Installing Memory
(16) If you are not installing memory, skip to step 19: Configuring Other
Options.
The SX-1 takes one SIMM (Single-row, In-line Memory Module) to provide
Fast Memory for the system. This can be 1, 2, 4, or 8megabytes in size if you
do not have the Full Motion Video card; or 1, 2, or 4megabytes if you do
have the FMV.
This SIMM must be a72-pin type, providing a32-bit wide data path. There
are 36-bit wide SIMMs which will also work but the extra bits are not used in
the Amiga system. Memory chips also have aspeed rating and this SIMM
must be rated at 80 ns (nanoseconds) or faster (a lower number is faster).
Look closely at your SIMM. You will notice that one of the lower corners has
anotch taken out of it. This notch keys the board so that it will go into the
socket in only one direction. This notch should be nearer the pass-through
board when you install the SIMM in the SX-1.
(17) Set the SIMM into the socket at an angle. Once the edge of the SIMM is
down in the teeth of the socket, rotate ithe SIMM so that it is standing
vertically in the socket. Two metal springs (one on each end) will snap into
place to hold the SIMM upright. To remove the memory, simply press the
metal springs away from the SIMM. It will pop out when it is loose.
(18) Set jumpers 1and 2according to the particular size of SIMM you have
installed* Set jumper 3, RAM Disable, ON for now. The RAM Test can be
more thorough when AmigaDOS™ isn't already using the memory.
When ajumper is ON, it is connecting two puis. The best way to set ajumper
OFF is to leave it hanging off only one pin. This keeps them inside the
machine where they won tget lost.
Configuring Other Options
(19) Jumper number 4controls how long the system will wait on acold boot
for the drive to get up to speed. If this jumper is on, the SX-1 will add an
additional 10 seconds to the boot up process. Most drives will not require this
extra delay, so for the first-time installation, leave it off. If, after it's formatted,
the hard disk will not boot when you turn the CD32 on, but will boot just
fine when you press the reset button, try setting this jumper on.
The right-hand Alt (alternate) key is not present on some AT keyboards but is
required for many Amiga programs. If you want to use akeyboard that does
not have aright Alt key you can remove jumper 5. This will let you use the
right Control key, whicn the Amiga normally doesn't have, as aright Alt key.
When your keyboard has aright Alt key, jumper 5should be on. This makes
the right Control and Alt keys function normally.
(20) If you left the Memory Disable Jumper (#3) ON in step 18, continue with
the next section. Otherwise, re-attach the top cover to the SX-1, and screw it
SX-1 User's Guide 2nd Ed. -Page 6
