User guide

Installing and Configuring Enhanced OS-9

Enhanced OS-9 for X86 PCAT 63

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How to modify the OS-9 descriptor

Edit the file MWOS/OS9000/80386/PORTS/PCAT/SPF/SP83C790/DEFS/spf_desc.h

and change the following fields as needed:

#define PORTADDR0x00000300/* Base address of hardware */

#define VECTOR0x4a/* Port vector */

#define CPU_BASE0xcc000/* CPU BASE */

#define RAM_SIZE0x4000/* RAM Size */

Then, remake the descriptor: change to the directory

MWOS/OS9000/80386/PORTS/PCAT/SPF/SP83C790 and type

"os9make -f=spfdesc.mak"

Next time you run the Wizard, it will use the new descriptor.

Low-level System Changes

We must now change the low level system if System State debugging is

used.

In the file MWOS/OS9000/80386/PORTS/PCAT/ROM/cnfgdata.des

find the following lines:

#define LL83790_PORT_ADDRESS0x300

#define LL83790_IF_VECTOR0x4a

These determine the port addresses and/or IRQ information, and

should be changed as required by the system. For IRQ15 here are the

changes required:

#define LL83790_PORT_ADDRESS0x300

#define LL83790_IF_VECTOR0x4f

The Wizard will automatically re-make the cnfgdata module.