B.23
JCASE1(Open Case Connector)
Table B.24: Case Open Connector(JCASE1)
Pin
1
2
B.24
DMA Channel Assignments
Table B.25: DMA Channel Assignments
Channel
2
3
4
B.25
Interrupt Assignments
Table B.26: Interrupt Assignments
Priority
1
2
3
4
5
6
9
10
11
12
13
14
15
B.26
1st MB Memory Map
Table B.27: 1st MB Memory Map
Addr. range (Hex)
E0000h - FFFFFh
CC000h - DFFFFh
C0000h - CBFFFh
A0000h - BFFFFh
00000h - 9FFFFh
AIMB-767 User Manual
Signal
CASE_OPEN#
GND
Function
Floppy disk (8-bit transfer)
ECP Printer Port (LPT1)
Cascade for DMA controller 1
Interrupt#
Interrupt source
NMI
Parity error detected
IRQ0
System timer
IRQ1
Keyboard
IRQ8
System CMOS/real time clock
IRQ9
Microsoft ACPI-Compliant System
IRQ10
Serial communication port 4
IRQ13
Numeric data processor
IRQ14
Primary IDE Channel
IRQ15
Secondary IDE Channel
IRQ3
Serial communication port 2
IRQ4
Serial communication port 1
IRQ5
Serial communication port 3
IRQ6
Standard floppy disk controller
Device
BIOS
Unused
VGA BIOS
Video Memory
Base memory
72