Interrupt Controllers - NEC VERSA 2000 Service And Reference Manual

Table Section 2-6 Versa 2000 Series I/O Address Map
Address (Hex)
0C10H
03E0-03E1

Interrupt Controllers

Using interrupts, it is possible to change the code sequence. To change the sequence,
reassign the interrupt-levels. Fifteen interrupts can be used with a cascade connection of
8259INTC x 2.
Interrupt-level assignments 0 through 15 are listed in Table Section 2-7, in order of
decreasing priority.
Table Section 2-7 Versa 2000 Series Interrupt Level Assignments
Controller
Master/Slave
Master
Master
Master
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Master
Master
Master
Master
Master
*Industry standard locations
I/O Device Name
Extended System Port 6
PCMCIA (CL-PD6720)
Priority Name
IRQ00
0
IRQ01
1
IRQ02
2
IRQ08
3
IRQ09
4
IRQ10
5
IRQ11
6
IRQ12
7
IRQ13
8
IRQ14
9
10 IRQ15
11 IRQ03
12 IRQ04
13 IRQ05
14 IRQ06
15 IRQ07
Device
Counter/Timer 1
Keyboard
INT output from controller 2
Real-time Clock
Reserved
Reserved
Reserved)
PS/2 Mouse*
Math Coprocessor (built into CPU)
Hard Disk Controller 1
Reserved
Serial Port 2 (Internal Fax Modem)
Serial Port 1
Reserved
Diskette Drive Controller*
Parallel Port 1*