PopSTAT (DW $04D) |
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| Description: | Pop the contents of W from the "STATstack" |
| Operation: | W = STATstack[SSP--] |
| Flags affected: | ? |
| Registers affected: | W |
| Sources referenced: | STATstack |
| Cycles: | 1 |
| Opcode: | $04D |
| Details: | Secret Instructions Page |
| Microchip PIC syntax: | n/a |
| Notes: | |
The STATstack 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.
PopSTAT macro DW $04D endm
| file: /Techref/scenix/inst/popSTAT.htm, 1KB, , updated: 2004/12/13 16:58, local time: 2024/11/21 22:18,
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Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232! |
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