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این هم توضیحات آی سی میکرو۵۱

Description:
If the indicated bit is a one, jump to the address indicated; otherwise proceed with the next instruction. The branch destination is computed by adding the signed relative-displacement in the third instruction byte to the PC, after incrementing the PC to the first byte of the next instruction. The bit tested is not modified. No flags are affected.

Example:
The data present at input port 1 is 11001010B. The accumulator holds 56 (01010110B). The instruction sequence
JB P1.2,LABEL1
JB ACC.2,LABEL2
will cause program execution to branch to the instruction at label LABEL2.

Operation:
JB
(PC) = (PC) + 3
if (bit) = 1 then
(PC) = (PC) + rel

Encoding:
0 0 1 0 0 0 0 0 + bit address + rel. address

Bytes: 3

Cycles: 2

Microcontroller Instruction Set  (79 pages, 308 kbytes)

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In this IC-Databook Software you will find pin assignments, connection layouts, function tables and the most important specifications available for the 40x.. and the 74x.. IC series.

In the actual software version are already the data of more than 230 different IC's. You can easily add additionally IC's add or edit existing IC's and exchange them with other users.

The software runs with Windows 95, 98, ME, NT, 2000 and XP

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