T3100 and T3100/20 (No longer manufactured) General Information Model number: T3100 10MB - PA8037U T3100/20 20MB - PA8038U Dimensions: 12.2"W x 3.1"H x 14.2"D Weight: 15 lbs. Voltage: 115 VAC (104-127 VAC), 1.5 A 230 VAC (207-253 VAC) switch selectable Frequency: 50/60 Cycles (49-61 cycles) CPU: 80286-8 (8/4.77MHz) RAM memory: 640KB (Conventional) Memory expandable up to 3.6MB when optional 2MB extended and 1MB expanded memory cards are added Number of keys: 81 Keyboard type: PC Drives: One 720KB 3.5" floppy disk drive One 10MB or one 20MB hard disk drive Operating system: Toshiba MS-DOS 2.11 shipped with earlier models Toshiba MS-DOS 3.2 shipped with later models Software Compatibility Compatible with software written for the IBM PC/XT/AT using CGA or T3100/AT&T 6300 640 x 400 high resolution graphics mode Interfaces - RGB (CGA) color video port - RS-232-C serial port - Parallel printer/external diskette - Numeric keypad port - Toshiba proprietary memory slot - Toshiba proprietary "A" form factor expansion slot Display Display type: Orange gas plasma Display area: 7.5"W x 5.7"H; 9.5" diagonal Resolution: 640 x 400 Contrast: 5 : 1 3.5" 10MB Hard Disk Drive (T3100) JVC : JD-3812MOTO Number of heads: 2 Number of cylinders: 612 plus 4 spaces Average access time: 100ms Recording method: MFM TEST/TEST3 setup type: 1 3.5" 20MB Hard Disk Drive (T3100/20) JVC : JD3824ROTO Number of heads: 4 Number of cylinders: 612 Average access time: 78ms Recording method: 2-7 RLL TEST/TEST3 setup type: 2 Soft Switches 1) Change CPU speed Ctrl + Alt + PgUp 8MHz CPU speed Ctrl + Alt + PgDn 4.77MHz CPU speed 2) Display select Ctrl + Alt + End External display Ctrl + Alt + Home Plasma display 3) Keypad overlay Alt + NumLock Toggles keypad overlay Hardware Switches and Controls 1) Power on/off Located on back of computer 2) A/B/PRT switch - Located on left side of computer - With switch set to "A", external FDD port is accessed as drive A; internal 3.5" FDD as drive B. - With switch set to "B", external FDD port is accessed as drive B; internal 3.5" FDD as drive A. - Switch is set to "PRT" for parallel printer output. - Computer must be re-booted for switch change to take effect. 3) 6 DIP Switch bank Located on back of computer Default from factory - all switches down Switch Setting Description 1 OFF American display font ON North European display font 2 OFF 640K conventional RAM ON 512K conventional RAM 3 OFF Internal Display Controller ON External Display Controller 4 OFF Printer Port / FDD ON Bidirectional parallel I/O 5 OFF Single dot low intensity, Double dot hi intensity ON Double dot low intensity, Single dot hi intensity 6 OFF Serial port is COM1, internal modem is COM2 ON Serial port is COM2, internal modem is COM1 4) 110VAC or 220VAC Move metal plate located on back of computer to appropriate voltage. Default setting in USA shows 115AC with 230AC covered by plate. Toshiba High Resolution 640 x 400 mode a) T3100 and T3100/20 To switch to 640 x 400 graphics mode use the following routine. Mov AX,0074 Int 10 b) AT&T 6300 or Olivetti Mapped just like the T3100 BIOS ROM font starts at FCA0:0000. To look for the video call in a program driver installed as an AT&T 6300, look for: Mov AX,0040 B8 40 00 CD 10 Int 10 -or- Mov AL,40 B0 40 CD 10 Int 10 -Then change 40 to 74. c) Sigma Color 400 Mapped just like the T3100, but this is a 16 color monitor. To look for the video call in a program driver installed as a Sigma Color 400, look for: Mov AX,0042 B8 42 00 CD 10 Int 10 -Then change 42 to 74. Options and Extra Accessories PC-PA7139U 1MB LIM-EMS 3.2 memory Card (Toshiba expansion slot) PC3-PA7135E 2MB extended memory module PC-PA7225U 5.25" 360KB external FDD with 18VDC adapter PC-PA7310U Expansion chassis & cable (requires expansion interface card) PC-PA7313E Expansion interface card (Toshiba expansion slot) PC-PA7367E Floppy Link to 5.25" desktop diskette drive PC-PA7438EB 300/1200 bps Hayes compatible Toshiba exp. slot modem (no longer manufactured) PC-T24A 2400 bps Hayes compatible Toshiba exp. slot modem w/serial port (no longer manufactured) PC3-PA7353E 15-key numeric keypad (no longer manufactured) PC-PA5462U ToshibaLAN 8/16 bit Ethernet card & external AC adapter (no longer manufactured) PC-PA8721E Fabric carrying case PC-PA8722E Leather carrying case (no longer manufactured) PR-PA2750U ExpressWriter 201 portable printer PC-SW008 MS-DOS 3.30 (includes diskettes and manual) PC-SW007 MS-DOS 4.01 (includes diskettes and manuals) PC-SW004 Toshiba BASIC 3.30 (includes diskette and manual) System Memory Map Space Address range (Kilobytes) Used For: ----------------------------------------------------------- '000000' 640 System working '09FFFF' memory (Conventional) ----------------------------------------------------------- '0A0000' 96 Reserved for graphic '0B7FFF' display buffer ----------------------------------------------------------- '0B8000' 32 Video RAM '0BFFFF' ----------------------------------------------------------- '0C0000' 64 Reserved for hardware '0DFFFF' on option boards ----------------------------------------------------------- '0E0000' 64 Duplicated assignment '0EFFFF' at 'FE0000' ----------------------------------------------------------- '0F0000' 64 Duplicated assignment '0FFFFF' at 'FF0000' ----------------------------------------------------------- '100000' 15,232 Memory expandable 'FDFFFF' with memory card, or memory expansion adapters in exp. box ----------------------------------------------------------- 'FE0000' 64 Reserved ROM 'FEFFFF' ----------------------------------------------------------- 'FF0000' 64 System ROM 'FFFFFF' ----------------------------------------------------------- Interrupts Interrupt Level Assigned To: NMI RAM parity error; I/O channel error 0 Timer 1 Keyboard 2 Interrupt controller 2 for levels 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 (Reserved) 13 (Reserved) 14 HDC 15 (Reserved) I/O Port Assignment Port Address From / To Device / Function ----------------------------------------------- '000' / '01F' 82C37 : DMA Controller 1 '020' / '03F' 82C59 : Interrupt Controller 1 '040' / '05F' 82C54 : Timer '060' / '06F' 8042 : Keyboard Controller '070' / '07F' RTC and NMI '080' / '09F' DMA Page Register '0A0' / '0BF' 82C59 : Interrupt Controller 2 '0C0' / '0DF' 82C37 : DMA Controller 2 '0E0' / '1EF' Reserved '1F0' / '1F7' HDC '200' / '207' Game I/O '278' / '27F' Parallel Printer Port 2 '2F8' / '2FF' Serial Port 2 (COM 2) '300' / '31F' Prototype card '360' / '36F' (Reserved) '378' / '37F' Parallel PRT 1 '380' / '38F' SDLC, Bisync 2 '3A0' / '3AF' Bisync 1 '3B0' / '3BF' MDA and PRT '3C0' / '3CF' (Reserved) '3D0' / '3DF' CGA '3F0' / '3F7' FDC '3F8' / '3FF'' Serial Port 1 (COM1)