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Old 06 August 2009, 11:17   #1
ArcadeHeart
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[REQ] Magnum Ram 8 Card Documentation

Hi guys
I need the documentation of the Magnum Ram 8 expansion card, in particular way the jumper settings, I need to set the card in 4 mb mode because I have a problem using a pcmcia cf adapter with this card installed.
The ram card is this:
http://bboah.amiga-resistance.info/c...gi?HARDID=1025

Could anyone help me to find the documentation?
Thank you
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Old 06 August 2009, 11:39   #2
alexh
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With only two pins and 3 jumpers there are not many combinations

2^3 = 8 combinations

Shouldnt take long to work out.

P.S. I changed that page on BBoAH to take out the line:
Quote:
It has been reported to recognise 8MB even if the PCMCIA slot is in use, but there's no guarantee that it will not cause problems if memory usage becomes high."
It is inaccurate as no 8MB A1200 RAM cards can be PCMCIA safe and have 8MB. But some-one in their wisdom has put it back!!

Last edited by alexh; 06 August 2009 at 11:44.
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Old 06 August 2009, 13:02   #3
ArcadeHeart
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Quote:
Originally Posted by alexh View Post
With only two pins and 3 jumpers there are not many combinations

2^3 = 8 combinations

Shouldnt take long to work out.
yes mate, then i must cover the 1-2 and 3-4 pins (in red), do I?

1-2 . .
3-4 . .
5-6 . .


Quote:
P.S. I changed that page on BBoAH to take out the line:

It is inaccurate as no 8MB A1200 RAM cards can be PCMCIA safe and have 8MB. But some-one in their wisdom has put it back!!


PS: Thanks
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Old 06 August 2009, 13:21   #4
alexh
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Quote:
Originally Posted by ArcadeHeart View Post
then i must cover the 1-2 and 3-4 pins (in red)
No idea. Trial and error. The image of the RAM8 card on BBoAH has 3 * 2-pin jumpers. 8 Combinations.

Code:
 | 1-2 | 3-4 | 4-5 |
 |-----+-----+-----+
1| off | off | off |
2| off | off | on  |
3| off | on  | off |
4| off | on  | on  |
5| on  | off | off |
6| on  | off | on  |
7| on  | on  | off |
8| on  | on  | on  |

Last edited by alexh; 06 August 2009 at 13:26.
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Old 06 August 2009, 13:40   #5
ArcadeHeart
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Maybe I don't understand

Here a picture of the pins


There are 6 pins, then i think:

if I cover pin 1-2 I have 2 mb
if I cover pin 1-2 and 3-4 I have 4 mb
if I cover pin 1-2 and 3-4 and 5-6 I have 6 mb
if I leave pin free I have 8 Mb

Infact there are no pin covered, then I assume it's configured at 8 Mb, and because of this the pcmcia cf adapter does'nt work

The question were for information purpose, I must try different pin selection.
Thanks
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Old 06 August 2009, 13:45   #6
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I've added the information to the table. I wonder if the other settings do anything? Probably not.

Code:
A1200 Magnum RAM8 Jumper Settings
---------------------------------

 | 1-2 | 3-4 | 4-5 |
 |-----+-----+-----+
1| off | off | off | 8 MiB
2| off | off | on  |
3| off | on  | off |
4| off | on  | on  |
5| on  | off | off | 2 MiB
6| on  | off | on  |
7| on  | on  | off | 4 MiB
8| on  | on  | on  | 6 MiB
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