Re: A20 Gate enable sequence (setup.S)

2000-10-16 Thread Robert Kaiser
In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] (Richard B. Johnson) writes: > On Sun, 15 Oct 2000, Robert Kaiser wrote: > >> > The AMD/Elan box snoops for the sequence sent to the keyboard >> > controller to enable A<20>. >> > Robert Kaiser didn't write this. I did. And yes. It makes

Re: A20 Gate enable sequence (setup.S)

2000-10-15 Thread davej
Richard B. Johnson wrote.. > Robert Kaiser didn't write this. I did. You and a few hundred other embedded systems programmers. > FYI, the code that was submitted can't possibly work (it was backwards). > If it made your board 'work' there is something else broken. What do you mean backwards?

Re: A20 Gate enable sequence (setup.S)

2000-10-15 Thread Richard B. Johnson
On Sun, 15 Oct 2000, Robert Kaiser wrote: > > The AMD/Elan box snoops for the sequence sent to the keyboard > > controller to enable A<20>. > Robert Kaiser didn't write this. I did. And yes. It makes no difference about the 'board' it's in the chip. > Are you sure this is true of all boards usi

Re: A20 Gate enable sequence (setup.S)

2000-10-15 Thread Robert Kaiser
> The AMD/Elan box snoops for the sequence sent to the keyboard > controller to enable A<20>. Are you sure this is true of all boards using the AMD Elan ? So far, I've dealt with three different AMD Elan boards and only one of them (Jumptec DIMM-PC) seemed to have this feature. But even on that o

Re: A20 Gate enable sequence (setup.S)

2000-10-15 Thread Robert Kaiser
On Fri, 13 Oct 2000, Albert Cranford wrote: > Robert Kaiser wrote: > > > > On Fre, 13 Okt 2000 you wrote: > > > > Some boards (especially in the embedded PC area) implement only the > > > > latter method (some don't even _have_ a keyboard controller). > > > > With these boards, Linux fails to

Re: A20 Gate enable sequence (setup.S)

2000-10-13 Thread Richard B. Johnson
On Fri, 13 Oct 2000, Alan Cox wrote: > > Some boards (especially in the embedded PC area) implement only the > > latter method (some don't even _have_ a keyboard controller). > > With these boards, Linux fails to boot. > > Try the current 2.2.18pre. This has fast A20 too and I suspect will boot

Re: A20 Gate enable sequence (setup.S)

2000-10-13 Thread Albert Cranford
Robert Kaiser wrote: > > On Fre, 13 Okt 2000 you wrote: > > > Some boards (especially in the embedded PC area) implement only the > > > latter method (some don't even _have_ a keyboard controller). > > > With these boards, Linux fails to boot. > > > > Try the current 2.2.18pre. This has fast A20

Re: A20 Gate enable sequence (setup.S)

2000-10-13 Thread Robert Kaiser
On Fre, 13 Okt 2000 you wrote: > > Some boards (especially in the embedded PC area) implement only the > > latter method (some don't even _have_ a keyboard controller). > > With these boards, Linux fails to boot. > > Try the current 2.2.18pre. This has fast A20 too and I suspect will boot > on yo

Re: A20 Gate enable sequence (setup.S)

2000-10-13 Thread Tigran Aivazian
On Fri, 13 Oct 2000, Robert Kaiser wrote: > + > +# enable the "fast" A20 gate > + > + in al,#0x92 > + or al,#2 > + and al,#0xfe > + out #0x92,al > + this is not a valid AT&T assembler but looks like some ancient Intel syntax. Linux

Re: A20 Gate enable sequence (setup.S)

2000-10-13 Thread Alan Cox
> Some boards (especially in the embedded PC area) implement only the > latter method (some don't even _have_ a keyboard controller). > With these boards, Linux fails to boot. Try the current 2.2.18pre. This has fast A20 too and I suspect will boot on your box. Its had no problems on 2.2.18pre re

A20 Gate enable sequence (setup.S)

2000-10-13 Thread Robert Kaiser
Hi list, There seem to be two common methods for ix86-based boards to enable the A20 line: The traditional method that uses the keyboard controller (this is what Linux supports) and a method (sometimes referred to as "fast A20 Gate") that uses a special port address (0x92). Some boards (especia