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Memory Settings:
| SIMM Speed |
CPU Speed |
| 60ns |
40MHz |
| 60 or 70ns |
33MHz |
| 60, 70 or 80ns |
25 or 28MHz |
NOTE: It is possible to use slower speed SIMM modules by adding a wait state to memory accesses
(putting a shunt on Jumper E), yielding a slower 5/3/3/3 access. This will allow you to use 80ns
memory with a 33 or 40MHz process with reduced performance.
| B |
C |
Description |
Largest SIMM |
| Off |
Off |
Double Sided, 16 megabit Density |
32 megabytes |
| Off |
On |
Double Sided, 4 megabit density |
8 Megabytes |
| On |
Off |
Single Sided, 16 megabit Density |
16 Megabytes |
| On |
On |
Single Sided, 4 megabit Density |
4 Megabytes |
Examples:
Four 4 megabyte SIMMs: B=On, C=On
One 16 megabyte SIMM: B=On, C=Off
Note: If you install a 16-megabyte module first, and you install an 8 Megabyte SIMM module
afterwards, you will need to set your jumpers to: B=OFF, C=OFF
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SCSI Settings:
| K |
J |
H |
Description |
| Off |
Off |
Off |
SCSI Autoboot Disabled |
| Off |
Off |
On |
Delay, LUN Scan, No Synch |
| Off |
On |
Off |
Delay, LUN Scan, Synch 200ns |
| Off |
On |
On |
Delay, LUN Scan, Synch 100ns |
| On |
Off |
Off |
LUN Scan, Synch 200ns |
| On |
Off |
On |
LUN Scan, Synch 100ns |
| On |
On |
Off |
Synch 200ns |
| On |
On |
On |
Synch 100ns |
Delay is a 10 second pause to allow slower drivers to power up before being
queried upon startup.
Logical Unit Number scan searchs for all LUNs of a particular ID.
Sychronous negotiation allows a quicker protocol handshake and data transfer from the SCSI device.
Synch 100ns is for fast synchronus, which allows a faster transfer rate, while Synch 200ns
is for slower.
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Other Notes:
If you have an early Amiga 4000 that has a processor module with a 28MHz oscillator in U104, change
the jumpers at JP100 and JP104 from "INternal Clock" to "External Clock".
JP1: SCSI Bus termination power.
TP1: Reserved.
TP2: Reserved.
| JP2 Jumper |
Description |
Off |
On |
| A |
Mode Select |
040 Active |
040 Disabled |
| B |
SIMM Bank Size |
Dual Sided |
Single Sided |
| C |
SIMM Module Bank Size |
16 Megabit |
4 megabit |
| D |
Wait State |
No Wait State |
Wait State |
| E |
Reserved |
Reserved |
Reserved |
| F |
MMU Disable |
MMU Enabled |
MMU Disabled |
| G |
Cache Disable |
Caches On |
Caches Off |
| H |
See Above Chart |
See Above Chart |
See Above Chart |
| J |
See Above Chart |
See Above Chart |
See Above Chart |
| K |
See Above Chart |
See Above Chart |
See Above Chart |
| L |
Reserved Stays ON |
Reserved Stays ON |
Reserved Stays ON |
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My memory does not appear, why?
Check your SIMMs() to make sure that they are either 4M, 8M, 16M or 32M.
Check your jumper settings for the type of memory that you have.
My SCSI device does not appear, why?
Try setting K, J and H jumpers to "Delay, LUN Scan, NoSynch". Check all cabling
to the device, including power. Follow the SCSI cable back to make sure it's connected to the
WarpEngine. Check to make sure that there are terminator resistors in the WarpEngine, and on the
last device connected on the SCSI chanin. There should only be 2 devices terminated
on the SCSI cable, usually the WE is one of them.
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