EPSON Endeavor VL
External Cache
You can install cache SRAM DIP chips to increase the cache
memory to 64KB, 128KB, or 256KB, depending on the
amount of cache memory installed at the factory. You must
change the settings of jumpers J4 through J7 to match the
cache memory size.
Supported
cache memory
SRAM
DIP chips
Socket
Manufacturer
Original manufacturer part number
U20, U21 (15-ns)
Alliance
AS7C256-15PC
Winbond
W24257AK-15
Samsung
KM68257BP-15
Micron
MT5C42568-15
U22 - U28 (20-ns)
Alliance
AS7C256-20PC
Winbond
W24266(7)AK-20
U M C
UM61256-20
Samsung
KM68257 BP-20
Micron -
MT5C42568-15
Cache memory configurations
Bank 0
Bank 1
Tag SRAM
Total
U22, U23, U24, U25
U26, U27, U28, U29
(U20, U21)
cache
8 K x 8
8 K x 8
8 K x 8
32Kx8
I
8Kx8/32Kx8 128KB
32Kx8
I32Kx8
I32Kx8
256KB
Microprocessor Upgrades
The computer’s processor can be upgraded by replacing the
existing microprocessor with a faster one. You can either
purchase an upgrade kit from EPSON or buy the individual
components separately, as listed in the following table.
Microprocessor upgrade components
l
For the DX/33, DX2/50, DX2/66, DX4 and Pentium OverDrive processor
You may also need to change the settings of jumper J1 or DIP
switches 1,2, and 3.
Hard Disk Drive Types
The following table lists standard hard disk drive types.
Check the table and the drive manufacturer’s documentation
for the correct drive type number. If none of the types listed
matches, select Type 47 (user-defined), and enter the
appropriate numbers for the cylinders, heads, precomp,
landing zone, and sectors in SETUP.
Hard disk drive types
l
Actual formatted size may be slightly different than size on drive label.
EPSON Endeavor VL-6
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