668-0003-C Rabbit Semiconductor, 668-0003-C Datasheet - Page 45

• 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

3.5.6 Computed Long Calls and Jumps
The instruction to set the XPC is privileged to so that a computed long call or jump can be
made. This would be done by the following sequence.
In this case, A has the new XPC, and HL has the new PC. This code should normally be
executed in the root segment so as not to pull the memory out from under the JP (HL)
instruction.
A call to a computed address can be performed by the following code.
Chapter 3 Details on Rabbit Microprocessor Features
LD xpc,a
JP (HL)
; A=xpc, IY=address
;
;
; The DOCALL routine
DOCALL:
LD A,newxpc
LD IY,newaddress
LCALL DOCALL
LD xpc,a
JP (IY)
; SET xpc
; go to the routine
; call utility routine in the root
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