PSP_INT -- Parallel Slave Port Read/Write
Uses PIR1,PSPIF, PIE1,PSPIE Registers and Control Bits.
DT's Interrupts MUST be used with PicBasic Pro and MPASM.
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The following block of instructions will establish the interrupt used and the PBP label (your ISR) to jump to once interrupt occurs. Remember; all PBP labels or variables used inside ASM code blocks must be preceded by the underscore,( _GetData). All instruction to the interrupt processor should be in ASM and preceded by the @ symbol and to the far left column of the editor if not included in other ASM code blocks.
Example:
@ INT_DISABLE PST_INT
ASM
INT_LIST macro ;IntSource Label, Type, ResetFlag? INT_Handler PST_INT _GetData PBP Yes endm INT_CREAT ;Creates the interrupt processor INT_ENABLE PST_INT ;enables PST interrupts
ENDASM
INT_ENABLE PST_INT – enable PST interrupt.
INT_DISABLE PST_INT – disable PST interrupt.
INT_CLEAR PST_INT – clear flags
INT_RETURN ---------- To restore and return to the program where interrupt was made.
<< EE_INT | 14-bit sources | SSP_INT >>