Z80180 Datasheet, PDF (223/326 Pages) Zilog, Inc. – Z8018x Family MPU

Z8018x Family
MPU User Manual
207
Instruction Set
This section explains the symbols in the instruction set.
REGISTER
g, g', ww, xx, yy, and zz specify a register to be used. g and g' specify an
8-bit register. ww, xx, yy, and zz specify a pair of 8-bit registers. Table 32
describes the correspondence between symbols and registers.
Table 32. Register Values
g,g' Reg. ww Reg. xx Reg. yy Reg. zz Reg.
000 B
001 C
010 D
011 E
100 H
101 L
111 A
00 BC
01 DE
10 HL
11 SP
00 BC
01 DE
10 IX
11 SP
00 BC
01 DE
10 IY
11 SP
00 BC
01 DE
10 HL
11 AF
Note: Suffixed H and L to ww, xx, yy, zz (ex. wwH, IXL) indicate upper and lower
8-bit of the 16-bit register respectively.
BIT
b specifies a bit to be manipulated in the bit manipulation instruction.
Table 33 indicates the correspondence between b and bits.
UM005001-ZMP0400