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Program Status Word: Difference between revisions

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(Registers category)
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[[Category:ASM]]
[[Category:ASM]]
[[Category:SPC700]]
[[Category:SPC700]]
[[Category:Registers]]
[[Category:Flags]]
[[Category:Flags]]

Revision as of 01:14, 17 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