Toshiba Satellite 100CS User manual

100CS 1-1
1.1 Features
The 100CS is one of the lightest and most advanced portable computers available. Utilizing
advanced technology and high-speed components, the computer offers multimedia functions,
excellent display legibility, battery operation, and IBM PC/AT compatibility. The unit con-
sists of the following features:
❑Microprocessor
A Pentium ®processor with Voltage Reduction Technology (VRT) that operates at 75
MHz and 3.3/2.9 volts.
❑Memory
Standard 8 MB of CMOS RAM. This includes 640 KB of conventional memory and
7360 KB of extended memory.
❑Hard Disk Drive (HDD)
An internal 528 million byte (520MB) HDD.
❑Floppy Disk Drive (FDD)
A 3.5-inch FDD supports 2HD (1.44 MB) floppy disks and 2DD (720 KB) floppy
disks.
❑Display
A 10.4-inch Dual-scan Supertwist Nematic (DSTN) color LCD with 640 x 480 pixels.
The built-in display controller supports 640 x 480 resolution with 64k colors capability
on the internal LCD and up to 1024 x 768 resolution with 256 colors on an external
CRT.
❑Keyboard
An easy-to-use 82/84-key keyboard provides a numeric keypad overlay for fast nu-
meric data entry or for cursor and page control. The keyboard supports software that
uses a 101- or 102-key enhanced keyboard.
❑Batteries
Three different batteries: a main battery, a backup battery (for memory backup), and
an RTC battery (for Real Time Clock).
❑Expansion memory slot
An optional 8, 16, or 32 MB memory module can be installed in the memory slot.

1-2 100CS
❑Parallel port
This port can be used to connect a Centronics compatible printer or other parallel
device. The port supports ECP (Extended Capabilities Port) conforming to
IEEE·1284.
❑Serial port (9-pin)
The serial controller is 16550UART compatible. This port can be used to connect such
serial devices as a serial printer, serial mouse, or external modem.
❑RGB port
The female, 15-pin, D-shell connector can be connected to an external SVGA monitor.
❑Ext. Keyboard/Mouse port
Either a PS/2 compatible keyboard or a PS/2 compatible mouse can be connected to
this port. The computer automatically recognizes which device is connected.
❑PC card slot
A PC card slot supports up to two Personal Computer Memory Card International
Association (PCMCIA) standard version release 2.0 cards. The upper and lower slots
can each accommodate one Type II (5.0 mm) card, or the lower slot can accommo-
date one Type III (10.5 mm) card when the upper slot is empty.
❑Enhanced port replicator port
This port enables connection of an enhanced port replicator. The enhanced port
replicator has two PC card slots (Type III), and expands connections to the following
devices: PS/2 keyboard, PS/2 mouse, serial port, parallel port, external CRT, AC-in,
and AC-out. The NoteDock does not support the following ports: floppy disk, audio
in - audio out, joystick, and selectable ID.
❑AccuPoint
A pointer control stick, located in the center of the keyboard, provides convenient
control of the cursor without requiring desk space for a mouse.

100CS 1-3
The 100CS Personal Computer is shown in figure 1-1.
Figure 1-1 100CS personal computer
The system configuration is shown in figure 1-2.
Figure 1-2 System unit configuration

1-4 100CS
1.2 System Unit Block Diagram
Figure 1-3 is a block diagram of the system unit.
Figure 1-3 System board block diagram

100CS 1-5
The system board is composed of the following major components:
❑Microprocessor
One Pentium processor with VRT 64-bit microprocessor
Pentium processor operates at 75 MHz and 3.3/2.9 volts
The math co-processor and 16KB cache memory are integrated into Pentium
❑Standard RAM
8 MB, four 1Mx16-bit chips
3.3 volt operation
No parity bit
Access time 70 ns
Data transfer is 64-bit width
EDO (extended data output) supported
❑BIOS ROM (Flash EEPROM)
128 KB (one 128Kx8-bit chip) memory
64 KB in the ROM are used for system BIOS
48 KB in the ROM are used for VGA BIOS
16 KB in the ROM are reserved
Access time 150 ns
Data transfer is 8-bit width
❑Video RAM
1 MB (Two 256Kx16-bit DRAM)
5 volt operation
❑Optional memory
One expansion memory slot is available for 8, 16, and 32 MB memory modules, which
consist of 1 MBx16-bit chips
Total maximum memory size is 40 MB (if a 32 MB memory module is installed)
3.3 volt operation
No parity bit
Access time 60 ns
Data transfer is 64-bit width
EDO (extended data output) supported
❑One super integration (SI)
The following components:
- Two DMACs 82C37 equivalent
- Two PICs 82C59 equivalent
- Two SIOs 16550 equivalent (One SIO is not used)
- Two UARTs 16550 equivalent
- One PIT 82C54 equivalent
- One FDC TC8565 equivalent
- One VFO TC8568 equivalent
- One I/O port decoder
- One SIO port control
- One printer port control supported ECP
- One FDD control
- One speaker control
- One power communication control

1-6 100CS
❑System Controller Gate Array (SCPCNT-GA)
This gate array has the following functions:
•CPU control
-SMI control
-CPU clock control
•Memory control
-64-bit bus memory control
- 32-bit bus memory control
•Bus control
-64-bit data bus <==>32-bit data bus
-32-bit local bus control
•Address latch control
•I/O register control
•Processing speed control
❑ISA Bus Controller Gate Array (SISCNT3-GA)
This gate array has the following functions:
•Bus control
-32-bit data bus <==> 16-bit data bus
-ISA bus interface control
-ISA bus access control
-DMAC control
-DMA address generation
-I/O control
-Suspend/Resume sequence
•Memory control
-ISA bus interface control
-Refresh address generation
•I/O register control
•Suspend/Resume sequence
❑PC Card Controller Gate Array (PCMCIA CNT-GA)
This gate array has the following functions:
•PCMCIA memory card control
•PCMCIA I/O card control
❑I/O Controller Gate Array (IOCNT-GA)
This gate array has the following functions:
•Internal Communication controller
-KBC, main CPU communication register file
-KBC interrupt controller
-KBC communication controller
- I2C bus control (Not used)
•Others
-Speaker volume adjust PWM control
-Sound board interface (Not used)
-BIOS-ROM interface
-SMI control
-IrDA (SIR) control (Not used)

100CS 1-7
❑Video Controller
C&T F65548 is used.
This video controller controls internal DSTN color LCD and external SVGA compat-
ible CRT.
❑Keyboard Controller (KBC)
One M38802M4 chip is used.
This KBC includes the keyboard scan controller and keyboard interface controller.
The KBC controls the internal keyboard, external keyboard, PS/2 mouse.
❑Real Time Clock (RTC)
One T9934 chip is used.
The T9934 has 128 bytes of memory. Fourteen bytes of memory are used for the
calendar and clock. The remaining 114 bytes are used for the system configuration
data.

1-8 100CS
1.3 3.5-inch Floppy Disk Drive
The 3.5-inch 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 FDD is shown in figure 1-4.
Figure 1-4 3.5-inch FDD
The specifications for the FDD are listed in table 1-1.
Table 1-1 3.5-inch FDD specifications
Item 2-MB mode 1-MB mode
Storage capacity (KB)
Unformatted 2,000 *1 1,000 *2
Formatted 1,311 655
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)
*1:32 sector/track (256bytes per sector)
*2:16 sector/track (256bytes per sector)

100CS 1-9
1.4 2.5-inch Hard Disk Drive
The HDD is a random access non-volatile storage device. It has a non-removable 2.5-inch
magnetic disk and mini-winchester type magnetic heads.
The computer supports the 520 MB.
The HDD is shown in figure 1-5.
Figure 1-5 2.5inch HDD
Specifications for the HDD are listed in table 1-2.
Table 1-2 2.5-inch HDD specifications
Items Toshiba MK1924FCV IBM DBOA-2528
Storage capacity (million byte)
Formatted 528 528
Number of disks 2 2
Data heads 4 3
Data surfaces 4 4
Bytes per sector 512 512
Rotation speed (rpm) 4200 4000
Recording method 8-9 RLL 1-7 RLL

1-10 100CS
1.5 Keyboard
The 82-(USA) or 84-(European) keyboard is mounted on the computer’s system unit. The
keyboard is connected to the keyboard controller on the system board through a 25-pin flat
cable. The computer pointer control stick, located in the center of the keyboard, provides
convenient control of the cursor without requiring desk space for a mouse. The keyboard is
shown in figure 1-6.
See Appendix E for optional keyboard configurations.
Figure 1-6 Keyboard