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S1C63000 CORE CPU MANUAL EPSON 113
CHAPTER 4: INSTRUCTION SET
OR %F,imm4 Logical OR of immediate data imm4 and F reg. 1 cycle
Function: F ← F ∨ imm4
Performs a logical OR operation of the 4-bit immediate data imm4 and the content of the F
(flag) register, and stores the result in the r register. It is possible to set any flag.
Code:
Mnemonic MSB LSB
OR %F,imm4 100001001i3i2i1i01090H–109FH
Flags: EICZ
↑↑↑↑
Mode: Src: Immediate data
Dst: Register direct
Extended addressing: Invalid
OR %r,[%ir] Logical OR of location [ir reg.] and r reg. 1 cycle
Function: r ← r ∨ [ir]
Performs a logical OR operation of the content of the data memory addressed by the ir register
(X or Y) and the content of the r register (A or B), and stores the result in the r register.
Code:
Mnemonic MSB LSB
OR %A,[%X] 11011011000001B60H
OR %A,[%Y] 11011011000101B62H
OR %B,[%X] 11011011001001B64H
OR %B,[%Y] 11011011001101B66H
Flags: EICZ
↓ ––↕
Mode: Src: Register indirect
Dst: Register direct
Extended addressing: Valid
Extended LDB %EXT,imm8
operation: OR %r,[%X] r ← r ∨ [00imm8] (00imm8 = 0000H + 00H to FFH)
LDB %EXT,imm8
OR %r,[%Y] r ← r ∨ [FFimm8] (FFimm8 = FF00H + 00H to FFH)