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Toshiba T-Series T3200 User manual

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1.1
GENERAL
Toshiba
Personal
Computer
T3200
(hereinafter
referred
to
as
T3200)
is
a
portable
personal
computer
which
is
compatible
with
IBM
PC/AT
si
tuated
at
higher
rank
of
portable
computer
than
Toshiba
T3l00.
Hardware
of
the
T3200,
a
lot
of
IC
chips
are
C-MOS
type
so
that
the
power
consumption
is
very
little
and
Gate
Array
chips
are
applied
so
that
it
is
very
compact
and
light
weight.
The
T3200
is
composed
of
as
follows:
System
PCB
(Printed
curcuit
board)
Hard
disk
control
PCB
3.5-inch
floppy
disk
drive
3.5-inch
hard
disk
drive
Plasma
display
Keyboard
Power
supply
unit
FIGURE
1-1
T3200
Personal
Computer
1-1
A
3.5-inch
Floppy
disk
drive
(FDD)
is
double-sided,
double-density,
double-track
with
storage
capacity
of
720
kilobytes
(formatted).
A
3.5-inch
hard
disk
drive
(HDD)
with
storage
capacity
of
40
megabytes
(formatted)
is
the
second
external
storage
device.
The
plasma
display
with
pixels
of
720
in
columns
and
400
in
rows.
The
keyboard
has
85
keys.
For
most
applications
it
can
be
used
exactly
like
a
standard
typewriter
keyboard.
The
power
supply
unit
provides
+5 Vdc
and
+12
Vdc
power
to
every
component
in
the
system
unit,
including
the
option
cards.
For
the
plasma
display,
this
unit
regulates
+205
Vdc
power.
This
unit
has
a
ventilation
fan,
driven
by
+12
Vdc.
The
fan
enhances
the
reliability
and
durability
of
the
T3200
system
unit.
The
T3200
provided
connecting
to
the
optional
devices
at
the
rear
panel
of
the
system.
There
are
three
connectors
such
as
a
parallel
printer
(or
an
external
floppy
disk
drive),
an
RGB
direct
drive
CRT
display
and
an
RS-232C
device.
The
connector
for
a
parallel
printer
can
be
used
to
connect
an
external
FDD
unit
by
changing
the
A-B-PRT
switch
setting.
1-2
1.2
SYSTEM PCB
System
PCB
is
composed
of
the
following
devices:
o
Central
processor:
CPU
(80286-12)
(12
MHz/6
MHz»
o
Numeric
data
processor:
NPU
(80287,
optional)
o Memory
RAM
ROM
(Main
BIOS)
....
.
(AGS
BIOS)
.....
.
Video
RAM
..........•
1
Mbyte
standard
3
Mbytes
(option
card)
---
"LIM"
standard
64
Kbytes
(16
bits)
32
Kbytes
(8
bits)
256
Kbytes
o
System
suP?ort
elements
Direct
memory
access:
DMA
(82C37)
Programmable
interrupt
controller:
PIC
(82C59)
Programmable
interval
timer:
PIT
(82C54)
Real
time
clock:
RTC
(MC1468l8)
o
Floppy
disk
controller:
FDC
(TC8565F)
o
Keyboard
controller:
KBC
(u8042)
x 2
o
Display
controller:
PEGA2,
AGS
G.A.
o
Gate
array
Bus
driver
Memory
mapper
DMA
driver
I/O
controller
LIM
AGS
(Advanced
graphics
subsystem)
1-3
1.2.1
DIP
switches
The
system
has
DIP
switches
which
are
located
at
the
rear
panel.
The
following
table
shows
function
of
the
DIP
switches.
TABLE
1-1
DIP
Switch
Functions
DIP
Setting Description
Switch
ON
Auto-Switched display
mode
1
OFF
IBM
EGA
full
compatible
ON
PRT
port
used
both
for
input
and
output
2
OFF
PRT
port
only
for
output
ON
Communications
port
as
CH2
3
OFF
Communications
port
as
CH
1
ON
Double
font
in
plasma
for
TEXT
4
OFF
Single
font
in
plasma
for
TEXT
ON
Disable
CRTC
for
EXT.CRTC
5
OFF
Enable internal
CRTC
(normal)
ON
North
European Font
to
display
6
OFF
Other
Fonts (Normal)
7to
10
(Defined
as
follows)
Monitor
in
use
7 8 9
10
Monochrome
OFF
OFF OFF OFF
Standard
RGB
(40 column
mode
is
default)
ON
OFF
OFF
ON
Standard
RGB
(80 column
mode
is
default)
OFF OFF
OFF
ON
Enhanced
RGB
(200
line
or
emulation
of
standard
RGB
is
ON ON
ON
OFF
default)
Enhanced
RGB
(350 line,
true
enhanced
operation
is
default)
OFF
ON ON
OFF
1-4
1.2.2
Jumper
straps
The
system
has
six
jumper
straps
(PJ
2)
which
are
located
on
the
keyboard
control
PCB.
Usually
the
six
jumper
straps
are
all
open.
The
following
figure
shows
location
of
the
jumper
straps.
MiwtfU
PJ
2
I I
FIGURE
1-2
Jumper
Strap
Locations
The
following
table
shows
function
of
the
jumper
straps.
TABLE
1-2
Jumper
Strap
Functions
Name Function
1-2
Not
used
3-4 2HD
FDD
type
Open ... 1.6
Mbytes
Short ... 2.0
Mbytes
5-6
Internal
FDD
numbers
Open ...
OneFDD
Short ...
Two
FDD/s
7-8
FDD
type
Open ... 2DD
Short
... 2HD (1.6 Mbytes/2.0 Mbytes)
9-10 Standard
memory
size Open ... 640 kbytes
Short
... 512 kbytes
11-12 Used
3M
B
memory
card Open ... Used
as
the
extended
memory
and
mode
(Option)
the
expanded
memory.
Short
... Used
as
the
only
expanded
memory.
1-5
1.3
3.5-INCB
FLOPPY
DISK
DRIVE
The
floppy
disk
drive
(FDD)
used
in
the
T3200
is
high
performance,
high
reliable,
slim
sized
FDD
for
3.5-inch
floppy
disks
with
recording
capacity
of
720
kbytes
(formatted)
in
double-sided,
double
density
and
135
tracks
per
inch
operation.
The
specifications
are
as
following
table.
FIGURE
1-3
3.5-inch
FDD
TABLE
1-3
3.5-inch
Floppy
Disk
Drive
Specifications
Item Specifications
Storage Capacity (kilobytes) 1000 (unformatted)
720 (formatted)
Number
of
Heads 2
Number
of
Track perSide
80
Track
to
Track
Access
(milliseconds) 3
Head Settling Time (milliseconds)
15
Track Density (tracks per inch)
135
Motor
Start-up Time (milliseconds) 500
Data Transfer Rate (kilobits per second) 250
Rotational
Speed
(revolutions per minute) 300
Recording
Method
MFM
(Modified
frequency
modulation)
1-6
1.4
3.5-IRCH
HARD
DISK DRIVE
The
hard
disk
drive
(HDD)
is
random
access
storage,
having
recording
capacity
of
40
Mbytes
(formatted).
This
is
equipped
with
the
storage
media
of
non-removable
3.5-inch
magnetic
disks
and
mini-winchester
type
magnetic
heads.
The
specifications
are
as
following
table.
FIGURE
1-4
3.5-inch
Hard
Disk
Drive
TABLE
1-4
3.5-inch
Hard
Disk
Drive
Specifications
Item Specifications
Storage Capacity (megabytes) 51.24
(unformatted)
40.30
(formatted)
Number
of
Heads 8
Number
of
Cylinders 615
Number
of
Tracks (tracks per cylinder) 8
Access
Time (milliseconds)
(minimum)
8
(average) 38
(maximum) 85
Recording Density (bits per inch) 14845
Track Density (tracks per inch) 834
Rotational Speed (revolutions per
minute)
3600
Recording
Method
MFM
(Modefied
Frequency
Modulation)
1-7
1.5
HARD
DISK
CONTROL
PCB
Hard
disk
control
PCB
(HOC)
is
accompanied
by
hard
disk
drive
(HOD)
and
connects
to
the
system
PCB
through
a
cable.
This
HOC
can
interface
the
HDD
to
the
system
PCB.
The
specifications
are
as
following
table.
FIGURE
1-5
Hard
Disk
Control
PCB
TABLE
1-5
Hard
Disk
Control
PCB
Specifications
Item Specifications
Encoding
method
MFM
(Modefied
Frequency
Modulation)
Data Transfer Rate (megabits
per
second)
maximum
5
Write
Precompensation
time
(nanoseconds)
12
Sectoring
Soft
1-8
1.5.1
Jumper
straps
The
Hard
disk
control
PCB
has
jumper
straps
which
are
PJ
3,
PJ
4
and
PJ
5.
Functions
of
the
jumper
straps
are
as
follows.
(1)
PJ
3
Not
used.
(2)
PJ
4
This
jumper
straps
select
recording
method
of
the
hard
disk
control
PCB.
The
following
table
shows
function.
TABLE
1-6
PJ
4
Jumper
Strap
Functions
No. Status Function
1-2 Short
MFM
method
3-4 Open
(
3)
PJ
5
This
jumper
straps
select
the
delay
time
of
the
hard
disk
control
PCB.
Usually
delay
time
is
selected
as
20
ns.
The
following
table
shows
function
of
the
jumper
straps.
TABLE
1-7
PJ
5
Jumper
Strap
Functions
No. Delay
time
select
1-2 10
ns
3-4
15
ns
5-6
20
ns
7-8 25
ns
9-10
30
ns
1-9
1
.6
KEYBOARD
The
keyboard
is
mounted
on
the
system
and
has
85
keys.
These
consist
of
54
standard
keys,
10
function
keys,
17
cursor
keys,
14
functional
keypads,
and
Fn
key.
The
keyboard
is
just
a
key
matrix
built
up
by
the
above
keys.
The
keyboard
is
connected
to
the
keyboard
controller
on
the
system
PCB
through
a
22-pin
flat
cable.
FIGURE
1-6
Keyboard
1-10