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SX Embedded Controller Instruction

PushFSR (DW $04A)

Description: Push the contents of W onto the "FSRstack"
Operation: FSRstack[FSP++] = W
Flags affected: ?
Registers affected: FSRstack
Sources referenced: W
Cycles: 1
Opcode: $04A
Details: Secret Instructions Page
Microchip PIC syntax: n/a

The FSRstack is only two levels deep and is used by both the interrupt and the debug system. If you don't set a breakpoint or happen to break into debug while in an ISR, you can use one level without concern. If you don't use interrupts or debug, you can use both levels.

To use this instruction, first define the following macro.

PushFSR macro
 DW $04A

file: /Techref/scenix/inst/pushFSR.htm, 1KB, , updated: 2004/12/13 18:41, local time: 2023/10/1 19:05,

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