Cyberstorm showing all the modules connected.
Cyberstorm with individual modules
Thanks to Antoine Dubourg
Processor: 040@25Mhz, 040@40Mhz, 060@50Mhz
FPU: Internal
MMU: Internal
Max Ram: 128MB
Ram Type: 4x72pin SIMM Slots
SCSI II: Optional
The Cyberstorm Mk 1 is of a modular design and comes in three main parts (4 if you include SCSI II). The main part called the carrier board actually connects into the processor slot on the motherboard. The next component is referred to as the processor daughterboard. This is a small card which contains either an 040@25Mhz, 040@40Mhz or an 060@50Mhz, and usually contains a heat sink and/or fan. The processor daughterboard connects on top of the carrier board in parallel. The third component is the memory daughterboard. This contains 4 x 72pin SIMM slots for adding up to a maximum of 128MB and supports SIMM sizes of 4MB to 32MB in single or doubled sided in mixed configurations. The memory daughterboard is fitted to the carrier board on top but at right angles. If no memory is intended to be added to the memory daughterboard then it does not have to be fitted.
Please noteThere may not be enough clearance inside an unmodified A3000 to physically fit this board especially if the case is on. You may also require a slight motherboard modification for fitting to an A3000. Please also note the the SCSI module may cause conflict with the internal SCSI of an A3000, if fitted.
Jumper SettingsFor an 040@25Mhz, the jumper marked INT on the A4000 needs to be set for the Internal Clock Signal. For an 040@40Mhz and 060@50Mhz the jumper needs to be set to EXT for external Clock Signal.
These jumpers are located on the main carrier board.
Jumper Name | Position | Function |
---|---|---|
IPEND | ON | No mainboard CPU |
CBR | ON | CPU on mainboard |
DIAG | Pos 1-2 | Enable Diagnostic ROM |
Pos 2-3 | Disable Diagnostic ROM | |
ROM Size | Pos 1-2 | 16bit ROMs |
Pos 2-3 | 8bit ROMs | |
ROM Count | Pos 1-2 | Two ROMs Installed |
Pos 2-3 | One ROM Installed | |
JPA | Pos 1-2 | Normal RAM Access |
Pos 2-3 | Fast RAM Access | |
OPEN | Slow RAM Access | |
MB Burst | Pos 1-2 | Enable MainBoard burst access |
Pos 2-3 | Disable MainBoard burst access |
Picture of the Memory Board
The following are the jumpers for RAM configuration on the memory board.
Total RAM | Bank 0 | Bank 1 | Bank 2 | Bank 3 | Jumper Reference See Diagram Below |
---|---|---|---|---|---|
4/8/12/16MB | 4/0MB | 4/0MB | 4/0MB | 4/0MB | A |
8/12/16/20MB | 8MB | 4/0MB | 4/0MB | 4/0MB | B |
16/20/24/28MB | 16MB | 4/0MB | 4/0MB | 4/0MB | C |
32/36/40/44MB | 32MB | 4/0MB | 4/0MB | 4/0MB | D |
16/20/24MB | 8MB | 8MB | 4/0MB | 4/0MB | E |
24/28/32MB | 16MB | 8MB | 4/0MB | 4/0MB | F |
40/44/48MB | 32MB | 8MB | 4/0MB | 4/0MB | G |
32/36/40MB | 16MB | 16MB | 4/0MB | 4/0MB | H |
48/52/56MB | 32MB | 16MB | 4/0 | 4/0 | I |
64/68/72MB | 32MB | 32MB | 4/0MB | 4/0MB | J |
24/28MB | 8MB | 8MB | 8MB | 4/0MB | K |
32/36MB | 16MB | 8MB | 8MB | 4/0MB | L |
48/52MB | 32MB | 8MB | 8MB | 4/0MB | M |
40/44MB | 16MB | 8MB | 8MB | 4/0MB | N |
56/60MB | 32MB | 16MB | 8MB | 4/0MB | O |
72/76MB | 32MB | 32MB | 8MB | 4/0MB | P |
48/52MB | 16MB | 16MB | 16MB | 4/0MB | Q |
64/68MB | 32MB | 16MB | 16MB | 4/0MB | R |
80/84MB | 32MB | 32MB | 16MB | 4/0MB | S |
96/100MB | 32MB | 32MB | 32MB | 4/0 | T |
32MB | 8MB | 8MB | 8MB | 8MB | U |
40MB | 16MB | 8MB | 8MB | 8MB | V |
56MB | 32MB | 8MB | 8MB | 8MB | W |
48MB | 16MB | 16MB | 8MB | 8MB | X |
64MB | 32MB | 16MB | 8MB | 8MB | Y |
80MB | 32MB | 32MB | 8MB | 8MB | Z |
56MB | 16MB | 16MB | 16MB | 8MB | 1 |
72MB | 32MB | 16MB | 16MB | 8MB | 2 |
88MB | 32MB | 32MB | 16MB | 8MB | 3 |
104MB | 32MB | 32MB | 32MB | 8MB | 4 |
64MB | 16MB | 16MB | 16MB | 16MB | 5 |
80MB | 32MB | 16MB | 16MB | 16MB | 6 |
96MB | 32MB | 32MB | 16MB | 16MB | 7 |
112MB | 32MB | 32MB | 32MB | 16MB | 8 |
128MB | 32MB | 32MB | 32MB | 32MB | 9 |
Bank 0 is closest to the connector. The largest SIMM must always be placed in bank 0, with the second largest in bank 1 etc etc.