WIN Enterprises MB-73440, User Manual, Page: 54 / 82

Copyright © WIN Enterprises, Inc. MB-73440
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5. System Resources
5.1. System Memory Map
Address Range(decimal) Address Range(hex) Size Description
(4GB-16MB) FF000000 – FFFFFFFF 16 MB High BIOS Area
(4GB-18MB) – (4GB-17MB-1) FEE00000 – FEEFFFFF 1 MB MSI Interrupts
(4GB-20MB) – (4GB-19MB-1) FEC00000 – FECFFFFF 1 MB APIC Configuration Space
15MB – 16MB F00000 – FFFFFF 1 MB ISA Hole
1MB -15MB 100000 -EFFFFF 14 MB Main Memory
0K –1MB 00000 – FFFFFF 1 MB DOS Compatibility Memory
5.2. I/O Map
Hex Range Device
000-01F N/A
020-02D and 030-03F Interrupt controller 1, 8259 equivalent
02E-02F LPC SIO () configuration index/data registers
040-043 Timer, 8254-2 equivalent
04e-04f LPC SIO () configuration index/data registers
050-053 Timer, 8254-2 equivalent
060, 064, 8742 equivalent (keyboard)
061 NMI control and status
070-077 Real Time Clock Controller( bit 7 -NMI mask)
80 Port 80 debugger
081-090 N/A
092 Reset (Bit 0)/ Fast Gate A20 (Bit 1)
091
，
93-9F
N/A
0A0-0B1 and 0B4-0BD Interrupt controller 2, 8259 equivalent
0B2 and 0B3 APM control and status port respectively
0C0-0DF N/A
0E0-0EF N/A
0F0 Co-processor error register
0F1-0FF N/A