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Signature Byte: Difference between revisions
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A '''Signature Byte''' is the second byte of certain two-byte 65x instructions. | A '''Signature Byte''' is the second byte of certain two-byte 65x instructions: | ||
* [[BRK]] | |||
* [[COP]] | |||
* [[WDM]] | |||
None of these instructions are considered to use [[immediate addressing]] even though the signature byte immediately follows the opcode. | |||
=== Reference === | |||
* 7.22 BRK Instruction on page 53 of 65c816 datasheet: https://www.westerndesigncenter.com/wdc/documentation/w65c816s.pdf | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Official Jargon]] | |||
Latest revision as of 18:29, 29 July 2024
A Signature Byte is the second byte of certain two-byte 65x instructions:
None of these instructions are considered to use immediate addressing even though the signature byte immediately follows the opcode.
Reference
- 7.22 BRK Instruction on page 53 of 65c816 datasheet: https://www.westerndesigncenter.com/wdc/documentation/w65c816s.pdf