Toshiba T200 Manuale utente

T200/T200CS 1-1

1.1 Features

The Toshiba T200/T200CS Pen Computer uses extensive Large Scale Integration (LSI), and

Complementary Metal-Oxide Semiconductor (CMOS) technology to provide minimum size

and weight, low power usage and high reliability. These computers include the following:

❑Microprocessor

The T200/T200CS uses an SL Enhanced Intel 486DX2-40 microprocessor that

operates at 40 MHz and 3.3 volts.

❑Math co-processor

The T200/T200CS has a math co-processor stored in the i486DX2 microprocessor.

❑Cache memory

The T200/T200CS has an 8 KB cache memory stored in the i486DX2 microprocessor.

❑Disk storage

The T200/T200CS has an internal 1.8-inch IDE 80 Megabyte (MB) Hard Disk Drive

(HDD).

❑Memory

The T200/T200CS comes standard with 4 MB of CMOS RAM. This includes 640

KB of conventional memory and 3,328 KB of extended memory, which can be utilized

as expanded memory compatible with Lotus/Intel/Microsoft Expanded Memory

Specifications (LIM-EMS).

❑Display screen

The T200 has a 9.5-inch high resolution monochrome Liquid Crystal Display (LCD)

which displays 640x480 pixels with a 16-level gray scale, and an electromagnetic

derivative tablet (transreflective).

The T200CS has a 9.5-inch high resolution Supertwist Nematic (STN) color LCD

which displays 640x480 pixels and 256 colors, and an electromagnetic derivative

tablet.

The T200/T200CS internal display controller supports Video Graphics Array (VGA)

on the internal/external display and Super VGA (SVGA) on the external display.

❑Batteries

The T200/T200CS has three different batteries: a main battery, a backup battery, and

a Real Time Clock (RTC) battery.

1-2 T200/T200CS

❑Exp. memory slot

An optional 4, 8, or 16 MB memory card can be installed in the memory slot.

❑PC card slot (Type II, Type III)

The T200/T200CS has two PC card slots which support Personal Computer Memory

Card International Association (PCMCIA) standard version release 2.0 and MiNC

Toshiba modem card.

❑FDD port

An optional external 3.5-inch Floppy Disk Drive (FDD) supports 2HD (1.44 Mbytes)

floppy disks and 2DD (720 Kbytes) floppy disks.

❑Printer port

The T200/T200CS's Centronics-compatible printer interface port can be connected to

the printer through a parallel printer cable.

❑Serial port

The T200/T200CS has one 9-pin serial interface port.

❑Ext. keyboard port

The T200/T200CS has an external keyboard interface port for connection with a PS/2-

compatible keyboard.

❑Ext. monitor port

The T200/T200CS has an external monitor interface port for connection with an

analog VGA or SVGA display.

❑72-pin Expansion port

The T200/T200CS has a 72-pin Expansion port which enables connection of a 72-pin

Expansion connector. The Expansion port allows connection of a PS/2 keyboard,

external monitor, printer, serial I/O and optional 3.5-inch FDD.

❑Stylus

The T200/T200CS has one cordless stylus (pen), which is used to enter information

into the computer. The stylus does not need batteries.

T200/T200CS 1-3

The T200/T200CS Pen Computer is shown in Figure 1-1. Its system configuration is shown

in Figure 1-2.

Figure 1-1 T200/T200CS Pen Computer

Figure 1-2 T200/T200CS System Unit Configuration

1-4 T200/T200CS

1.2 System Unit Block Diagram

Figure 1-3 is a block diagram of the computer's system unit.

* These port signals also output to the 72-pin Expansion port.

Figure 1-3 Block Diagram

T200/T200CS 1-5

The computer's system board is composed of the following major components:

❑SL Enhanced i486DX2-40

❑Super Integration (SI) T9901, which stores the following components:

•Two Direct Memory Access Controllers (DMAC): 82C37

•Two Programmable Interrupt Controllers (PIC): 82C59

•One Programmable Interval Timer (PIT): 82C54

•One Floppy Disk Controller (FDC): TC8565

•Two Serial Input/Output Controllers (SIO): TC8570

•One Variable Frequency Oscillator (VFO): TC8568

•One I/O Controller

•One Printer Port Controller

•One Speaker Controller

❑A Real Time Clock (RTC)

One T9934 chip with 128 bytes of memory is used. Fourteen bytes of memory are

used for the calendar and clock and the remaining 114 bytes for system configuration

data.

OSC (X2) generates 32.768 KHz for RTC.

❑A Keyboard Controller (KBC)

One 80C42 chip is used. This KBC includes the keyboard interface controller and

controls the external keyboard.

❑The following memories:

Standard RAM: 4 MB

Cache memory: 8 KB (inside CPU)

BIOS ROM: 128 KB (96 KB are used)

This ROM contains Initial Reliability Test (IRT),

Basic Input/Output System (BIOS), and video BIOS.

Video RAM: 256 KB

Optional memory cards expand memory to a maximum of 20 MB.

❑VGA display controller (WD90C24A)

This controller controls internal VGA display and external SVGA compatible display.

❑Clock Generator receives 14.31818 MHz (X3) and generates the following frequen-

cies:

•20 MHz for the CPU (CPU operates at 40MHz.)

•14.7477 MHz for the COM

•24 MHz for the FDC and VFO

•16 MHz is used for the System Controller GA

•14.31818 MHz is used for the T9901 (SI)

1-6 T200/T200CS

❑Gate Arrays

System Controller Gate Array

This gate array has the following functions:

•CPU Controller

•Memory Controller

-DRAM Controller

-Compatible Bus Interface Controller

•SMI Controller

•VL Bus Controller

•Bus Controller

-Compatible Bus Interface Controller

-Compatible Access Controller

-DMA Controller

-I/O Controller

•Address Latch Controller

-32-Bit to 16-Bit Controller

-Address Latch

-DMA Address Generator

-Refresh Address Generator

•I/O Register

-Compatible I/O Port

-Saving the data of the Register (in resume) Controller

-Toshiba Special Register

•Processing Speed Controller

•Data Bus Change Controller

•Data Latch

PCMCIA Controller Gate Array

This gate array has the following functions:

•Memory Card Controller

-PCMCIA IC Card Controller

-Toshiba Modem Card Controller

T200/T200CS 1-7

SMI Controller Gate Array

This gate array has the following functions:

•Tablet Controller

-Tablet Microprocessor Communication Controller

-SMI Controller

•Others

-Contrast Adjust PWM Controller

1-8 T200/T200CS

1.3 Optional External 3.5-inch Floppy Disk Drive

The computer's optional 3.5-inch Floppy Disk Drive (FDD) is a thin, high-performance

reliable drive that supports 720-KB (formatted) 2DD and 1.44-MB (formatted) 2HD 3.5-inch

floppy disks.

The computer's FDD is shown in Figure 1-4. The specifications for the FDD are provided in

Table 1-1.

Figure 1-4 3.5-Inch FDD

Table 1-1 3.5-Inch FDD Specifications

Item 2-MB mode 1-MB mode

Storage capacity (KB)

Unformatted 2,000 1,000

Formatted 1,474 737

Number of heads 2 2

Number of cylinders 80 80

Access time (ms)

Track to track 3 3

Average 181 181

Head settling time 15 15

Recording track density (tpi) 135 135

Data transfer rate (Kbps) 500 250

Rotation speed (rpm) 300 300

Recording method Modified Frequency Modulation (MFM)

T200/T200CS 1-9

1.4 1.8-inch Hard Disk Drive

The computer’s 80-MB (formatted) Hard Disk Drive (HDD) is a random access non-volatile

storage device. It has a non-removable 1.8-inch magnetic disk and mini-winchester type

magnetic heads.

The HDD is shown in Figure 1-5. Specifications for the HDD are provided in Table 1-2.

Figure 1-5 1.8-Inch HDD

Table 1-2 1.8-Inch HDD Specifications

Item 80 MB

(ZA1094)

Storage capacity (MB)

Formatted 85.0

Number of disks 2

Data heads 3

Data surfaces 3

Tracks per surface 2,750

Sectors per track 20

Bytes per sector 512

Access time (ms)

Track to track 8

Average 18

Maximum 35

Rotation speed (rpm) 3,571

Data transfer rate (bps)

To/from media 2.5M

Interleave 1:1

Recording method 1-7 RLL

1-10 T200/T200CS

1.5 Monochrome LCD

The monochrome LCD is composed of an LCD module, a Fluorescent Lamp (FL), and an FL

inverter board.

1.5.1 Monochrome LCD Module

The computer's monochrome LCD supports 640 x 480 pixels with a video controller and 16

levels of gray. The video controller includes the functions of the VGA and SVGA for external

display.

The LCD receives vertical and horizontal synchronizing signals, 8-bit data signals (4-bit upper

block data signal and 4-bit lower block data signal), and shift clock for data transmission. All

signals are CMOS-level compatible.

The sidelit LCD is shown in Figure 1-6 and its specifications are provided in Table 1-3.

Figure 1-6 Monochrome LCD

Table 1-3 Monochrome LCD Specifications

Item Specifications

Number of dots (dots) 640 x 480

Dot pitch (mm) 0.27 (W) x 0.27 (H)

Display area (mm) 196 (W) x 147.6 (H)

Contrast 10:1 (typically)

FL current (mA) 5.5 (r.m.s.)

FL frequency (KHz) 39

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