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OR1 (SPC700)

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Revision as of 19:55, 23 July 2023 by Xetheria (talk | contribs) (13-bit absolute addressing)
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Basic Info
Addressing Mode Opcode Length Speed
13-bit Absolute 0A 3 bytes 5 cycles
13-bit Absolute 2A 3 bytes 5 cycles
Flags Clobbered
N V P B H I Z C
. . . . . . .

OR1 is an SPC700 instruction that performs a logical or between a memory bit and the carry flag, then stores the disjunction in the carry flag. The low 13 bits of the operand specify an absolute address. The high 3 bits of the operand specify which bit at that absolute address.

See Also

External Links