Maxim Integrated MAX31782 - Manual (Page 191)

  MaximIntegrated  20-8
MAX31782 User’s Guide
Revision 0; 8/11
{L/S}JUMPsrc Unconditional{Long/Short}Jump
Description: Performs an unconditional jump as determined by the src specifier . The JUMP instruction uses an
8-bit immediate src to perform a relative jump (IP +127/-128 words) . The JUMP instruction uses
a 16-bit immediate src to perform an absolute JUMP to the specified 16-bit address . The PFX[0]
register is used to supply the high byte of a 16-bit immediate address for the absolute JUMP .
Using the optional ‘L’ prefix (i .e ., LJUMP) results in an absolute long jump and use of the PFX[0]
register . Using the optional ‘S’ prefix (i .e ., SJUMP) attempts to generate a relative short jump, but
will be flagged by the assembler if the destination is out of range . Specifying an internal register
src always produces an absolute JUMP to a 16-bit address, thus the ‘L’ and ‘S’ prefixes should not
be used .
StatusFlags: None
Operation: IP ← src Absolute JUMP
IP ← IP + src Relative JUMP
Encoding: 15 0
f000 1100 ssss ssss
Example(s): JUMP label1 ; relative jump to label1 (must be within range
; IP +127/-128 words)
JUMP label1 ; absolute jump to label1= 0400h
; MOVE PFX[0], #04h
; JUMP #00h
JUMP DP[0] ; absolute jump to addr16 DP[0]
LJUMP label1 ; label=0120h and is relative to this instruction
; absolute jump is forced by use of ‘L’ prefix
; MOVE PFX[0], #01h
; JUMP #20h
SJUMP label1 ; relative offset for label1 calculated and used
; if label1 is not relative, assembler will generate an error
SJUMP #10h relative offset of #10h is used directly by the JUMP