Intel 8XC196MH, 8XC196MD, 8XC196MC manual Table A-4. PSW Flag Setting Symbols, Symbol Description

Models: 8XC196MD 8XC196MH 8XC196MC

1 579
Download 579 pages 24.12 Kb
Page 394
Image 394

INSTRUCTION SET REFERENCE

Table A-3 shows the effect of the PSW flags or a specified condition on conditional jump instruc- tions. Table A-4 defines the symbols used in Table A-6 to show the effect of each instruction on the PSW flags.

Table A-3. Effect of PSW Flags or Specified Conditions on Conditional Jump Instructions

Instruction

Jumps to Destination if

Continues if

 

 

 

DJNZ

decremented byte 0

decremented byte = 0

DJNZW

decremented word 0

decremented word = 0

JBC

specified register bit = 0

specified register bit = 1

JBS

specified register bit = 1

specified register bit = 0

JNC

C = 0

C = 1

JNH

C = 0 OR Z = 1

C = 1 AND Z = 0

JC

C = 1

C = 0

JH

C = 1 AND Z = 0

C = 0 OR Z = 1

JGE

N = 0

N = 1

JGT

N = 0 AND Z = 0

N = 1 OR Z = 1

JLT

N = 1

N = 0

JLE

N = 1 OR Z = 1

N = 0 AND Z = 0

JNST

ST = 0

ST = 1

JST

ST = 1

ST = 0

JNV

V = 0

V = 1

JV

V = 1

V = 0

JNVT

VT = 0

VT = 1 (clears VT)

JVT

VT = 1 (clears VT)

VT = 0

JNE

Z = 0

Z = 1

JE

Z = 1

Z = 0

.

 

Table A-4. PSW Flag Setting Symbols

Symbol

Description

The instruction sets or clears the flag, as appropriate.

The instruction does not modify the flag.

The instruction may clear the flag, if it is appropriate, but cannot set it.

The instruction may set the flag, if it is appropriate, but cannot clear it.

1

The instruction sets the flag.

0

The instruction clears the flag.

?The instruction leaves the flag in an indeterminate state.

A-5

Page 394
Image 394
Intel 8XC196MH Table A-4. PSW Flag Setting Symbols, Instruction Jumps to Destination if Continues if, Symbol Description