Unconditional BRAnch
NAME
BRA -- Unconditional branch
SYNOPSIS
BRA <label>
Size = (Byte, Word)
Size = (Byte, Word, Long) (68020+)
FUNCTION
Program execution continues at location (PC) + offset.
Offset is the relative gap between PC value at BRA ((PC) + 2)
instruction execution time and mentioned label.
FORMAT
-----------------------------------------------------------------
|15 |14 |13 |12 |11 |10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|-------------------------------|
| 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 8 BITS OFFSET |
|---------------------------------------------------------------|
| 16 BITS OFFSET, IF 8 BITS OFFSET = $00 |
|---------------------------------------------------------------|
| 32 BITS OFFSET, IF 8 BITS OFFSET = $FF |
-----------------------------------------------------------------
RESULT
None.
SEE ALSO
JMP Bcc
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Patch level: 36
& witbrock@cs.cmu.edu