User manual

4. Interrupt Controller
35
7
6
543 210
Register: ICW2
Address: Base+1
Vector Pointer
0
Access: Write
Vector
Upper 5 bits of pointer
0
0
Initialization Register ICW2
Register: Master ICW3
Address: Base + 1
Access: Write
0
00
0
0100
7654 3 210
Master Initialization Register ICW3
Register: Slave ICW3
Address: Base + 1
Access: Write
0
00
0
00 10
76543210
Slave Initialization Register ICW3
00
765 43210
01
Register: ICW4
Address: Base+1
End of interrupt
0 Normal
1 Automatic
Nesting mode
0 Standard
1 Special
0
AEOI
0
SFNM
Access:Write
Initialization Register ICW4