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TCLR1 (SPC700): Difference between revisions
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|6 cycles | |6 cycles | ||
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!colspan="8"|Flags | !colspan="8"|Flags Affected | ||
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|[[Negative Flag|N]] | |||
|[[Overflow Flag|V]] | |||
|[[Direct Page Flag|P]] | |||
|[[Break Flag|B]] | |||
|[[Half-Carry Flag|H]] | |||
|[[Interrupt Enable Flag|I]] | |||
|[[Zero Flag|Z]] | |||
|[[Carry Flag|C]] | |||
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|N | |N | ||
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'''TCLR1''' is an [[SPC700]] instruction that tests and clears bits | '''TCLR1''' is an [[SPC700]] instruction that tests and clears memory bits using the [[accumulator]]. For every set bit in the accumulator, TCLR1 clears the corresponding memory bit. | ||
==== Syntax ==== | |||
<pre> | |||
TCLR1 !abs | |||
</pre> | |||
Where abs is any address in the whole 64K [[bank]] of [[ARAM]]. | |||
=== See Also === | === See Also === | ||
| Line 43: | Line 49: | ||
=== External Links === | === External Links === | ||
# Official Nintendo documentation on TCLR1: Table C-18 in [https://archive.org/details/SNESDevManual/book1/page/n234 Appendix C-9 of Book I] | |||
# subparagraph 8.2.3.2 of [https://archive.org/details/SNESDevManual/book1/page/n186 page 3-8-8], lbid. | |||
# anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L606 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:SPC700]] | [[Category:SPC700]] | ||
[[Category:Bit Operation Commands]] | [[Category:Bit Operation Commands]] | ||
[[Category:Three-byte Instructions]] | |||
Latest revision as of 17:40, 11 August 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Absolute | 4E | 3 bytes | 6 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| N | . | . | . | . | . | Z | . |
TCLR1 is an SPC700 instruction that tests and clears memory bits using the accumulator. For every set bit in the accumulator, TCLR1 clears the corresponding memory bit.
Syntax
TCLR1 !abs
Where abs is any address in the whole 64K bank of ARAM.
See Also
External Links
- Official Nintendo documentation on TCLR1: Table C-18 in Appendix C-9 of Book I
- subparagraph 8.2.3.2 of page 3-8-8, lbid.
- anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L606