Amiga 2000 Modification
James Hastie
Agnus. I have recently changed them over and I have been told that you need
to cut and move jumpers because otherwise it comes up with NTSC colour and
doesn't recognise the 1 meg. Also by putting the 512k into the Amiga 500
will it require any modifications seeing it has had a 1 meg Agnus in it.
So Does anyone know the modifications etc. the jumpers to move and the
solder to cut.
James Hastie
(either post a reply to this message or email: jha...@smartchat.net.au
Oliver Day
I have an A2000 with the 512Kb Angus but that chip isnt upgradable, It is a
A1000 one which can not be upgraded to 1 or 2 meg as they require more
signals.
Is your Angus square? If so I belive it had to be the 1 Meg or 2 Meg angus.
If its long and thin then its the old one that the A1000 uses and I dont
belive its upgradable.
Oliver Day
Russell Flowers
news:9m5cgb$5ff$1...@gnamma.connect.com.au...
> Hi I have an Amiga 2000 that has a 512k STD Agnus. My Amiga 500 has a 1mg
> Agnus. I have recently changed them over and I have been told that you
need
> to cut and move jumpers because otherwise it comes up with NTSC colour and
> doesn't recognise the 1 meg. Also by putting the 512k into the Amiga 500
> will it require any modifications seeing it has had a 1 meg Agnus in it.
> So Does anyone know the modifications etc. the jumpers to move and the
> solder to cut.
I used the following instructions to upgrade my Agnus:
http://www.titan.co.nz/amigaak/AA060126.htm. It worked just fine.
Interestingly, on my mother board, J500 was not a trace you had to cut, but
an actual jumper.
--
- Russell Flowers
- Home Page : http://lightning.prohosting.com/~opus2/
Jeff Buck
> an actual jumper.
It depends on the version of the motherboard on the A2000. The older
ones had to be cut.
Oliver Day
My A2000 (German version B? (Not a B2000)) has a long thin Angus, Not a
small square one.
Early A500 and A2000 used the same Angus as the A1000, There is no way to
upgrade these :(
There simply arnt enough data lines running to the Angus (Maybe a card that
fits betwen the CPU and the motherboard would work?).
m3ch
>222 183521 <toq684k...@xo.supernews.co.uk>
if so i wonder if it could be swapped into the 1000
(i doubt without the added ram etc).
mech
--
------------------------------------------------------------------------------
Paul R. Zager
>was wondering is the above DIP style agnus 1 meg??? if so i wonder if
>it could be swapped into the 1000
Nope, sorry. The DIP syle Agnus only came in the 1/2 meg flavor. the
Rejuvenator replacement daughter board allowed the use of one and two
meg Agnuses of the square variety.
--
Paul Zager
Proud Owner of Frankenthousand, the monster A1000
'030@50MHz, 2 megs chip/32 megs fast, 2 hard drives, OS 3.9
4xSCSI CD-ROM, SyJet, 56kHayes, 19" flicker free display
"Bride of Frankenthousand" A4000, Phase5 MarkIII '060@50;
2 megs chip/140 megs fast, PicassoIV, HD floppy, 4.5 gig SCSI3,
4.3 gig IDE, Concierto, 32x CD-ROM, GVP-I/O, GVP-4008SCSI,
19"MagView, X- Surf, DSL, OS 3.9. . . all in a big black Toaster Oven
case to compliment Frankenthousand
mark
an inferior design.
"Oliver Day" <sa...@used-boat.co.uk> wrote in message
news:toq684k...@xo.supernews.co.uk...
James Hastie
2000. True the German 2000 was a lot worse than an a500 or an
a2000(non-german). I have got and old german 2000 mb and the look of it is
different in many ways: 2 rca jacks,Chips in different places.
James Hastie
Peter Larsen
Probably not. Must be a rev 4.7 motherboard you have? ... Perhaps Peter
Kitter if available would know?
--
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Patrick Ford
Maybe, but given the current value of the latest release A2000s the German
ones are simply not worth messing around with.
Save the CIA chips and floppy drives before you dump the carcase.
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My domain contains .co, not .com as appears in the header.
Patrick Ford Auckland, Aotearoa (New Zealand)
Patrick Ford
> "Oliver Day" <sa...@used-boat.co.uk> writes:
> >222 183521 <toq684k...@xo.supernews.co.uk>
> >Hi,
> >My A2000 (German version B? (Not a B2000)) has a long thin Angus, Not a
> >small square one.
> >Early A500 and A2000 used the same Angus as the A1000, There is no way to
> >upgrade these :(
> >There simply arnt enough data lines running to the Angus (Maybe a card that
> >fits betwen the CPU and the motherboard would work?).
> >
> >
> >
> >
> I have been working on an Amiga 1000 lately,im about to upgrade it,and was wondering is the above DIP style agnus 1 meg???
> if so i wonder if it could be swapped into the 1000
> (i doubt without the added ram etc).
I'm certain the DIP Agnus predated the 1MB Agnus by a long time. The German
A2000 is just a hacked-about A1000.
Ville Jouppi
>
>Save the CIA chips and floppy drives before you dump the carcase.
Don't forget the processor and power supply.. Maybe the paula too. That's
about it .. :-)
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Email: vjo...@sci.fi, URL: http://www.sci.fi/~vjouppi/
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Arabuusimiehet World Domination
Oliver Day
Its got a 68030 in, 132 Meg ram and a Buddha IDE interface (And small 120
Meg HDD).
Its just sad about the chip ram (And hence the kickstart).