Contents - Table Of Contents
- Table Of Contents
- Table Of Contents
- Table Of Contents
- Table Of Contents
- Table Of Contents
- Document Conventions
- Processor Registers
- OpCode Descriptions
- ADC HL,ss
- ADD A,(HL)
- ADD HL,ss
- ADD IX,xx
- ADD SP,d
- ALTD
- AND (HL)
- AND HL,DE
- BIT b,(HL)
- CP (IX+d)
- DEC (HL)
- EX (SP),HL
- EX (SP),IX
- EX AF,AF
- EX DE,HL
- IDET
- INC (HL)
- IPSET
- IPRES
- LCALL x,mn
- LD (BC),A
- LD (HL+d),HL
- LD (IX+d),r
- LD (IY+d),HL
- LD (mn),A
- LD (SP+n),IX
- LD A,(mn)
- LD A,EIR
- LD A,XPC
- LD dd,(mn)
- LD dd',BC
- LD dd,mn
- LD EIR,A
- LD HL,(mn)
- LD HL,(SP+n)
- LD HL,IX
- LD IX,(mn)
- LD IX,(SP+n)
- LD IX,mn
- LD IY,(mn)
- LD IY,(SP+n)
- LD r,(HL)
- LD SP,IY
- LD XPC,A
- LDDR
- LDISR
- LDP (HL),HL
- LDP (mn),HL
- LDP HL,(HL)
- LDP HL,(mn)
- LJP x,mn
- LRET
- LSDDR
- OR (IX+d)
- OR HL,DE
- OR IX,DE
- RDMODE
- RES b,(HL)
- RETI
- RL (IX+d)
- RLC (HL)
- RLCA
- RR (IX+d)
- RRC (HL)
- RRCA
- SBC (IX+d)
- SBC HL,ss
- SET b,(HL)
- SETUSR
- SLA (HL)
- SRA (HL)
- SRL (HL)
- SUB (HL)
- SURES
- SYSCALL
- XOR (HL)
- Opcode Map
- Quick Reference Table
- Notice to Users
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38 Rabbit 2000/3000 MicroprocessorDescriptionDecrements the byte whose address is:• in HL, or• the data in IX plus a displacement value d, or• the data in IY plus a displacement value d.DEC (HL)DEC (IX+d)DEC (IY+d)Opcode Instruction Clocks Operation35 DEC (HL) 8 (2,1,2,3) (HL) = (HL) - 1DD 35 d DEC (IX+D) 12 (2,2,2,1,2,3) (IX + d) = (IX + d) - 1FD 35 d DEC (IY+D) 12 (2,2,2,1,2,3) (IY + d) = (IY + d) - 1Flags ALTD I/OS Z L/V C F R SP S D• • V - • • •
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