Dimensions: T1850/T1850 - 11.8"W x 8.4"D x 2.24"H
T1850C - 11.8"W x 8.4"D x 2.3"H
Weight: 6.85 lbs. with battery pack
Voltage: T1800/T1850 - 15VDC, 1.4A (DC in port on back of computer)
T1850C - 15VDC, 2.0A (DC in port on back of computer)
Universal AC adapter - 100-240 VAC 50-60 Hz
Batteries: Removable rechargeable 9.6V, 2800mAH NiCd battery pack
(unlocks on left side of computer)
Internal NiCd backup battery for memory backup, NiCd RTC battery
for real time clock
CPU: T1800 - i386SX-20 (20/10Mhz), i387SX-20 math coprocessor socket
(located on bottom of unit)
T1850/T1850C - i386SX-25 (25/12.5Mhz), i387SX-25 math
coprocessor socket (located on bottom of unit)
RAM memory: T1800 - 2MB standard (640KB conventional; 1.384MB extended
or HardRAM) Memory expandable up to 10MB via one credit card
style memory slot when optional 2MB, 4MB, or 8MB card is added
T1850/T1850C - 4MB standard (640KB conventional; 3.384MB
extended or HardRAM) Memory expandable up to 12MB via one
credit card style memory slot when optional 2MB, 4MB, or
8MB card is added
Number of keys: 82
Keyboard type: IBM PS/2 101-key keyboard compatible
Drives: One 1.44MB 3.5" floppy disk drive
T1800 - 60MB hard disk drive
T1850/T1850C - 80MB, or 120MB hard disk drive
Lights: Power/Speed; Caps lock; Overlay; Numlock; Disk in Use;
Battery; DC IN
Features: MaxTimeTM power management capabilities including APM drivers
AutoResume electronic bookmark
AutoSave safety data retrieval system
HardRAM
CPU sleep mode
Automatic display and Hard drive power down
Low battery warning light and audible alarm
Intelligent power supply with battery "gas gauge"
BIOS in Flash ROM
Power on Password
Pop-up window
Shadow BIOS ROM
U.S. and International warranty (requires enrollment)
Product Support
Toshiba Exceptional Care program (requires enrollment)
Operating system included: Toshiba MS-DOS 5.0 preinstalled on all
models
Software Compatibility
Compatible with software written for the IBM PC/XT/AT using VGA, EGA,
or CGA resolution graphics modes
Interfaces
VGA color video port (located on back of computer)
RS-232-C serial port (located on back of computer)
Parallel printer/external diskette or tape drive port (located
on back of computer)
Numeric keypad/101-key keyboard adapter port (located on
right side of computer)
Toshiba "E" form factor internal modem slot
PS/2 mouse port (located on right side of computer)
Credit card style memory slot (located on front of computer)
Kensington cable lock port (located on right side of computer)
Display area: 7.7"W x 5.8"H; 9.5" diagonal
Resolution: 640 x 480
Dot pitch: 0.3mm x 0.3mm
Aspect ratio: 1 : 1
Contrast: 17 : 1
Gray scales: 16 gray scales in 640 x 480 resolution, 64 gray scales
in 320 x 200 resolution
Fluorescent Sidelit Color STN LCD - T1850C
Display area: 7.7"W x 5.8"H; 9.5" diagonal
Resolution: 640 x 480
Dot pitch: 0.3mm x 0.3mm
Contrast: 10 : 1
Colors: 16 colors in 640 x 480 resolution; 256 colors out of a palette
of 262,144 in 320 x 200 resolution
2.5" 60MB Hard Disk Drive - T1800
Conner Peripherals HDD: CP2064
Interface: IDE
Average access time 19ms
Recording method: 1-7 RLL
2.5" 80MB Hard Disk Drive - T1850/T1850C
Toshiba HDD: MK2024FC
Interface: IDE
Average access time 19ms
Recording method: 1-7 RLL
2.5" 120MB Hard Disk Drive - T1850/T1850C
Toshiba HDD: MK2124FC
Interface: IDE
Average access time 17ms
Recording method: 1-7 RLL
Soft Switches
1) Change CPU speed
Fn + PgUp T1800 - 20MHz CPU Speed; T1850/T1850C - 25MHz CPU Speed
Fn + PgDn T1800 - 10MHz CPU Speed; T1850/T1850C - 12.5MHz CPU Speed
2) Pop-up window
Fn + Esc Toggles pop-up window
3) Keypad overlay
Fn + F10 Toggles keypad overlay
Fn + F11 Num Lock
Fn + F12 Scroll Lock
4) FN key
Fn + CTRL Simulate IBM enhanced keyboard Right Ctrl
Fn + ALT Simulate IBM enhanced keyboard Right Alt
Fn + enter Simulate IBM enhanced keyboard numeric keypad Enter
Hardware Switches and Controls
1) Power on/off
Located on left side of computer
2) Reset
Located on left side of computer
3) LCD contrast dial
Located on right side of display
Options and Extra Accessories
PC-PA2000U 2MB memory card
PC-PA2001U 4MB memory card
PC-PA2002U 8MB memory card
PC-T24D/X 2400 bps Hayes compatible dedicated built-in Cellular
capable modem w/enhanced protocol (MNP5, V.42 bis)
PC-TCL24A Audiovox AXSYS cellular connection for use with
T24D/X modem
PC-TCL24M Motorola AXSYS cellular connection for use with
T24D/X modem
PC-TCL24N NEC AXSYS cellular connection for use with T24D/X
modem
PC-TCL24U Uniden AXSYS cellular connection for use with
T24D/X modem
PC-T24D/F 2400bps Data/9600bps FAX modem
PC-PA7225U 5.25" 360KB external FDD with 18VDC adapter
PC-PA2410U Battery pack - 2800 mAH
PC-PA2440L Battery pack recharger with AC adapter
PC-PA2409U T1800/T1850 - Universal AC adapter
PC-PA2411U T1850C - Universal AC adapter
PC-PA2450L T1800/T1850 - Auto adapter (20 watt)
PC-PA2455L T1850C - Auto addapter (30 watt)
PC-PA801L Statpower universal auto adapter (requires Universal
AC adapter)
PC-PA7354E 17-key numeric keypad
PC-PA8718U 101-key keyboard adapter with external power
supply
PC-PA877L Fabric carrying case
PC-PA1000L Leather carrying case
PC-PA1050L Leather attache
PC13-PA874L Executive leather portfolio
PR-PA2750U ExpressWriter 201 portable printer
PC-SW013 Toshiba MS-DOS 5.0 (includes diskettes and manuals)
System Memory Map - T1800
Space
Address range (Kilobytes) Used For:
==========================================================
'000000' 640 Conventional
'09FFFF' memory
----------------------------------------------------------
'0A0000' 128 Video RAM
'0BFFFF'
----------------------------------------------------------
'0C0000' 32 VGA BIOS ROM
'0C7FFF'
----------------------------------------------------------
'0C8000' 96 Reserved
'0DFFFF'
----------------------------------------------------------
'0E0000' 32 HardRAM window
'0E7FFF'
----------------------------------------------------------
'0E8000' 32 Backup RAM
'0EFFFF'
----------------------------------------------------------
'0F0000' 64 System BIOS ROM
'0FFFFF'
----------------------------------------------------------
'100000' 1,408 System working
'25FFFF' memory
----------------------------------------------------------
'260000' 8,192 Optional working memory
'A5FFFF'
----------------------------------------------------------
'A60000' Reserved
'FEFFFF'
----------------------------------------------------------
'FF0000' 64 System BIOS ROM
'FFFFFF' (Duplicated)
----------------------------------------------------------
System Memory Map - T1850/T1850C
Space
Address range (Kilobytes) Used For:
==========================================================
'00000000' 640 Conventional
'0009FFFF' memory
----------------------------------------------------------
'000A0000' 128 Video RAM
'000BFFFF'
----------------------------------------------------------
'000C0000' 32 VGA BIOS ROM
'000C7FFF'
----------------------------------------------------------
'000C8000' 96 Reserved
'000DFFFF'
----------------------------------------------------------
'000E0000' 32 HardRAM window
'000E7FFF'
----------------------------------------------------------
'000E8000' 32 Backup RAM
'000EFFFF'
----------------------------------------------------------
'000F0000' 64 System BIOS ROM
'000FFFFF'
----------------------------------------------------------
'00100000' 3,456 System working
'0042FFFF' memory
----------------------------------------------------------
'00430000' 10,624 Optional memory cards
'0102FFFF'
----------------------------------------------------------
'01030000' Reserved
'FFFEFFFF'
----------------------------------------------------------
'FFFF0000' 64 System BIOS ROM
'FFFFFFFF' (Duplicated)
----------------------------------------------------------
Interrupts
Interrupt Level Assigned To:
-----------------------------------------------------------
NMI I/O Channel check or power off
0 Timer
1 Keyboard
2 PIC 2
1 3 COM2
4 COM1
5 Reserved
6 Floppy Disk
7 Printer 1
-----------------------------------------------------------
8 Real Time Clock
9 Software Redirect to INT 0Ah
2 10 Reserved
11 Reserved
12 PS/2 Mouse
13 Numeric Data Processor
14 Hard Disk
15 Reserved
I/O Port Assignment
Port Address
From / To Device / Function
------------------------------------------------------
'000' / '01F' 8237 : DMA Controller 1
'020' / '03F' 8259 : PIC 1
'040' / '05F' 8254 : PIT
'060' / '06F' KBC
'070' / '07F' RTC
'080' / '09F' DMA Page Register
'0A0' / '0BF' 8259 : PIC 2
'0C0' / '0DF' 8237 : DMA Controller 2
'0E0' / '0EF' Special Register
'0F0' / '0FF' NDP Error Clear Port
'100' / '1EF' (Not used)
'1F0' / '1FF' HDC Port
'200' / '207' (Not used)
'2F8' / '2FF' Serial Port (COM 2)
'300' / '377' (Not used)
'378' / '37F' Parallel Printer Port
'380' / '3AF' (Not used)
'3B0' / '3DF' VGA Port
'3E0' / '3EF' (Not Used)
'3F0' / '3F7' FDC, FDD Interface Port
'3F8' / '3FF' Serial Port (COM1)
