Epson Endeavor L User Manual page 130

Memory
ROM
video RAM
Shadow RAM
Cache
Math
coprocessor
Clock/
calendar
A - 2
S p e c i f i c a t i o n s
4MB RAM standard on system board;
expandable to 36MB using lMB, 4MB, and
16MB SIMMs; SIMMs must be 72-pin,
32-bit or 36-bit, fast-page mode type with
an access speed of 70ns
128KB system and video BIOS and SETUP
code located in EPROM on main system
board
512KB or 1MB DRAM standard on main
system board; 512KB expandable to 1MB
using a 256 x 16-bit, 40-pin SOJDRAM
chip
Supports shadowing of system and video
BIOS ROM into RAM
8KB of internal cache on processor;
supports 32KB, 64KB, 128KB, or 256KB of
external cache using 28-pin, 8 x 8,20ns
DIP chips or 28-pin, 32 x 8,20ns DIP chips
and 28-pin, 32 x 8,15ns tag chips
For SX-based systems, can install an
80487SX processor with math coprocessor
support. Math coprocessor built into the
microprocessor for DX, DX2, DX4, and
Pentium OverDrive processors
Real-time clock, calendar, and CMOS
RAM socketed on main system board with
external 3.6V battery backup