Re: Computer upgrade

Thanks, Changing the mem to 29 in LILO got Rtlinux running, now all I have
to do is get Xwindows running. I am having trouble finding the right setup
for Xwindows. It is the SIS 530 chip set and I have it set to 2meg.
Darrell

----- Original Message -----
From: <daveland@...>
To: <CAD_CAM_EDM_DRO@onelist.com>; <dgehlsen@...>
Sent: Sunday, February 13, 2000 9:24 AM
Subject: Re: Computer upgrade


> Here is the EMC memory infomation for using motherboards
> with integrated video. Check how much video ram you have
> reserved in BIOS and then use the selected shared memory
> address line below in you XXX.ini file.
>
> edit Your emc.ini ( or whatever xxx.ini file you are using) and
> use ONE of the following lines depending on your setup
>
> SHMEM_BASE_ADDRESS=0x0F00000 ; 16MB no shared video memory
> SHMEM_BASE_ADDRESS=0x1F00000 ; 32MB no shared video memory
> SHMEM_BASE_ADDRESS=0x3F00000 ; 64MB no shared video memory
>
> ; share video memory settings
> SHMEM_BASE_ADDRESS=0x0D00000 ; 16MB 2MB shared video memory
> SHMEM_BASE_ADDRESS=0x0B00000 ; 16MB 4MB shared video memory
> SHMEM_BASE_ADDRESS=0x0700000 ; 16MB 8MB shared video memory
>
> SHMEM_BASE_ADDRESS=0x1D00000 ; 32MB 2MB shared video memory
> SHMEM_BASE_ADDRESS=0x1B00000 ; 32MB 4MB shared video memory
> SHMEM_BASE_ADDRESS=0x1700000 ; 32MB 8MB shared video memory
>
> SHMEM_BASE_ADDRESS=0x3D00000 ; 64MB 2MB shared video memory
> SHMEM_BASE_ADDRESS=0x3B00000 ; 64MB 4MB shared video memory
> SHMEM_BASE_ADDRESS=0x3700000 ; 64MB 8MB shared video memory
>
>
> hope this helps!!!
>
> dave
>
> >darrel
> >
> >Your new motherboard is stealing MAin ram for onboard video. When RTlinux
loads
>
> >it is trying to reserve the top 1MB, But this has been used by the BIOS
for
>
> >video screen memory. So there is
> >a conflict and the system crashes.
> >
> >This why these boards are cheaper than the others.I have
> >several and they are great. You just need to look up in the bios ( or
the
> boot
> >screen) and determine how many MB they are
> >reserving in the BIOS for video. it is either 2MB 4MB or 8MB.
> >For EMC at normal resolutions and color depths (800x600 32768/16 bit
color)
>
> >2MB is fine.
> >
> >I will assume that you are using 32MB of RAM!! If you use 64MB
> >follow the same instructions but replace the numbers for 64MB, or email
me!
>
> >
> >
> >Total PHYSICAL ram=32MB
> >Subtract Video ram ( reserved by bios) = 2MB <- BIOS Setting!!!
> >Total ram LEFT FOR LINUX = 30MB
> >Subtract rtlinux Reserved shared memory ram = 1MB
> >Total ram for RTlinux=29MB
> >
> >
> >
> >So here is what you need to do.
> >1) determine the amount of ram the bios is reserving for video. OR set it
to
>
> >2MB so that you get the most amount of ram for the
> >CPU. You need to go into the BIOS screens (advanced settings) to set the
video
>
> >ram size to 2MB.
> >
> >2)The edit your lilo.conf file ( while booted in non-rt linux)
> >to read append="mem=29MB" see my simple math above. This will
> >start rtlinux with 1MB reserved as a shared memory buffer.
> >
> >3)rerun lilo
> >
> >4) reboot. and rtlinux should run. Test you Xwindows to make
> >sure the new 2MB video ram allows the screen resolution desired.
> >
> >5) You must now configure EMC to know the address of the physcal
> >ram for the 1MB buffer. ( I forget how to do this right now)
> >
> >Check that this gets you booted, I'll find the EMC config
> >file and post the memory addresses. IT just ends up being
> >2MB LESS ( in HEX!!) than the addresses that EMC has encoded
> >in there ( see Tims scritped install).
> >
> >How much Physical ram is installed?
> >
> >good luck
> >dave
> >
> >
>