Epson SD-800 Floppy Combo Drive Settings
Tom Meek
information on...here is the file from the Epson BBS...may those here
and in the future find it helpful...I hope.
EPSON America Inc.
EPSON SD-800/SD-880 DUAL FLOPPY DISK DRIVE
INSTALLATION INFORMATION & SPECIFICATIONS
Thank you for your purchase of the EPSON SD-880 dual floppy disk
drive. This will guide you through the installation of the floppy
disk drive (FDD) into your computer. The EPSON SD-880 FDD is
compatible with all IBM PC compatible computers. This FDD uses the
industry standard ISA interface which assures you of industry-wide
compatibility.
This FDD conveniently combines a 3.5", 1.44 Megabyte floppy disk
drive with a 5.25", 1.2 Megabyte floppy disk drive in a half-height
chassis. With a single interface connector this FDD can be
installed in either the upper slot or lower slot in your PC. With
one jumper, the 3.5" FDD can be configured for the 'A' or 'B' drive
or the 5.25" FDD can be configured to be the 'A' or 'B' drive, the
choice is yours.
How to install the EPSON SD-880 dual FDD into your computer.
First turn off the computer and remove the power cable. Dangerous
AC and DC voltages are used within the computer case when the
computer is turned on and plugged in.
Please refer to your computer manual to determine the correct
method to open your computer case and to gain access to the FDD
slots in the front of the case.
Install the EPSON SD-880 FDD in either the upper or lower FDD slot
in your PC. The FDD is mounted using four screws, two on each side.
It may be necessary to repeat this procedure until the bezel of the
FDD mounts flush to the front of the PC.
The FDD can be configured 4 different ways depending on the FDD
connector used and the position of the SS1 jumper on the FDD.
There are 2 jumper blocks accessible from the top side of the
SD-800/SD-880 dual floppy disk drive. For most applications, no
changes are required in the jumper blocks. If a change is
determined necessary, make sure that the computer is off and
unplugged. Please refer to the diagram below for more information:
3.5" 5.25"
Slot Connector SS1 (1.44Mb) (1.2Mb)
Configuration 1: Upper Drive A A A B
Configuration 2: Upper Drive A B B A
Configuration 3: Lower Drive B A B A
Configuration 4: Lower Drive B H A B
FDD cable (inside PC) 34-pin Drive B 34-pin Drive A
Attach the 4-pin power cable to the rear of the FDD and attach the
34-pin edge connector to the rear of the FDD. When looking at the
rear of the FDD, pin 1 of the connector is to the left. There is a
small slot between pins 4 and 6 on the FDD connector, line up the
cable connector with this slot.
Jumper Configurations
A 1 3 D L R
--- -----------------------
X o o o o o
SS1 X SS2 o o X X o
o o o X X o
--- -----------------------
B 0 2 S H D
Default Jumper Settings
Jumper Definitions
Drive Select:
SS 1 Drive Configuration
A Drive Select A = 5.25
Drive Select B = 3.5"
B Drive Select A = 3.5"
Drive Select B = 5.25
Mode Change (5.25"):
SS 2 Logic
L Low: HIGH mode
High: NORM mode
H Low: NORM mode
High: HIGH mode
Motor Speed in NORM mode (5.25"):
SS 2 Speed
D 300 RPM
S 360 RPM
Do not place jumpers on SS2, pins 0, 1, 2, 3, R, or D.
SS1 Determines the "drive select" for the 3.5" and 5.25" FDD.
In the default position (A) the *A* drive is the 3.5" FDD
**if** the dual drive is in the upper slot of the pc and
uses the FDD connector on the end of the cable (after the
"twist").
If the SS1 jumper is changed to the (B) position, the 5.25"
FDD becomes the *A* drive **if** the dual drive is in the
upper slot of the PC and uses the FDD Connector on the end
of the cable (after the "twist").
SS2 No jumpers are necessary between the 0-1-2-3 jumpers.
The D-S jumper determines the rotational speed of the
5.25" FDD. The default position (S) sets the speed to 360RPM.
The (D) position sets the speed to 300RPM.
The L-H jumper determines the mode of the 5.25" FDD.
The default position (H) defines Low as Norm mode and
High = High mode.
Note: Most PC's can **only** access two FDDS. The SD-880 takes the
place of 2 FDDS.
Replace the cover of the computer and replace the power cable.
Turn on the computer and verify the CMOS settings on the computer
by running your SETUP program which came with your computer. Be
sure to inform the SETUP program of the configuration you have
selected for the new dual FDD.
Specifications:
Size:
Height 41.5mm
Width 148mm
Depth 192mm
Weight 1100g
3.5- FDD
Recording method (MFM) High Density Standard Density
Capacity (Unformatted) 2.0 1.0 MB
Capacity (Formatted) 1.474 0.737 MB
Transfer rate 500 250 KBit/Sec
Maximum recording density 17,434 8,717 BPI
Track density 135 TPI
Number of tracks (2 sided) 160
Disk rotation 300 rpm (typ)
Seek time (trk to trk) 3 ms
Settling time 15 ms
Average time for seeking 95 ms
Motor start time 500 ms
Average latency 100 ms
5.25- FDD
Recording method (MFM) High Mode Standard Mode
Capacity (Unformatted) 1.667 1.0 MB
Capacity (Formatted) 1.229 0.737 MB
Transter rate 500 300 KBit/sec
Maximum recording density (tk79) 9,870 5,922 BPI
Track density 96 TPI
Number of tracks (2 sided) 160
Disk rotation 360 rpm (Typ)
Seek time (trk to trk) 3 ms
Settling time 15 ms
Motor start time 500 ms
Average latency 83 ms
EPSON is a registered trademark of Seiko Epson Corporation.
SD800.TXT