參數(shù)資料
型號(hào): μPD70F3003
廠商: NEC Corp.
英文描述: 16/32 Bit Single Chip Microcontrollers(16/32 位單片微控制器)
中文描述: 16/32位單片機(jī)微控制器(16/32位單片微控制器)
文件頁數(shù): 52/141頁
文件大?。?/td> 374K
代理商: ΜPD70F3003
CHAPTER 5 INSTRUCTION
40
Bcond
Branch on Condition Code
Instruction format
Bcond
disp9
Operation
if conditions are satisfied
then PC
PC + sign-extend (disp9)
Format
Format III
Op code
15
0
ddddd1011dddcccc
dddddddd is the higher 8 bits of disp9.
Flag
CY
OV
S
Z
SAT
Instruction
Bcond
Branch on Condition Code with 9-bit displacement
Explanation
Tests a condition flag specified by the instruction. Branches if a specified condition is satisfied;
otherwise, executes the next instruction. The branch destination PC holds the sum of the
current PC value and 9-bit displacement, which is 8-bit immediate shifted 1 bit and sign-
extended to word length.
Remark
Bit 0 of the 9-bit displacement is masked to 0. The current PC value used for calculation is
the address of the first byte of this instruction. If the displacement value is 0, therefore, the
branch destination is this instruction itself.
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