If this is true then you might be able to connect A18 (I think that
is the right one) from the ISA bus to the correct pin on the jumper to
directly access all 512K.
I have a Gigabyte board but it doesn't have this feature. To run a
512K BIOS we made a little socket adaptor that let us intercept the A18
pin of the flash and connect it to A18 of the ISA bus with a jumper.
I think I previously heard that someone on this list had made this sort
of thing easier. ...it might have had a latch on it so you could
control the upper address bits from software and didn't need the
jumper. ...though you would also only get 256K at a time with this
method.
Ty
On 8 Mar, Joe Cooper wrote:
> If it's like the AOpen boards that have dual BIOS storage, it is 'hard'
> switchable via a jumper switch. Meaning both are not simultaneously
> accessible or usable, only one at a time.
>
> Alain Greppin wrote:
>
>> Hello,
>>
>> Has anyone some information about the DualBIOS feature
>> on the Gigabyte boards ?
>>
>> Do you think it is possible to load linuxbios
>> and a minimal kernel in this DualBIOS wich is 2 x 256k ?
>>
>> And, in general, when the BIOS is flashed with linuxbios,
>> how can I reflash it to upgrade ?
>>
>> What i want, is to build a cluster of diskless Linux boxes.
>> What is best for this case ? a) linuxbios b) nic + boot rom
>>
>> Thanks,
>> Alain Greppin
>
> --
> Joe Cooper <[EMAIL PROTECTED]>
> Affordable Web Caching Proxy Appliances
> http://www.swelltech.com
--
Tyson D Sawyer iRobot Corporation
Senior Systems Engineer Real World Interface Div.
[EMAIL PROTECTED] Robots for the Real World
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