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Program Status Word: Difference between revisions

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The '''Program Status Word''' is an 8-bit register on the [[SPC700]] that stores the value of status flags.  They are typically listed in this order: NVPBHIZC.  More verbosely:
The '''Program Status Word''' is an 8-bit register on the [[SPC700]] that stores the values of status flags.  They are typically listed in this order: NVPBHIZC.  More verbosely:


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Revision as of 04:12, 16 July 2023

The Program Status Word is an 8-bit register on the SPC700 that stores the values of status flags. They are typically listed in this order: NVPBHIZC. More verbosely:

Flag Name Bit Position
Negative Flag bit 7
overflow Flag bit 6
direct page flag bit 5
Break Flag bit 4
Half-carry flag bit 3
Interrupt Enable Flag bit 2
Zero Flag bit 1
Carry flag bit 0