VIPA CPU 21 Series - Jump instructions

Chapter 12 Instruction list Manual VIPA CPU 21x
Command
Operand Parameter Status word Function
Length
in
BR CC1 CC0 OV OS OR STA RLO /FC
words
: Instruction depends on
: Instruction influences
12-20 HB103E - Rev. 05/45
Instructions directly
affecting the RLO
Status word The following instructions have a directly effect
on the RLO.
CLR
BR CC1 CC0 OV OS OR STA RLO /FC
Set RLO to "0". 1
- - - - -----
- - - - - 0 0 0 0
SET
BR CC1 CC0 OV OS OR STA RLO /FC
Set RLO to "1". 1
- - - - -----
- - - - - 0 1 1 0
NOT
BR CC1 CC0 OV OS OR STA RLO /FC
Negate RLO. 1
- - - - - Y - Y -
- - - - - - 1 Y -
SAVE
BR CC1 CC0 OV OS OR STA RLO /FC
Save RLO into BR-Bit. 1
- - - - - - - Y -
Y - - - -----
Jump instructions
Jump instructions
Status word Jump, depending on conditions.
8-Bit operands have a jump width of
(-128...+127), 16-Bit operands of (-32768...-
129) or (+128...+32767)
JU LABEL
BR CC1 CC0 OV OS OR STA RLO /FC
Jump unconditionally. 1/2
- - - - -----
- - - - -----
JC LABEL
BR CC1 CC0 OV OS OR STA RLO /FC
Jump if RLO="1". 1/2
JCN LABEL - - - - - - - Y - Jump if RLO="0". 2
- - - - - 0 1 1 0
JCB LABEL
BR CC1 CC0 OV OS OR STA RLO /FC
Jump if RLO="1". 2
- - - - - - - Y - Save the RLO in the BR-Bit
JNB LABEL Y - - - - 0 1 1 0 Jump if RLO="0". 2
Save the RLO in the BR-Bit
JBI LABEL
BR CC1 CC0 OV OS OR STA RLO /FC
Jump if BR="1". 2
JNBI LABEL Y - - - -----Jump if BR="0". 2
- - - - - 0 1 - 0
JO LABEL
BR CC1 CC0 OV OS OR STA RLO /FC
Jump on stored overflow (OV="1"). 1/2
- - - Y -----
- - - - -----
JOS LABEL
BR CC1 CC0 OV OS OR STA RLO /FC
Jump on stored overflow (OS="1"). 2
- - - - Y - - - -
- - - - 0 - - - -