ZLP128ICE01ZEM Zilog, ZLP128ICE01ZEM Datasheet - Page 122

• Manufacturer Part Number: ZLP128ICE01ZEM
• Description: EMULATOR CRIMZON Z8 ZLP12840
• Manufacturer: Zilog

Specifications of ZLP128ICE01ZEM

• Interface Type: RS-232, Ethernet, USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3829

Table 54. Symbolic Notation for Operands (Continued)
PS024410-0108
Symbol
Irr1
Irr2
Irr1
Irr2
IR1
IR2
IRR1
X(r1)
X(r2)
DA
RA
Assembly
Operand
@Rn
@RRn
@%
@%
%
LABEL
LABEL
aa
aa
aa
(Rn)
Description
Indexed (X) Addressing
X represents the 8-bit base address to which the offset is added.
r1 or r2 represents the name, R
Indirect Working Register
Ir1 or Ir2 represents the name a working register, Rn, where n = 0, 1, 2,..., 15.
@ indicates Indirect Working Register addressing using an 8-bit effective address
contained in the specified working register. The accessed register’s equivalent 12-bit
address is {RP[3:0], 8-bit effective address}.
Indirect Working Register Pair
Irr1 or Irr2 represents the name a working register pair, RRn, where n = 0, 2, 4,..., 14.
@ indicates Indirect Working Register addressing using an effective address in the
specified working register pair. Depending on the instruction, the effective address is in
the register file (12-bit address) or program/constant memory (16-bit address).
Indirect Register
IR1 or IR2 represents the 8-bit address of a register.
@ indicates Indirect Register addressing using an 8-bit effective address contained
in the specified register. The accessed register’s equivalent 12-bit address is
{RP[3:0], 8-bit effective address}.
Indirect Register Pair
IRR1 represents the 8-bit address of a register.
@ indicates Indirect Register addressing with a 16-bit effective address (in program
memory) contained in the specified register pair.
offset. The 8-bit effective address is the sum of X and the contents of working
register R
{RP[3:0],
Direct Address (JP, CALL)
In a JP or CALL operand, DA is a 16-bit program memory address in the range of
0000H to FFFFH. DA replaces the contents of the Program Counter to cause
execution to continue at a new location in Program Memory. In assembly source, the
address is typically represented as a label.
Relative Address (JR, DJNZ)
RA is a signed 8-bit program memory offset in the range +127 to -128, relative to the
address of the next instruction in Program Memory. In a JR or DJNZ operation, RA is
added to the Program Counter to cause execution to continue at a new location in
Program Memory. In assembly source, the jump address is typically represented as
an absolute label, and the assembler calculates RA.
8-bit effective address
n
. The accessed register’s equivalent 12-bit address is
P R E L I M I N A R Y
n
}.
, of a working register containing the 8-bit signed
Z8 LXM CPU Programming Summary
Product Specification
ZLP12840 OTP MCU
116