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DEBUG: BRK #/D when used in breakpoint mode. (brk #$10 'enable breakpoint on 'brk' (stops after)) e.g. Conditional execution if_z brk #BRK_code BRK gets detected and acted upon when in the pipeline, just prior to the final 2-clock execution stage. This means that the breakpoint is unconditional, though writing the 8-bit BRK value IS conditional. and You can write a cog address to $1FE and the next debug interrupt will go there, bypassing the $1F8 ROM routine?
SKIPF Instruction: Be aware when reading the "skip_call_depth" counter that the value returned includes stack CALL/RET's made within the ISR. also Only these immediate-address branches/LOC are allowed in SKIPF/EXECF/XBYTE sequences where the instruction after may be skipped: JMP #\address CALL #\address CALLA #\address CALLB #\address CALLD PA/PB/PTRA/PTRB,#\address LOC PA/PB/PTRA/PTRB,#\address
TRGINTx instructions: These instructions will trigger an interrupt even if the interrupt is configured as "OFF".