UPD784938 Datasheet, PDF (679/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 29 INSTRUCTION OPERATIONS
(2) Operand column symbols
Symbol
+
–
#
!
!!
$
$!
/
[]
[%]
Auto-increment
Auto-decrement
Immediate data
16-bit absolute address
24-bit/20-bit absolute address
8-bit relative address
16-bit relative address
Bit inversion
Indirect addressing
24-bit indirect addressing
Description
(3) Flag column symbols
Symbol
(Blank)
0
1
×
P
V
R
No change
Cleared to 0
Set to 1
Set or cleared depending on result
P/V flag operates as parity flag
P/V flag operates as overflow flag
Previously saved value is restored
Description
(4) Operation column symbols
Symbol
jdisp8
jdisp16
PCHW
PCLW
Description
Signed two’s complement data (8 bits) indicating relative address distance between start address of
next instruction and branch address
Signed two’s complement data (16 bits) indicating relative address distance between start address of
next instruction and branch address
PC bits 16 to 19
PC bits 0 to 15
Preliminary User’s Manual U13987EJ1V0UM00
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