A-75
INSTRUCTION SET REFERENCE
Binary Mode
Source Mode
Not Taken
Taken
Not Taken
Taken
Bytes:
3
3
2
2
States:
2
5
1
4
Hex Code in:
Binary Mode = [A5][Encoding]
Source Mode = [Encoding]
Operation:
JSGE
(PC)
←
(PC) + 2
IF [(N) = (OV)]
THEN (PC)
←
(PC) + rel
JSL rel
Function:
Jump if less than (signed)
Description:
If the N flag and the OV flag have different values, branch to the address specified;
otherwise proceed with the next instruction. The branch destination is computed by adding
the signed relative displacement in the second instruction byte to the PC, after incrementing
the PC twice.
Flags:
Example:
The instruction
JSL LABEL1
causes program execution to continue at LABEL1 if the N flag and the OV flag have different
values.
Binary Mode
Source Mode
Not Taken
Taken
Not Taken
Taken
Bytes:
3
3
2
2
States:
2
5
1
4
Hex Code in:
Binary Mode = [A5][Encoding]
Source Mode = [Encoding]
Operation:
JSL
(PC)
←
(PC) + 2
IF (N)
≠
(OV)
THEN (PC)
←
(PC) + rel
[Encoding]
0 1 0 1
1 0 0 0
rel. addr
CY
AC
OV
N
Z
—
—
!
!
!
[Encoding]
0 1 0 0
1 0 0 0
rel. addr
Summary of Contents for 8XC251SA
Page 2: ......
Page 3: ...May 1996 8XC251SA 8XC251SB 8XC251SP 8XC251SQ Embedded Microcontroller User s Manual...
Page 18: ......
Page 19: ...1 Guide to This Manual...
Page 20: ......
Page 30: ......
Page 31: ...2 Architectural Overview...
Page 32: ......
Page 41: ...3 Address Spaces...
Page 42: ......
Page 63: ...4 Device Configuration...
Page 64: ......
Page 81: ...5 Programming...
Page 82: ......
Page 102: ......
Page 103: ...6 Interrupt System...
Page 104: ......
Page 120: ......
Page 121: ...7 Input Output Ports...
Page 122: ......
Page 132: ......
Page 133: ...8 Timer Counters and Watchdog Timer...
Page 134: ......
Page 153: ...9 Programmable Counter Array...
Page 154: ......
Page 170: ......
Page 171: ...10 Serial I O Port...
Page 172: ......
Page 187: ...11 Minimum Hardware Setup...
Page 188: ......
Page 197: ...12 Special Operating Modes...
Page 198: ......
Page 206: ......
Page 207: ...13 External Memory Interface...
Page 208: ......
Page 239: ...14 Programming and Verifying Nonvolatile Memory...
Page 240: ......
Page 250: ......
Page 251: ...A Instruction Set Reference...
Page 252: ......
Page 390: ......
Page 391: ...B Signal Descriptions...
Page 392: ......
Page 400: ......
Page 401: ...C Registers...
Page 402: ......
Page 436: ......
Page 437: ...Glossary...
Page 438: ......
Page 446: ......
Page 447: ...Index...
Page 448: ......
Page 458: ......