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3.6 System Memory
The HS-2601A provides one SO-DIMM socket at location U2. This
onboard memory socket can support 64MB, 128MB and 256MB
SO-DIMM modules. The system’s maximum memory capacity is
256MB.
143
144 2
1
144-pin SO-DIMM Socket
pin orientation
NOTE:
SO-DIMM sockets out on the market these days have very fragile
contacts that attach to modules. We highly recommend you not to
regularly remove the installed SO-DIMM from its socket. Doing so
may wear out the contact between the socket and module.
3.7 DiskOnChip
Address Setting
The DiskOnChip function allows the system to boot or operate
without a FDD or a HDD. DiskOnChip
modules may be formatted as
drive C or A. With DiskOnChip, user may also execute DOS
commands such as FORMAT, SYS, COPY, XCOPY, DISCOPY and
DISKCOMP etc.
The U7 location onboard the HS-2601A is the DiskOnChip
module
socket. The board circuitry assigns a LOCKED starting memory
address of the installed module at D000. If you have another memory
device that has a similar memory capacity with that of the DOC in your
system, please set both at different memory address mapping to avoid
the mapping area conflicts. Failing to do so will not make the HS-2601A
and the additional memory device function properly.
3.7.1 Installing DiskOnChip
Modules
When installing a DiskOnChip module onto your board, please take
note of the following:
1. Orient yourself properly with the location of the DiskOnChip
socket. Try to locate the pin 1 location on your socket. Pin
numbers are usually printed on either the component side or the
solder side of your board.
2. Locate the Pin 1 location on your DiskOnChip
module. More
often than not, Pin 1 can be found on the lower right corner of
the chip. Please refer to the diagram for the exact location.