s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 115

• Manufacturer Part Number: s3c4510b
• Description: 16/32-bit Risc Microcontroller
• Manufacturer: Samsung Semiconductor, Inc.

S3C4510B
FORMAT 5: HI-REGISTER OPERATIONS/BRANCH EXCHANGE
OPERATION
There are four sets of instructions in this group. The first three allow ADD, CMP and MOV operations to be
performed between Lo and Hi registers, or a pair of Hi registers. The fourth, BX, allows a Branch to be performed
which may also be used to switch processor state. The THUMB assembler syntax is shown in Table 3-12.
The action of H1 = 0, H2 = 0 for Op = 00 (ADD), Op = 01 (CMP) and Op = 10 (MOV) is undefined, and should
not be used.
15
0
14
0
13
0
In this group only CMP (Op = 01) sets the CPSR condition codes.
12
0
11
0
10
0
[2:0] Destination Register
[5:3] Source Register
[6] Hi Operand Flag 2
[7] Hi Operand Flag 1
[9:8] Opcode
Figure 3-34. Format 5
9
Op
8
NOTE
H1
7
H2
6
5
Rs/Hs
3
2
Rd/Hd
INSTRUCTION SET
0
3-73