Advantech PCM-3362 User Manual download pdf (Page 74)

PCM-3362 User Manual 66

B.1 System I/O Ports

* PNP audio I/O map range from 220 ~ 250H (16 bytes) MPU-401 select from 300 ~

330H (2 bytes)

B.2 1st MB Memory Map

* If Ethernet boot ROM is disabled (Ethernet ROM occupies about 16 KB)

* E0000 - EFFFF is reserved for BIOS POST

B.3 DMA channel assignments

Table B.1: System I/O ports

Addr. range (Hex) Device

000-01F DMA controller

020-021 Interrupt controller 1, master

040-05F 8254 timer

060-06F 8042 (keyboard controller)

070-071 Real-time clock, non-maskable interrupt (NMI) mask

87-8A DMA page register

0A0-0A1 Interrupt controller 2

0C0-0DF DMA controller

1F0-1F8 Fixed disk

278-27F Reserved (Parallel port 2,LTP3)

2E8-2EF Reserved (Series port 4)

2F8-2FF Serial port 2

378-37F Parallel printer port 1 (LPT 2)

3B0-3BF Monochrome display and printer adapter (LPT1)

3D0-3DF Color/graphics monitor adapter

3E8-3EF Series port 3

3F0-3F7 Diskette controller

3F8-3FF Serial port 1

Table B.2: 1st MB memory map

Addr. range (Hex) Device

F0000h - FFFFFh System ROM

*CC000h - EFFFFh Unused (reserved for Ethernet ROM)

C0000h - CBFFFh Expansion ROM (for VGA BIOS)

B8000h - BFFFFh CGA/EGA/VGA text

B0000h - B7FFFh Unused

A0000h - AFFFFh EGA/VGA graphics

00000h - 9FFFFh Base memory

Table B.3: DMA channel assignments

Channel Function

0 Available

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 87 88

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Advantech PCM-3362 User Manual Page 74