GVP HC+8 Impact II Questions- RAM issues

[c64man]

So I got a GVP Impact Series II + HC8 for my 2000 today, but it doesnt recognize all 8mb ram installed, When I drop the card to 4MB it reads 4MB from the A2630 and 3.5MB on the card. Where is the other 1/2 meg going. I replaced an A2091 with this and a Supra RAM board with 2MB. When the 2091 and supra was in with the 2630 it would show a full 8mb, with this card and the accel i get 7.5mb. I would like to use the 8mb on the GVP and 4MB on the 2630 giving me a total of 12MB Fast RAM

Thanks in advance

 

[Sardine]

found this on google.

HI have an Amiga 2000 which is two months
old, It has Klckstart
2.04. 1 also have a
Commodore A2286 Bridge Board
and a Commodore A2630
accelerator card (4Mb 32bit ram)
and a Microbotics 8-Up with 2Mb
installed.

Do you know why I can only
have a maximum of 6Mb of fast ram
when my bridge board is installed.
When tried to add another 2Mb of
memory I got the message
"AUTOCONFIG OUT OF MEMORY",
what does this mean? According to
the A2630 manual when you hold
down the right mouse button, apart
from the option to switch between
the 68000 and 68030, another
option should appear, UNIX. What Is
UNIX anyway, and how do I get It to
appear?

I understand that there are two
64 pin connectors on the back of
the A2630 board and that these are
32 bit memory connectors. Is there
a product out yet which makes use
of these connectors to let me
expand my 32 bit memory? Is the
A2630 fitted with the 68030 or the
680EC30? And finally, will any PC-
AT 3.5" 1.44Mb disk drive work as
a second drive when connected to
the disk drive ribbon cable from my
PC-AT
bridgeboard?


D Whlttlngham
Honley
Hudersfield
The bridgeboard takes up 512Kb of
the Amiga Autoconfig (8Mb) space,
so you are limited to 7.5Mb of fast
RAM, and as most RAM cards
expand in 2Mb segments, this
rounds down to 6Mb. The UNIX
option was on early cards when
Commodore were planning to release
a version of the UNIX operating
system for the Amiga 2000, however
they never did release UNIX for the
Amiga 2000 (in the UK anyway), so
the option was removed. There is at
least one RAM board that plugs in to
the A2630 called produced (I believe)
by DKB in the States, and allowing up to 112Mb of 32-bit RAM
to be added.

The Commodore A2630 is now
one of the few 68030 boards to use
the original (and best) 68030
processor, not the cut-down
680EC30. Future versions of the
Amiga Operating System may not
work properly with the 680EC30
processor. And yes, you can use any
standard 1.44Mb disk drive with the CBM A2286 Bridge Board. JR

- - - Updated - - -

the above relates to A2630 and the fact is uses the Zorro II address space, so as far as I read your limited to a total of 8mb fast ram. so it looks like one of the boards you have installed is taking 512k of the address space used by the Zorro II ram,

I dont have an Amiga2000 to test this but im sure someone else will verify this.

 

[Monkeh]

You wouldn't be able to use the 4mb on the 2630 and the 8mb on the GVP because:

The A2630 memory is located in the normal expansion address
range and is part of the standard system limit of 8 megabytes of
expansion bus memory. If your A2630 has 2MB of RAM, your
system will only support an additional 6MB (for instance, a
Bridgeboard and a 4MB RAM board). If the amount of expan-
sion RAM exceeds the 8MB limit, you may experience problems
with your Amiga.

manual that was taken from is here, top of page 11 - http://amiga.resource.cx/manual/A2630.pdf

If you want an 030 expansion in your 2k that will let you expand beyond the 8mb limit of the Z2 bus then you'd be needing something like the GVP G-force 030 which can put extra memory in an expanded address space with the faaastprep drivers. Its something I was planning on doing with my own 1500 which has a GVP Impact Series II + HC8 @6mb and a G-Force 030 25mhz @1mb, which gives me 1mb chip, 7mb fast atm but I plan to put a Picasso 2 in at some point which will be on the Z2 address space and I'm thinking of taking the 40mhz 030/fpu/crystal and 8mb ram (2x 4mb simms) from a 1230 jaws ii to upgrade this which means I'd have to use the expanded memory drivers.

 

[BlindGerMan]

You need no drivers on your GForce 030, just change the jumpers!

FaaastPrep is a partitioning tool for hard disks!

 

[Monkeh]

Indeed my bad misread the manual - but to show its possible here's my 2000 running with a GVP Impact Series II + HC8 fitted with 6mb and GVP G-force 030 fitted with 13mb for a total of 19mb fast and 1mb chip. The missing 512kb will be the Kickstart remapping via the accelerator .

 

[r0jaws]

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