Z8F042AHJ020SG Datasheet, PDF (223/282 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
206
Register file size varies depending on the device type. See the device-specific Z8 Encore!
XP Product Specification to determine the exact register file range available.
eZ8 CPU Instruction Notation
In the eZ8 CPU Instruction Summary and Description sections, the operands, condition
codes, status flags and address modes are represented by a notational shorthand that is
described in Table 118.
.
Table 118. Notational Shorthand
Notation
b
cc
DA
ER
IM
Ir
IR
Irr
IRR
p
r
R
RA
rr
RR
Description
Bit
Condition code
Direct address
Extended addressing register
Immediate data
Indirect working register
Indirect register
Indirect working register pair
Indirect register pair
Polarity
Working register
Register
Relative address
Working register pair
Register pair
Operand
b
—
Addrs
Reg
#Data
@Rn
@Reg
@RRp
@Reg
p
Rn
Reg
X
RRp
Reg
Range
b represents a value from 0 to 7 (000B to 111B).
Refer to the Condition Codes section in the eZ8
CPU Core User Manual (UM0128).
Represents a number in the range 0000H to
FFFFH.
Reg. represents a number in the range of 000H
to FFFH.
Data is a number between 00H to FFH.
n = 0–15.
Reg. represents a number in the range of 00H
to FFH.
p = 0, 2, 4, 6, 8, 10, 12, or 14.
Reg. represents an even number in the range
00H to FEH.
Polarity is a single bit binary value of either 0B
or 1B.
n = 0 – 15.
Reg. represents a number in the range of 00H
to FFH.
X represents an index in the range of +127 to –
128 which is an offset relative to the address of
the next instruction.
p = 0, 2, 4, 6, 8, 10, 12, or 14.
Reg. represents an even number in the range of
00H to FEH.
PS022827-1212
PRELIMINARY
eZ8 CPU Instruction Notation