External Cache; Hard Disk Drive Types; Microprocessor Upgrades - Epson Endeavor VL Specifications

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
U20, U21 (15-ns) Alliance
Winbond
Samsung
Micron
U22 - U28 (20-ns) Alliance
Winbond
U M C
Samsung
Micron -
Cache memory configurations
Bank 0
Bank 1
U22, U23, U24, U25
U26, U27, U28, U29
8 K x 8
8 K x 8
32Kx8
I
32Kx8 I32Kx8

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
For the DX/33, DX2/50, DX2/66, DX4 and Pentium OverDrive processor
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You may also need to change the settings of jumper J1 or DIP
switches 1,2, and 3.
EPSON Endeavor VL-6
Original manufacturer part number
AS7C256-15PC
W24257AK-15
KM68257BP-15
MT5C42568-15
AS7C256-20PC
W24266(7)AK-20
UM61256-20
KM68257 BP-20
MT5C42568-15
Total
Tag SRAM
(U20, U21) cache
8 K x 8
8Kx8/32Kx8 128KB
I32Kx8

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
Actual formatted size may be slightly different than size on drive label.
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