🚀 go-pugleaf

In article <804143858snx@mercer.demon.co.uk>
           alex@mercer.demon.co.uk "Alex Chapman" writes:

>I've just replaced my old motherboard with a 486 AmiBios board with
>a 486DX2/66 Blue Lightening CPU.  Because it takes 2x72pin and 4x30
>pin simms, in place of the 8x30pin simms that my old motherboard
>took, I am presently just using 4x30pin 1MB simms.
>
>When I boot to DOS everything works fine.  When I boot to OS/2, I
>get a TRAP D.  I tried re-installing, which went fine until it told
>me to remove the last diskette and reboot.  Then the same thing.

It might be worth swapping the simms round. If one is flakey that might
make the problem go away.

Are these 30 pin simms fast enough ?


BTW does this 486DX2/66 Blue Lightening CPU have an FPU ?

-- 
John Beardmore     wookie@wookie.demon.co.uk
                   wookie@cix.compulink.co.uk

Windows '95:  95% the same old DOS and windows...

In article <804163467snz@wookie.demon.co.uk>
   John Beardmore <wookie@wookie.demon.co.uk> writes:
>>I've just replaced my old motherboard with a 486 AmiBios board with
>>a 486DX2/66 Blue Lightening CPU.  Because it takes 2x72pin and 4x30
>>pin simms, in place of the 8x30pin simms that my old motherboard
>>took, I am presently just using 4x30pin 1MB simms.
>>
>>When I boot to DOS everything works fine.  When I boot to OS/2, I
>>get a TRAP D.  I tried re-installing, which went fine until it told
>>me to remove the last diskette and reboot.  Then the same thing.
>
>It might be worth swapping the simms round. If one is flakey that might
>make the problem go away.

I'll try this, but the 4x1MB simms I am using are straight off my old
motherboard, and everything worked fine there.

>Are these 30 pin simms fast enough ?

70ns - so they should be, right ?

>BTW does this 486DX2/66 Blue Lightening CPU have an FPU ?

I'm a little hazy on this.  I kind of thought all 486DX2/66 had math
co pros, but is this the same thing ?  The honest answer is I don't
know.  But the board and CPU were 109UKP inc. vat. which seemed a
pretty good price (assuming I can get OS/2 working :} )

Alex Chapman  <alex@mercer.demon.co.uk>
<URL:http://metro.turnpike.net/mercer/index.html> (OS/2 info)

In article <804226361snx@mercer.demon.co.uk>
           alex@mercer.demon.co.uk "Alex Chapman" writes:

>In article <804163467snz@wookie.demon.co.uk>
>   John Beardmore <wookie@wookie.demon.co.uk> writes:
>>>I've just replaced my old motherboard with a 486 AmiBios board with
>>>a 486DX2/66 Blue Lightening CPU.  Because it takes 2x72pin and 4x30
>>>pin simms, in place of the 8x30pin simms that my old motherboard
>>>took, I am presently just using 4x30pin 1MB simms.
>>>
>>>When I boot to DOS everything works fine.  When I boot to OS/2, I
>>>get a TRAP D.  I tried re-installing, which went fine until it told
>>>me to remove the last diskette and reboot.  Then the same thing.
>>
>>It might be worth swapping the simms round. If one is flakey that might
>>make the problem go away.
>
>I'll try this, but the 4x1MB simms I am using are straight off my old
>motherboard, and everything worked fine there.
>
>>Are these 30 pin simms fast enough ?
>
>70ns - so they should be, right ?

Maybe. I guess it depends how the BIOS programs the chipset.


>>BTW does this 486DX2/66 Blue Lightening CPU have an FPU ?
>
>I'm a little hazy on this.  I kind of thought all 486DX2/66 had math
>co pros, but is this the same thing ?  The honest answer is I don't
>know.  But the board and CPU were 109UKP inc. vat. which seemed a
>pretty good price (assuming I can get OS/2 working :} )

Certainly sounds like a good price. Is that including the CPU ?

Intel 486DX chips do include the FPU but I thought that the IBM BL didn't.

-- 
John Beardmore     wookie@wookie.demon.co.uk
                   wookie@cix.compulink.co.uk

Windows '95:  95% the same old DOS and windows...