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PD780 датащи(PDF) 11 Page - NEC

номер детали PD780
подробное описание детали  HIGH·PERFORMANCE CP/M® ·COMPATIBLE NMOS 8·BIT MICROPROCESSOR
PDF  24 Pages
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производитель  NEC [NEC]
домашняя страница  http://www.nec.com/
Logo NEC - NEC

PD780 датащи(HTML) 11 Page - NEC

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Instruction Set
The instruction set of the IlPD780 consists of 158
types of instructions divided into 16 categories as
follows:
8-bit load operations
register exchanges
memory block searches
16-bit arithmetic operations
rotate and shift operations
jump operations
restart operations
miscellaneous operations
16-bit load operations
memory block transfers
8-bit arithmetic and
logic operations
bit set, reset, and test
operations
1/0 operations
call operations
return operations
general-purpose
accumulator and flag
operations
This comprehensive instruction set is made more
powerful by the array of addressing modes im­
plemented by the architecture, as follows:
bit addressing
register-indirect addressing
immediate addressing
extended addressing
implied addressing
register addressing
relative addressing
immediate-extended
addressing
indexed addressing
modified page zero
addressing
J.(PD780
Instruction Set Symbol Definitions
Symbol
Description
•
Flag not affected
o
Flag set
x
Flag
Flag affected according to result of operation
v
Overflow set
P
Parity set
IFF
I
nterrupt flip-flop set
C
CarrylLink
z
Zero
P/V
ParityIOverflow
S
Sign
N
Add/Subtract
H
Half Carry
4-13



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