Epson 386SX - Manual (Page 67)

Adding an Optional Memory Card
The first Setup summary screen shows the current amount of
memory installed in your system. The Equity 386SX comes with
1MB of on-board memory. (On-board memory is memory that
resides on the computer’s main system board.) Setup
automatically configures this memory as 640KB of base memory
and 384KB of extended memory. If you install even more
memory, Setup configures it as extended memory also.
You can add more memory to your computer by installing single
inline memory modules (SIMMs) or by installing an optional
memory card. Because SIMMs do not require you to use an
option slot, they provide a more efficient way to add memory
than optional memory cards: You can also add both SIMMs and
a memory card.
All memory in your system has a particular address. A memory
address is the exact area where the memory resides in the
system. If you add memory by installing a memory card, the
address of the memory on the card could overlap the address of
memory you added by installing SIMMs, or there could be a gap
between the two addresses.
Setup displays this error message on the first summary screen if a
memory address overlap occurs:
ERROR: Memory overlapping from 100000h to
260000h
Reset Add-on memory board starting at
200000h or 260000h
If there is a gap between the memory addresses, you see this
message:
ERROR: Memory gapping from 160000h to
200000h
Reset Add-on memory board starting at
100000h or 160000h
Running the Setup Program 2-29