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OCR: Processor State Save Area - B.7 M M T L @_ 00COMO S T T T a a 0 S S T T Location(s) Size Type Meaning 0x000001A8 LONG RAM SCC Port A External Status Change Vector 0x000001AC LONG RAM Unused 0x000001 BO LONG RAM SCC Port A Receive Character Available Vector 0x00000184 LONG RAM Unused 0x000001 88 LONG RAM SCC Port A Special Receive Condition Vector 0x000001 BC LONG RAM Unused 0x000001CO - N/A RAM Undefined 0x0000037F Processor State Save Area 0x00000380 LONG RAM proc_lives: If, after a system failure, the operating system is able to save the processor state in the following variables, this value will be 0x12345678. 0x00000384 LONG RAM proc_d'regs: The contents of registers DO through D7 are stored here. 0x000003A4 LONG RAM proc_aregs: The contents of registers AO through A7 are stored here. 0x00000304 LONG RAM Proc_oc: The first byte of this longword indicates the exception number that occurred. 0x000003C8 LONG RAM Proc_usp: The user stack pointer (USP) is saved here. 0x000003CC- WORD RAM Proc_stk: The top 16 WORDs of the supervisor 0x000003EA stack are saved here. 0x000003EC - N/A RAM Unassigned 0x000003FF System Vectors 0x00000400 LONG RAM etv_timer. System Timer Handoff VVector (see GEMDOS) 0x00000404 LONG RAM ety_critc: Critical Error Handoff Vector (see GEMDOS) 0x00000408 LONG RAM ety_term: Process Termination Handler (see GEMDOS) 0x0000040C - LONG RAM Reserved for future ve ctors. 0x0000041C System Variables 0x00000420 LONG RAM memvalid': If this variable is equal to $752019F3 and the value at me mval 2 ($43A) is also correct, then the last coldstart was successful and mementir ($424) is valid. As of TOS 1.02 memval3 ($51A) must also be correct. 0x00000424 WORD RAM remontr. Bits 11-8 of this WORD contains the memory controller state.