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RAM Erweiterungen
DKB: 3128
Connection: Zorro III |
Hi Res Version, Populated Card - 331K
Hi Res Version, Box Front - 177K
Hi Res Version, Box Rear - 181K
Max Ram: | 128MB |
Ram Type: | 4 x 72pin SIMMs |
Connection: | Zorro III |
The DKB 3128 is a full-length Zorro-III memory expansion board capable of accepting 32-bit SIMMs of 4, 8, 16 or 32 megabytes in size for a total of 128MB of add-on memory. The SIMMs you choose should be 80 ns or faster. The SIMM sockets hold the installed SIMMs parallel with the DKB 3128 circuit board so the DKB 3128 remains low profile even with SIMMs installed. If you install SIMMs larger than 4MB you will need to remove one or more jumpers from the SIMM size jumpers. If you install an 8 or 32 megabyte SIMM module, you must remove the shorting block on J1. If you install a 16 or 32 megabyte SIMM module, you must remove the shorting block on J2. Jumper J3 is not used and should not have a shorting block on it. Note: The DKB 3128 circuit board is silk-screened with this information. You can mix SIMM sizes on the DKB 3128 but you must put the largest SIMM in the first SIMM socket labeled "BANK 0" below. Additionally, if you mix SIMM sizes, you must install the included 3128 program at the beginning of your startup-sequence. If you do not, the system will assume every module is the same size as the largest and add "phantom" memory which isn't actually there. Running your system in this state is not a good idea. Memory on the DKB 3128 is not as fast as motherboard memory in the A4000, about 80% of normal A4000 memory speed according to AIBB.
Board Layout
_________________________________________________________________
| 123 ____ ____ ____ ____ |___
| ::: | | | | | | | | |
| SIMM | | | | | | | | |
| Size B| | B| | B| | B| | |
| A| | A| | A| | A| | |
| N| | N| | N| | N| | |
| K| | K| | K| | K| | |
| | | | | | | | | |
| 0| | 1| | 2| | 4| | |
| | | | | | | | | |
| | | | | | | | | |
| _|_| _|_| _|_| _|_| |
| |
|_________________________________________________________________|
||||||||||||||||||||||||||| |
SIMM Size Jumper Settings
4MB 8MB 16MB 32MB
J1 L R L R
J2 L L R R
R = Remove
L = Leave Installed
J3 should never be installed.
Please NOTE, some DKB 3128s SIMM sockets may be labelled 1 to 4 rather than 0 to 3.
Contributions to this page by:
Orjan Lindgren, Phil Wright, Sean, Warren Block
Letzte Änderung des Artikels: 2009-01-27 09:34
Revision: 1.0
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