Difference between revisions of "PM Opc ROLC"
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m (* Spelling corrections, no biggy. ;)) |
(→ROLC = Rotate Left through Carry) |
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| (2 intermediate revisions by one other user not shown) | |||
| Line 14: | Line 14: | ||
|12 | |12 | ||
|- | |- | ||
| − | |CE 92 | + | |CE 92 nn |
|ROLC [N+#nn] | |ROLC [N+#nn] | ||
|20 | |20 | ||
| Line 54: | Line 54: | ||
; A = 0x04 | ; A = 0x04 | ||
; F = (Carry=0) | ; F = (Carry=0) | ||
| − | ROLC A | + | '''ROLC A''' |
; A = 0x08 | ; A = 0x08 | ||
; F = (Zero=0):(Carry=0):(Sign=0) | ; F = (Zero=0):(Carry=0):(Sign=0) | ||
| Line 60: | Line 60: | ||
; B = 0x45 | ; B = 0x45 | ||
; F = (Carry=1) | ; F = (Carry=1) | ||
| − | ROLC B | + | '''ROLC B''' |
; B = 0x8B | ; B = 0x8B | ||
; F = (Zero=0):(Carry=0):(Sign=1) | ; F = (Zero=0):(Carry=0):(Sign=1) | ||
| Line 66: | Line 66: | ||
; B = 0x84 | ; B = 0x84 | ||
; F = (Carry=0) | ; F = (Carry=0) | ||
| − | ROLC B | + | '''ROLC B''' |
; B = 0x08 | ; B = 0x08 | ||
; F = (Zero=0):(Carry=1):(Sign=0) | ; F = (Zero=0):(Carry=1):(Sign=0) | ||
| Line 72: | Line 72: | ||
; [HL] = 0x80 | ; [HL] = 0x80 | ||
; F = (Carry=0) | ; F = (Carry=0) | ||
| − | ROLC [HL] | + | '''ROLC [HL]''' |
; [HL] = 0x00 | ; [HL] = 0x00 | ||
; F = (Zero=1):(Carry=1):(Sign=0) | ; F = (Zero=1):(Carry=1):(Sign=0) | ||
| Line 78: | Line 78: | ||
; [HL] = 0x80 | ; [HL] = 0x80 | ||
; F = (Carry=1) | ; F = (Carry=1) | ||
| − | ROLC [HL] | + | '''ROLC [HL]''' |
; [HL] = 0x01 | ; [HL] = 0x01 | ||
; F = (Zero=0):(Carry=1):(Sign=0) | ; F = (Zero=0):(Carry=1):(Sign=0) | ||
[[PM_InstructionList|'''« Back to Instruction set''']] | [[PM_InstructionList|'''« Back to Instruction set''']] | ||
Latest revision as of 12:52, 27 March 2010
ROLC = Rotate Left through Carry
| Hex | Mnemonic | Cycles |
|---|---|---|
| CE 90 | ROLC A | 12 |
| CE 91 | ROLC B | 12 |
| CE 92 nn | ROLC [N+#nn] | 20 |
| CE 93 | ROLC [HL] | 16 |
Execute
A = Register A B = Register B [N+#nn] = Memory: (I shl 16) or (N shl 8) or #nn [HL] = Memory: (I shl 16) or HL
; ROLC Ds ; ; Ds = Source/Destination Ds = (Ds SHL 1) OR Carry
Description
"8-Bits Destination" bits are rotated left by 1 through Carry.
Conditions
Zero: Set when result is 0
Carry: Set when old bit 7 is 1
Sign: Set when bit 7 of the result is 1
Overflow remain unchanged
Examples
; A = 0x04 ; F = (Carry=0) ROLC A ; A = 0x08 ; F = (Zero=0):(Carry=0):(Sign=0)
; B = 0x45 ; F = (Carry=1) ROLC B ; B = 0x8B ; F = (Zero=0):(Carry=0):(Sign=1)
; B = 0x84 ; F = (Carry=0) ROLC B ; B = 0x08 ; F = (Zero=0):(Carry=1):(Sign=0)
; [HL] = 0x80 ; F = (Carry=0) ROLC [HL] ; [HL] = 0x00 ; F = (Zero=1):(Carry=1):(Sign=0)
; [HL] = 0x80 ; F = (Carry=1) ROLC [HL] ; [HL] = 0x01 ; F = (Zero=0):(Carry=1):(Sign=0)
