Instruction Set Reference
Examples:
IF AV JUMP(PC,0x00A4)(LA);
CALL init (DB);
JUMP (PC,2) (DB,CI);
Opcode: (with direct branch)
47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24
0 0 0
0 0 1 1 0
B A
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ADDR
Opcode: (with PC-relative branch)
47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24
0 0 0
0 0 1 1 1
B A
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RELADDR
COND specifies the condition to test. If no condition is specified in the
instruction, COND is the TRUE condition, and the instruction is always
executed.
B selects the branch type, jump or call. J determines whether the branch is
delayed or non-delayed. The ADDR field specifies a 24-bit program
memory address. RELADDR is a 24-bit, twos-complement value that is
added to the current PC value to generate the branch address. The A bit
activates loop abort. CI activates clear interrupt. (For calls, A and CI are
ignored.)
www.BDTIC.com/ADI
Program Flow Control
direct jump|call
{init is a program label}
{clear current int. for reuse}
COND
COND
A
J
CI
J
CI
A – 29
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