Page 19
ETX-EV133
User’s Manual
7.2
PCI Bus Arbitration Assignment
PCI Bus Request
PCI Master(s)
IDSEL
Request 0
LAN
AD23
Request 1
Routed to ETX connector X1
*
Request 2
Routed to ETX connector X1
*
Request 3
Routed to ETX connector X1
*
Request 4
Routed to ETX connector X1
*
Note
: IDSEL routing depends on the design of the carrier board.
7.3
PCI Interrupt Routing
Device
Net PIRQ0_L
Net PIRQ1_L
Net PIRQ2_L
Net PIRQ3_L
ETX Connector X1
PIRQA#
PIRQB#
PIRQC#
PIRQD#
Audio
PIRQC#
LAN
PIRQD#
7.4
Memory Map
Address
Size
Description
00000000~0009FFFF
640K
DOS Application Area
000A0000~000BFFFF
128K
Video Buffer Area
000C0000~000DFFFF
1M
Expansion Area
000F0000~000FFFFF
64K
System BIOS Area
000E0000 ~000EFFFF
64K
Extended System BIOS Area
00100000~DRAM Top
---
System memory area
DRAM Top ~FFFRFFFF
---
Bus area
FFFEFFFF ~ FFFFFFFF
64K
Initialization area
7.5
Direct Memory Access Channels
DMA#
Available
Description
0
Yes
1
Yes
Unavailable if Sound Blaster is enabled with default configuration
2
No
Used by FDC
3
Yes
Unavailable when LPT is in ECP mode
4
No
Used for Cascade
5
Yes
6
Yes
7
Yes
