Advantech PCM-3350 Manuel d'utilisateur télécharger pdf (Page 97)

87 Appendix C

C.2 1st MB memory map

C.3 DMA channel assignments

Table C.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

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

* E0000 - EFFFF is reserved for BIOS POST

Table C.3: DMA channel assignments

Channel Function

0 Available

1 Reserved (audio)

2 Floppy disk (8-bit transfer)

3 Available (parallel port)

4 Cascade for DMA controller 1

5 Available

6 Available

7 Available

* Audio DMA select 1, 3, or 5

** Parallel port DMA select 1 (LPT2) or 3 (LPT1)

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Advantech PCM-3350 Manuel d'utilisateur Page 97