Cirrus Logic VGA text modes and boot/setup.S

Cirrus Logic VGA text modes and boot/setup.S

Post by Laszlo Radanyi » Tue, 20 Sep 1994 00:22:37



Hi,

I posted a request for help yesterday, and I got one answer.

My problem seems to be that the kernel startup code won't
recognise my video card, which is a Cirrus Logic 5428.
Its BIOS is of version 1.3

The card is very nice, and after I had read the manual I
tested the extended text modes, of which the 100x37 was
just wonderful !

The problem is that I get two alternatives when chosing
video modes:

0: 80x50
1: 80x28

which are the regular SVGA modes defines in boot/setup.S.

I received a patch for the 542x but it still doesn't
matter: I just can't get it to work. Now I wonder:

How do I get the information that the kernel setup must
get ( I mean; WHAT is the code looking for, and exactly
HOW can I check it for the purpose of adjusting setup.S
so that it recognises my card ? )

Just for a test, I replaced the settings for 'unknown'
with the settings for 'cirrus' and the new cirrus54,
and I did get the new modes ( so the card was still not
recognised ) but when I chose one of the extended modes,
It didn't work. I guess there's something vital that
the code does for each card; I just don't have a clue
to what it is.

Please help me; here I sit with a nice display card that
can give me the terrific 100x37 mode, and I can only use
80x50 or 80x28 !! Hey, I can do the work by myself, if
only I get the necessary information....

BTW, I use kernel 1.1.43, oob.

Thanks,

Laszlo

 
 
 

Cirrus Logic VGA text modes and boot/setup.S

Post by Jamie Howe » Fri, 30 Sep 1994 15:30:07



: Hi,

: I posted a request for help yesterday, and I got one answer.

: My problem seems to be that the kernel startup code won't
: recognise my video card, which is a Cirrus Logic 5428.
: Its BIOS is of version 1.3

: The card is very nice, and after I had read the manual I
: tested the extended text modes, of which the 100x37 was
: just wonderful !

: The problem is that I get two alternatives when chosing
: video modes:

: 0: 80x50
: 1: 80x28

I got a patch from a friend (which I've deleted now) and it got my 5420
into 132x25 and 132x44. But both these modes look so grose I just went back
to 80x50 anyway :-)

So there is a patch out there to fix it, (not sure if it added the 100x37
mode though)

--
 //////////////////////////
 /      Jamie Howell      /

 //////////////////////////

 
 
 

1. Cirrus VGA Text modes and setup.S

Hi,

I posted a request for help yesterday, and I got one answer.

My problem seems to be that the kernel startup code won't
recognise my video card, which is a Cirrus Logic 5428.
Its BIOS is of version 1.3

The card is very nice, and after I had read the manual I
tested the extended text modes, of which the 100x37 was
just wonderful !

The problem is that I get two alternatives when chosing
video modes:

0: 80x50
1: 80x28

which are the regular SVGA modes defines in boot/setup.S.

I received a patch for the 542x but it still doesn't
matter: I just can't get it to work. Now I wonder:

How do I get the information that the kernel setup must
get ( I mean; WHAT is the code looking for, and exactly
HOW can I check it for the purpose of adjusting setup.S
so that it recognises my card ? )

Just for a test, I replaced the settings for 'unknown'
with the settings for 'cirrus' and the new cirrus54,
and I did get the new modes ( so the card was still not
recognised ) but when I chose one of the extended modes,
It didn't work. I guess there's something vital that
the code does for each card; I just don't have a clue
to what it is.

Please help me; here I sit with a nice display card that
can give me the terrific 100x37 mode, and I can only use
80x50 or 80x28 !! Hey, I can do the work by myself, if
only I get the necessary information....

BTW, I use kernel 1.1.43, oob.

Thanks,

Laszlo

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