668-0003-C Rabbit Semiconductor, 668-0003-C Datasheet - Page 185

• Manufacturer Part Number: 668-0003-C
• Description: IC CPU RABBIT2000 30MHZ 100PQFP
• Manufacturer: Rabbit Semiconductor

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

18.5 16-bit Load and Store 20-bit Address
Note that the LDP instructions wrap around on a 64K page boundary. Since the LDP instruc-
tion operates on two-byte values, the second byte will wrap around and be written at the
start of the page if you try to read or write across a page boundary. Thus, if you fetch or
store at address 0xn,0xFFFF, you will get the bytes located at 0xn,0xFFFF and
0xn,0x0000 instead of 0xn,0xFFFFand 0x(n+1),0x0000 as you might expect. Therefore,
do not use LDP at any physical address ending in 0xFFFF.
18.6 Register to Register Moves
Chapter 18 Rabbit Instructions
Instruction
LDP (HL),HL
LDP (IX),HL
LDP (IY),HL
LDP HL,(HL)
LDP HL,(IX)
LDP HL,(IY)
LDP (mn),HL
LDP (mn),IX
LDP (mn),IY
LDP HL,(mn)
LDP IX,(mn)
LDP IY,(mn)
Instruction
LD r,g
LD A,EIR
LD A,IIR
LD A,XPC
LD EIR,A
LD IIR,A
LD XPC,A
LD HL,IX
LD HL,IY
LD IX,HL
LD IY,HL
LD SP,HL
LD SP,IX
LD SP,IY
LD dd',BC
LD dd',DE
clk
12
12
12
10
10
10
15
15
15
13
13
13
clk
2
4
4
4
4
4
4
4
4
4
4
2
4
4
4
4
A
A
r
fr
fr
r
r
r
I S Z V C
I S Z V C
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
* * - -
* * - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
Operation
(HL) = L; (HL+1) = H.
(Adr[19:16] = A[3:0])
(IX) = L; (IX+1) = H.
(Adr[19:16] = A[3:0])
(IY) = L; (IY+1) = H.
(Adr[19:16] = A[3:0])
L = (HL); H = (HL+1).
(Adr[19:16] = A[3:0])
L = (IX); H = (IX+1).
(Adr[19:16] = A[3:0])
L = (IY); H = (IY+1).
(Adr[19:16] = A[3:0])
(mn) = L; (mn+1) = H.
(Adr[19:16] = A[3:0])
(mn) = IXL; (mn+1) = IXH.
(Adr[19:16] = A[3:0])
(mn) = IYL; (mn+1) = IYH.
(Adr[19:16] = A[3:0])
L = (mn); H = (mn+1).
(Adr[19:16] = A[3:0])
IXL = (mn); IXH = (mn+1).
(Adr[19:16] = A[3:0])
IYL = (mn); IYH = (mn+1).
(Adr[19:16] = A[3:0])
Operation
r = g; r,g any of B,
C, D, E, H, L, A
A = EIR
A = IIR
A = MMU
EIR = A
IIR = A
XPC = A
HL = IX
HL = IY
IX = HL
IY = HL
SP = HL
SP = IX
SP = IY
dd' = BC (dd': 00-BC',
01-DE', 10-HL')
dd' = DE (dd': 00-BC',
01-DE', 10-HL')
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