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Direct Page Flag: Difference between revisions
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The '''direct page flag''' exists on the [[ | The '''direct page flag''' (P) exists on the [[S-SMP]], as bit 5 of the [[Program Status Word]]. | ||
When clear, the direct page is the zeropage (located at 0000h to 00FFh). | When clear, the [[direct page]] is the zeropage (located at 0000h to 00FFh). | ||
When set, the direct page is page one (located at 0100h to 01FFh). | When set, the direct page is page one (located at 0100h to 01FFh). | ||
The direct page flag is set by [[SETP]] and cleared by [[CLRP]]. | The direct page flag is set by [[SETP]] and cleared by [[CLRP]]. | ||
=== Reference === | |||
* [https://archive.org/details/SNESDevManual/book1/page/n227 Appendix C-2 of Book I] of the official Super Nintendo development manual | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Flags]] | [[Category:Flags]] | ||
[[Category:SPC700]] | [[Category:SPC700]] | ||
Latest revision as of 11:31, 5 December 2023
The direct page flag (P) exists on the S-SMP, as bit 5 of the Program Status Word.
When clear, the direct page is the zeropage (located at 0000h to 00FFh).
When set, the direct page is page one (located at 0100h to 01FFh).
The direct page flag is set by SETP and cleared by CLRP.
Reference
- Appendix C-2 of Book I of the official Super Nintendo development manual