668-0003-C Rabbit Semiconductor, 668-0003-C Datasheet - Page 30
668-0003-C
Manufacturer Part Number
668-0003-C
Description
IC CPU RABBIT2000 30MHZ 100PQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0003.pdf
(228 pages)
Specifications of 668-0003-C
Rohs Status
RoHS non-compliant
Processor Type
Rabbit 2000 8-Bit
Speed
30MHz
Voltage
2.7V, 3V, 3.3V, 5V
Mounting Type
Surface Mount
Package / Case
100-MQFP, 100-PQFP
Features
-
Other names
316-1004
668-0003
668-0003
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Manufacturer
Quantity
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Part Number:
668-0003-C
Manufacturer:
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10 000
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3.3.3 Load or Store Data Using an Index Register
An index register is a 16-bit register, usually IX, IY, SP or HL, that is used for the address
of a byte or word to be fetched from or stored to memory. Sometimes an 8-bit offset is
added to the address either as a signed or unsigned number. The 8-bit offset is a byte in the
instruction word. BC and DE can serve as index registers only for the special cases below.
Other 8-bit loads and stores are the following.
The following are 16-bit indexed loads and stores. None of these instructions exists on the
Z180 or Z80. The only source for a store is
24
LD A,(BC)
LD A',(BC)
LD (BC),A
LD A,(DE)
LD A',(DE)
LD (DE),A
LD r,(HL)
LD g,(HL)
LD (HL),r
** LD (HL),g
LD r,(IX+d)
LD g,(IX+d)
LD (IX+d),r
LD (IY+d),r
LD HL,(SP+d)
LD (SP+d),HL
LD HL,(HL+d)
LD HL',(HL+d)
LD (HL+d),HL
LD (IX+d),HL
LD HL,(IX+d)
LD HL',(IX+d)
LD (IY+d),HL
LD HL,(IY+d)
LD HL',(IY+d)
; r is any of 7 registers A, B, C, D, E, H, L
; same but alternate register destination
; r is any of the 7 registers above
; or an immediate data byte
;**** not a legal instruction!
; r is any of 7 registers, d is -128 to +127 offset
; same but alternate destination
; r is any of 7 registers or an immediate data byte
; IX or IY can have offset d
; d is an offset from 0 to 255.
; 16-bits are fetched to HL or HL'
; corresponding store
; d is an offset from -128 to +127,
; uses original HL value for addressing
; l=(HL+d), h=(HL+d+1)
; store HL at address pointed to
; by IX plus -128 to +127 offset
; store HL at address pointed to
; by IY plus -128 to +127 offset
HL
. The only destination for a load is
Rabbit 2000 Microprocessor User’s Manual
HL
or
HL'
.
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