x55 code:00000083 code:00000083 ; =============== S U B R O U T I N E ======================================= code:00000083 code:00000083 ; Serial channel 1 code:00000083 code:00000083 ; public RI1_TI1 code:00000083 RI1_TI1: code:00000083 mov R7, A ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hex-rays.com/8.4/user-guide/disassembler/disassembly-gallery/i51.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.