668-0011 Rabbit Semiconductor, 668-0011 Datasheet - Page 289

• Manufacturer Part Number: 668-0011
• Description: IC MPU RABIT3000A 55.5MHZ128LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 668-0011

• Rohs Status: RoHS non-compliant
• Processor Type: Rabbit 3000 8-Bit
• Speed: 55.5MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Features: -
• Other names: 316-1043

B.1.9.2 New Block Copy Opcodes
The LDxR family of block move opcodes has been expanded. In the Rabbit 3000 proces-
sor, block copy operations could only be done between memory addresses, or from mem-
ory to an I/O address. In addition, the destination I/O address would increment (or
decrement if using LDDR) after each byte, making the block copy opcodes effectively
useless for repeated reads or writes to a peripheral (for example, a device on the external
I/P bus).
Six new block copy opcodes were added to the Rabbit 3000 revision. These opcodes can
copy from an I/O address as well as to one, and either the source or destination address can
remain fixed instead of changing after each byte. The new opcodes are described in
Table B-7.
Appendix B Rabbit 3000 Revisions
Table B-7. Rabbit 3000 Revision Block Copy Opcode Effects
Opcode
LDDSR
LDISR
LSDDR
LSIDR
LDDR
LDIR
LSDR
LSIR
Address
Change
Source
none
none
+
+
+
-
-
-
Destination
Address
Change
none
none
+
+
+
-
-
-
destination
destination
destination
destination
IOI/IOE
Affects
source
source
source
source
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