eZ80 CPU - writeframeofmind.biz

eZ80 CPU
User Manual
152
F
illegal instruction traps, 6
instruction set, 14
interrupts and traps, 6
interrupts, 4
introduction, 1
memory, 7
operating modes, 3
reset conditions, 13
status indicators, 14
flags
Add/Subtract (N), 15
Carry (C), 15
Half-Carry (H), 16
interrupt enable, 4
Parity/Overflow (P/V), 15
Sign (S), 17
Zero (Z), 16
H
H Flag (definition), 14
HALT, 44
I
I register, 2
I/O space, 7
IEF1, 4
IEF2, 4
illegal instruction traps, 6
IM n, 45
IN A (n), 46
IN r, (C), 47
IN0 r, (n), 48
INC m, 50
INC qq, 49
IND, 51
IND2, 52
IND2R, 53
Index registers, 2
INDM, 54
INDMR, 55
INDR, 56
INI, 57
INI2, 58
INI2R, 59
INIM, 60
INIMR, 61
INIR, 62
instruction notations, 17
instruction set
ADC A, s, 18
ADC HL, ss, 19
ADD A, s, 20
ADD rr, ss, 21
AND A, s, 22
BIT b, m, 23
CALL cc, Mmn, 25
CALL Mmn, 24
CCF, 27
CP A, s, 28
CPD, 29
CPDR, 30
CPI, 31
CPIR, 32
CPL, 33
DAA, 34
DEC m, 36
DEC qq, 35
DI, 37
DJNZ d, 38
EI, 39
EX (SP), rr, 42
EX AF, AF’, 40
EX DE, HL, 41
EXX, 43
HALT, 44
IM n, 45
IN A (n), 46
IN r, (C), 47
IN0 r, (n), 48
INC m, 50
INC qq, 49
IND, 51
UM007701-1100