Epson ActionDesk 4000 Ürün Bilgi Kılavuzu - Sayfa 4
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Epson ActionDesk 4000
External Cache
You can install 64KB, 128KB, or 256KB of external cache on
the ActionDesk 4000.
8 x 8, 20ns DIP chips, and one 8 x 8, 20ns tag chip
32 x 8, 20ns DIP chips, and one 8
28-pin, 32 x 8, 20ns DIP chips, and one 32 x 8, 20ns tag
Chip.
For the cache memory to work properly, you must install
chips in the following configuration (each bank contains four
cache memory sockets).
Cache memory configurations
U20,21,22,23
U29,30,31,32 U36
8 K x 8
8 K x 8
X
3 2 K x 8
3 2 K x 8
3 2 K x 8
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
Part
Manufacturer
486SX/33 processor
Intel
486DX/33 processor
Intel
486DX2/50 processor
Intel
486DX2/66 processor
Intel
Heat sink*
Tennmax Trading Corp.
Heat sink with fan**
Tennmax Trading Corp.
For the DX/33 processor
l
**
For the DX2/50 and the DX2/66 processor
DX/33, DX2/50, and DX2/66 processor upgrades require a
heat sink. If the fan is mounted on the heat sink for the
DX2/50 and DX2/66 processors, you cannot use the last
option slot. Also, make sure jumpers J16, J17, and J19 are set
correctly for the new processor. (See page 3.)
Epson ActionDesk 4000-4
8, 20ns tag chip
x
8 K x 8
64KB
8 K x 8
128KB
3 2 K x 8
256KB
I
Manufacturer's
part number
A80486SX-33
A80486DX-33
A80486DX2-50
A80486DX2-66
HS-486DX33-9
897-4545-061
Hard Disk Drive Types
The ActionDesk 4000 comes with a hard disk auto-sensing
feature. When you press Enter with the cursor positioned on
the Autotype Fixed
detects the type of hard disk drive you have installed and
fills in the drive information using values in the following
table.
Hard disk drive types
1
I
*
Actual formatted size may be slightly different than size on drive label; you
cannot change this value.
9/15/93
option in SETUP, the system
Disk