3.2.3
Cache
3.2.4
DMA Controller
3.2.5
Interrupt Controller
3.2.6
Timer
3.2.7
Real-time Clock (RTC)
3.2.8
Keyboard Controller
3.2.9
Loudspeaker
3.2.10
Reset Logic
3.2.11
A20 Logic
3.2.12
Port B and NMI Logic
3.2.13
Video Controller
3.2.14
Floppy Disk Controlles
3.2.15
IDE-/AT-Bus
3.2.16
Parallel Port LPT1
3.2.17
Serial Ports COM1 and COM2
4.1.1
PC/104-Bus Pin Assignment
4.1.2
Signal Description
47
47
47
47
47
47
48
48
48
48
48
48
48
49
49
52
54