There is one more thing.
On 286's and above when in real mode, if the segment register is set to
0x then the address's above 0x will overflow into address bit
a20 giving access to an additional 65k(-16 bytes) of memory in real
mode. This was known as 'hi-mem' access and dos 4.0 and abo
On Wed, 24 Mar 1999, G. Crimp wrote:
> The A20 line has something to do with working around a bug in memory
> addressing that first showed up in 286's I think. I don't really know much
> about it, but on my 486, their is an option in the BIOS to set the line.
> You might try changing this
On Tue, Mar 23, 1999 at 03:03:28PM -0800, Alan Bailward wrote:
> > other machine, it brings up the boot: prompt, and then starts to load the
> > root FS from root.bin.. After loading for a while it fails with the message
> > "A20 gate not responding!"...
> [snip]
> > The problem machine is a 486DX3
Subject: RE: Problems installing Debian on a 486
Date: Wed, Mar 24, 1999 at 11:43:47AM +1200
In reply to:Matthew Gregan
Quoting Matthew Gregan([EMAIL PROTECTED]):
> At 15:03 1999-03-23 -0800, Alan Bailward wrote:
> >> other machine, it brings up the boot: prompt, and
Matthew Gregan wrote:
>
> At 15:03 1999-03-23 -0800, Alan Bailward wrote:
> >> other machine, it brings up the boot: prompt, and then starts to load the
> >> root FS from root.bin.. After loading for a while it fails with the message
> >> "A20 gate not responding!"...
I can't answer your question
At 15:03 1999-03-23 -0800, Alan Bailward wrote:
>> other machine, it brings up the boot: prompt, and then starts to load the
>> root FS from root.bin.. After loading for a while it fails with the message
>> "A20 gate not responding!"...
>[snip]
>> The problem machine is a 486DX33 with 8MB of RAM, i
> other machine, it brings up the boot: prompt, and then starts to load the
> root FS from root.bin.. After loading for a while it fails with the message
> "A20 gate not responding!"...
[snip]
> The problem machine is a 486DX33 with 8MB of RAM, if you need more info
> about the hardware, please let
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