General Information Model number: PA1021U (FCC ID# CJ6UN760) Dimensions: 12.2"W x 10"D x 1.9"H Weight: 6.9 lbs. including battery Voltage: Computer DC input - 18VDC, 1.1A Universal AC adapter - 100-240 VAC 50-60 Hz Battery: Removable rechargeable NiCD battery pack CPU: 80C286 (12/6MHz); 80C287-12 coprocessor socket RAM memory: 1MB standard (640KB conventional; 384KB LIM-EMS 4.0, extended, or HardRAM)Memory expandable up to 9MB via one credit card style memory slot when optional 1MB,2MB, 4MB, or 8MB card is added Video RAM: 256KB Number of keys: 86 Keyboard type: 101-key keyboard compatible Drives: One 1.44MB 3.5" floppy disk driveOne 40MB hard disk drive Standard features: AutoResume Hard RAM Auto display and hard drive shutdown CPU sleep mode,Intelligent power supply with battery "gas gauge" Operating system included: Toshiba MS-DOS 4.01 Software Compatibility Compatible with software written for the IBM PC/XT/AT using VGA, EGA, CGA, or T3100/AT&T 6300 640 x 400 high resolution graphics mode Interfaces VGA color video port RS-232-C serial port Parallel printer/external diskette or tape drive port Numeric keypad/101-key keyboard adapter port Built-in modem slot - "D" form factor 100 pin expansion interface connector Credit card style memory slot Fluorescent Sidelit Supertwist LCD Display Display area: 6.8"W x 5.1"H; 8.5" diagonal Resolution: 640 x 480 Aspect ratio: 1 : 1 Contrast ratio: 15 : 1 Gray scales: 16 gray scales 2.5" 40MB Hard Disk Drive JVC HDD JD-E2850P Interface: IDE Average access time: 23ms Recording method: 2-7 RLL Soft Switches 1) Change CPU speed Fn + PgUp 12MHz CPU Speed Fn + PgDn 6MHz CPU Speed 2) Pop-up window Fn + Esc Toggles pop-up window 3) Keypad overlay Fn + NumLock Toggles keypad overlay 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 brightness and contrast dials Located on right side of computer Environmental Specifications 1) Operating condition Ambient temperature: 41 to 95 degrees F. 5 to 35 degrees C. Relative Humidity: 20% to 80% non-condensing Altitude (from sea level): 0 to 12,000 ft. (0 to 3,657 meters) 2) Non-Operating condition Ambient temperature: -4 to 140 degrees F. -20 to 60 degrees C. Relative Humidity: 5% to 90% non-condensing Altitude (from sea level): 40,000 ft. (12,192 meters) max. 3) Wet bulb temperature condition Ambient temperature: 79 degrees F. (26 degrees C.) maximum Options and Extra Accessories PC18-PA8316U 1MB memory card (no longer manufactured) PC18-PA8317U 2MB memory card (no longer manufactured) PC-PA2000U 2MB memory card (no longer manufactured) PC-PA2001U 4MB memory card (no longer manufactured) PC-PA2002U 8MB memory card (no longer manufactured) PC-T24D 2400 bps Hayes compatible dedicated built-in modem (Bell or CCITT) (no longer manufactured) PC-T24D/F 2400bps data/9600bps send/receive FAX built-in modem PC-T144D/F 14400 bps send/receive FAX built-in modem (no longer manufactured) PC-T24D/X or PC-T24D/X2 2400 bps Hayes compatible dedicated built-in modem w/enhanced protocol (MNP5 V.42 bis)(both no longer manufactured) PC-TCL24A Audiovox Axsys cellular connection for use with T24D/X modem (no longer manufactured) PC-TCL24M Motorola Axsys cellular connection for use with T24D/X modem (no longer manufactured) PC-TCL24N NEC Axsys cellular connection for use with T24D/X modem (no longer manufactured) PC-TCL24U Uniden Axsys cellular connection for use with T24D/X modem (no longer manufactured) PC-PA7225U 5.25" 360KB external FDD with 18VDC adapter PC-PA2403E Battery pack - 1700 mAh PC18-PA8726U Battery pack recharger with AC adapter PC-PA2400U Universal AC adapter PC-PA750L Auto adapter - 12 VAC (no longer manufactured) PC-PA801L Statpower Prowatt 125 auto adapter PC-PA7354E 17-key numeric keypad PC-PA8718U 101-key keyboard adapter with external power supply PC-PA722L TD80 external tape backup drive (no longer manufactured) PC-PA8600U Desk Station ll (no longer manufactured) PC18-PA875L Fabric carrying case (no longer manufactured) PC-PA1000L Leather carrying case (no longer manufactured) PC-PA1050L Leather attache case PC13-PA874L Executive leather portfolio (no longer manufactured) PR-PA2750U ExpressWriter 201 portable printer (no longer manufactured) PC-SW015 Toshiba MS-DOS 5.0 (no longer manufactured) PC-SW007 Toshiba MS-DOS 4.01 (no longer manufactured) PC-SW008 Toshiba MS-DOS 3.30 (no longer manufactured) PC-SW004 Toshiba BASIC 3.30 (no longer manufactured) PC-SW012 Toshiba MS OS/2 v1.21 operating system (no longer manufactured) System Memory Map Address range Space (Kilobytes) Used For: '000000'09FFFF' 640 System working memory '0A0000'0BFFFF' 128 Video RAM '0C0000''0C7FFF' (0) 32 VGA BIOS ROM '0C8000''0DFFFF' (128) 96 EMS window '0E0000''0E7FFF' 32 HardRAM window '0E8000''0EFFFF' 32 Backup RAM '0F0000''0FFFFF' 64 System BIOS ROM '100000''15FFFF' 384 System working memory '160000''95FFFF' 8,192 Optional memory cards '960000''FEFFFF' 6,720 Memory expansion in expansion port 'FF0000''FFFFFF' 64 System BIOS ROM (Duplicated) Interrupts Interrupt Level Assigned To: -- NMI RAM Parity Error, I/O Channel Error 0 Timer 1 Keyboard 2 PIC 2 for level 8 to 15 1 3 Secondary Communications (COM 2) 4 Primary Communications (COM 1) 5 PRT 2 6 FDC 7 PRT 1 8 RTC 9 Software Redirect to INT '0A' 2 10 (Reserved) 11 (Reserved) 12 COM 3 13 80C287 14 HDC 15 (Reserved) I/O Port Assignment Port Address From / To Device / Function '000' / '01F' 82C37 : DMA Controller 1 '020' / '03F' 82C59 : PIC 1 '040' / '05F' 82C54 : Timer '060' / '06F' 80C42 : KBC '070' NMI '070' / '07F' RTC '080' / '09F' DMA Page Register '0A0' / '0BF' 82C59 : PIC 2 '0C0' / '0DF' 82C37 : DMA Controller 2 '0E0' / '0EF' Special Register '0F0' / '0F7' 80C287 : NPU '100' / '1EF' VGA '1F0' / '1FF' HDC '200' / '207' Game I/O '208' / '20F' LIM-EMS Set 0 '210' / '217' Expansion Unit '218' / '21F' LIM-EMS Set 1 '220' / '257' (Not Used) '258' / '25F' LIM-EMS Set 2 '260' / '267' (Not Used) '268' / '26F' LIM-EMS Set 3 '270' / '277' (Not Used) '278' / '27F' Parallel PRT 2 '280' / '2A7' (Not Used) '2A8' / '2AF' Reserved for LIM-EMS '2B0' / '2B7' (Not Used) '2B8' / '2BF' Reserved for LIM-EMS '2C0' / '2DF' (Not Used) '2E0' / '2E7' (Not Used) '2E8' / '2EF' Reserved for LIM-EMS '2F0' / '2F7' (Not Used) '2F8' / '2FF' Serial Port 2 (COM2) '300' / '31F' Prototype card '320' / '32F' XT type HDC '330' / '337' (Not Used) '338' / '33F' (COM 3) '340' / '377' (Not Used) '378' / '37F' Parallel PRT 1 '380' / '38F' SDLC, Bisync 2 '390' / '39F' (Not Used) '3A0' / '3AF' Bisync 1 '3B0' / '3BF' MDA and PRT '3C0' / '3DF' CGA, EGA, VGA '3E0' / '3E7' (Not Used) '3E8' / '3E7' (COM3) '3F0' / '3F7' FDC '3F8' / '3FF' Serial Port 1 (COM1)