TMC LI7WM, User Manual

Page: 12 / 97

Chapter 3 Hardware Description
12 LI7WM User’s Manual
Address Device Description
000h - 01Fh DMA Controller #1
020h - 03Fh Interrupt Controller #1
040h - 05Fh Timer
060h - 06Fh Keyboard Controller
070h - 07Fh Real Time Clock,, NMI
080h - 09Fh DMA Page Register
0A0h - 0BFh Interrupt Controller #2
0C0h - 0DFh DMA Controller #2
0F0h Clear Math Copro cessor Busy Signal
0F1h Reset Math Coprocessor
1F0h - 1F7h IDE Interface
2F8h - 2FFh Serial Port #2(COM2)
378h - 3FFh Parallel Port #1(LPT1)
3F0h - 3F7h Floppy Disk Controller
3F8h - 3FFh Serial Port #1(COM1)
3.7 Onboard PCI-IDE
The PCI-IDE controller is a part of the Intel 810E chipset. It supports
PIO mode 3/4 and bus mastering Ultra DMA/33 and DMA/66. The
peak transfer rate of PIO mode 3/4 can be as high as 17MB/sec. Using
HDDs that support Ultra DMA/33, the peak transfer rate can reach 33
a n d 66MB/sec. There are two IDE connectors - primary IDE and
secondary IDE. With two devices per connector, up to four IDE devices
can be supported.
3.8 Main Memory
The LI7WM motherboard supports two 168-pin DIMM (Dual In-line
Memory Module) sockets to form a memory configuration from 64MB
to 512MB. DIMM modules can be 64M and 256MB in SDRAM. In
populating the DIMM sockets, any socket can be populated first. Refer
to the following table on how to do the memory configuration.
(DIMM1) (DIMM2) Total Memory
64MB ----- 64MB
128MB ----- 128MB
64MB 64MB 128MB
128MB 64MB 192MB
128MB 128MB 256MB
256MB 64MB 320MB
256MB 128MB 384MB
256MB 256MB 512MB