# PIC Assembler code ``` CODE:0004 CODE:0004 ; =============== S U B R O U T I N E ======================================= CODE:0004 CODE:0004 ; Interrupt Vector CODE:0004 CODE:0004 ; public ISR CODE:0004 ISR: CODE:0004 movlp 0 CODE:0005 btfss BANK0:INTCON, T0IF CODE:0006 b loc_CODE_8 CODE:0007 b loc_CODE_9 CODE:0008 ; --------------------------------------------------------------------------- CODE:0008 CODE:0008 loc_CODE_8: ; CODE XREF: ISR+2↑j CODE:0008 b loc_CODE_1A CODE:0009 ; --------------------------------------------------------------------------- CODE:0009 CODE:0009 loc_CODE_9: ; CODE XREF: ISR+3↑j CODE:0009 movlb 0 CODE:000A movfw byte_DATA_24 CODE:000B xorlw 3 CODE:000C bnz loc_CODE_F CODE:000E b loc_CODE_10 CODE:000F ; --------------------------------------------------------------------------- CODE:000F CODE:000F loc_CODE_F: ; CODE XREF: ISR+8↑j CODE:000F b loc_CODE_14 CODE:0010 ; --------------------------------------------------------------------------- CODE:0010 CODE:0010 loc_CODE_10: ; CODE XREF: ISR+A↑j CODE:0010 movlp 5 CODE:0011 ; assume pclath = 5 CODE:0011 call sub_CODE_516 CODE:0012 movlp 0 CODE:0013 ; assume pclath = 0 CODE:0013 b loc_CODE_14 ``` --- # 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/8.5/user-guide/disassembler/disassembly-gallery/pic.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.