Z80180 Datasheet, PDF (82/326 Pages) Zilog, Inc. – Z8018x Family MPU

Z 8018x Fam ily
M PU Us e r M anual
67
vector table can be relocated on 32 byte boundaries. IL is initialized to
00H during RESET.
Interrupt Vector Low Register (IL: 33H)
Bit
7
6
5
4
3
2
1
0
Bit/Field
IL7
IL6
IL5
?
R/W
R/W R/W R/W
?
Reset
00H
00H
00H
?
Note: R = Read W = Write X = Indeterminate ? = Not Applicable
Bit
Position Bit/Field R/W Value Description
7–5
IL7–5 R/W
4–0
?
N/A
The IL register is an internal I/O register which is
programmed with the OUT0 instruction and can be read
using the IN0 instruction.
Interrupt source dependent code
INT/TRAP Control Register (ITC)
ITC is used to handle TRAP interrupts and to enable or disable the
external maskable interrupt inputs INT0, INT1 and INT2.
UM005001-ZMP0400