EasyManua.ls Logo

Intel 8253 - Page 470

Intel 8253
773 pages
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
XA User Guide 6-70 4/17/98
BNE Branch if not equal
Syntax: BNE rel8
Operation: (PC) <-- (PC) + 2
if (Z) = 0 then
(PC) <-- (PC + rel8*2)
(PC.0) <-- 0
Description: The branch is taken if the last arithmetic/logic instruction (or other instruction that
updates the Z flag) had a non-zero result (the Z flag contains a 0). The branch range is +254 bytes
to -256 bytes, with the limitation that the target address is word aligned in code memory.
Note: Refer to section 6.3 for details of branch range
Size: Bit
Flags Updated: none
Bytes: 2
Clocks: 6t/3nt
Encoding:
1 1 1 1 0 0 1 0
rel8

Table of Contents