SMA_SIZE and IDE_BOOT_DRIVE on pcchips810
Steve Gehlbach
steve at nexpath.com
Wed Mar 12 16:44:01 CET 2003
Alessio Sangalli wrote:
> SMA_SIZE should set the amount of framebuffer memory; but which are the
> possible values? How can I set the minimum, or 8MB, or 64MB?
>
SiS 630 Dev 0 FN 0
Register 63h DRAM Status Register
Bit 7 =1 enable, =0 disable, shared memory
Bits[6:4] Size (Total Share memory size for 128 bit mode)
Shared Memory Size on DIMM0
000 2M 4M
001 4M 8M
010 8M 16M
011 16M 32M
100 32M 64M
101 64M Not Supported
Others : Reserved
Bit 3: reserved
Bit 2: DIMM2 installed =1, absent =0
Bit 1: DIMM1 "
Bit 0: DIMM0 "
> /dev/hda -> 0
> /dev/hdb -> 1
> /dev/hdc -> 2
> /dev/hdd -> 3
>
> Is it correct???
Yes. Some of us boot from /dev/hdc using CF, then mount /dev/hda0 as
the root device.
>
> P.S. Is it possible to boot from a CDROM?
Not sure, probably not.
-Steve
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