T8500 (No longer manufactured) General Information Model number: PA5042U Dimensions: CPU - 5.8"W x 16"D x 4.1"H Keyboard - 18.5"W x 8.5"D x 2.2"H Weight: 22 lbs. Voltage: 115 VAC, 1.3A 220 VAC, 0.7A auto sensing CPU: 80386-25; 80387-25 or Wetek 3167 coprocessor socket RAM memory: 2MB (640KB conventional; 1.384MB LIM-EMS 4.0 or extended memory) Memory Expandable up to 14MB with optional 2MB and 8MB memory modules (Must have at least one 2MB memory module installed to use 8MB memory module) 64K Cache Memory Display adapter: VGA Display Controller Resolution: 640 x 480 Number of keys: 101 Keyboard type: 101-key keyboard compatible Drives: One 100MB hard disk drive, Second 100MB hard disk drive optional One 1.44MB 3.5" floppy disk drive Features: Speaker Volume Control, Reset Switch, Key Power Switch Operating systemd: Toshiba MS-DOS 4.01 Software Compatibility Compatible with software written for the IBM PC/XT/AT Interfaces VGA color video port 2 RS-232-C serial ports Parallel printer port External diskette or tape drive port SCSI port 3 Toshiba proprietary memory slots 3 full-length 16 bit IBM expansion slots, and 1 dual purpose half-length expansion slot (IBM 8-bit or Toshiba "A" form factor slot) 3.5" 100MB Hard Disk Drive Conner Peripherials HDD: CP-3104 Interface: IDE Average access time: 25 Recording Method: 2-7 RLL Soft Switches 1) Change Speed Ctrl+Alt+PgDn 8Mhz CPU speed Ctrl+Alt+PgUp 25Mhz CPU speed Hardware Switches and Controls 1) Power on/off Key lock located on front of computer Power on/off switch located on back of computer 2) Reset Located inside door on front of computer 3) Speaker volume control Located inside door on front of computer 4) 8 DIP switch bank Located inside door on front of computer SW1 OFF IRQ4 to Toshiba slot ON IRQ4 to all IBM slots SW2 OFF IRQ3 to Toshiba slot ON IRQ3 to all IBM slots SW3 OFF Reserved (set to OFF) ON SW4 OFF Enable internal video controller ON Disable internal video controller SW5 OFF PRT output only ON PRT Bidirectional SW6 SW7 SERIAL 1 SERIAL 2 ---------------------------------- OFF OFF COM1 COM2 OFF ON COM1 COM3 ON OFF COM2 COM1 ON ON COM2 COM3 SW8 OFF EXT-FDD DRIVE "B" ON EXT-FDD DRIVE "A" Options & Extra Accessories PC10-PA8304U 2MB memory module PC-PA8313U 8MB memory module PC11-PA5355U Additional 100 MB Hard Drive PC-T24A 2400 bps Hayes compatible Toshiba expansion slot modem w/serial port (no longer manufactured) PC-PA5467U ToshibaLAN 16 bit Ethernet card PC-PA5466U ToshibaLAN 8 bit Ethernet card (IBM/XT compatible 1/2 size card) PC-PA7225U 5.25" 360KB external FDD with 18VDC adapter PC-PA722L TD80 external tape drive PR-PA2750U ExpressWriter 201 portable printer PC-SW004 Toshiba BASIC 3.30 (includes diskette and manual) PC-SW008 Toshiba MS-DOS 3.30 (includes diskettes and manual) PC-SW007 Toshiba MS-DOS 4.01 (includes diskettes and manuals) PC-SW013 Toshbia MS-DOS 5.0 (includes diskettes and manuals) PC-SW012 Toshiba MS OS/2 operating system 1.21 System Memory Map Same as T5200 (refer to that section) Interrupts Interrupt Level Assigned To: NMI Memory Parity Error, I/O Channel Error 0 Timer 1 Keyboard 2 Interrupt Controller for levels 8 - 15 1 3 Secondary Communications (COM 2) 4 Primary Communications (COM 1) 5 Printer 2 6 Floppy Disk 7 Printer 1 8 Real Time Clock 9 Software Redirect to INT '0A' 2 10 (Reserved) 11 SCSI 12 Mouse 13 Math Coprocessor 14 Hard Disk 15 (Reserved) I/O Port Assignment Port Address From / To Device / Function ------------------------------------------------------- '000' / '01F' 82C37A : DMA Controller 1 '020' / '03F' 82C59A : Interrupt Controller 1 '040' / '05F' 82C54 : Timer '060' / '06F' 8042/8742: Keyboard Controller '070' / '07F' RTC & NMI '080' / '09F' DMA Page Register '0A0' / '0BF' 82C59A : Interrupt Controller 2 '0C0' / '0DF' 82C37A : DMA Controller 2 '0E0' / '0EF' Reserved '0F0' / '0F7' NPX Error Reset '0F8' / '1EF' (Reserved) '1F0' / '1F7' HDC port '200' / '207' (Reserved) '208' LIM Set 0 Page Register '209' / '217' (Reserved) '218' LIM Set 1 Page Register '219' / '257' (Reserved) '258' LIM Set 5 Page Register '259' / '267' (Reserved) '268' LIM Set 6 Page Register '279' / '2F7' (Reserved) '2F8' / '2FF' SIO Port 2 or Toshiba modem '300' / '337' SCSI adapter (MB89352) '338' / '33F' SIO Port 3 '340' / '377' (Reserved) '378' / '37F' Printer Port 1 '380' / '3AF' (Reserved) '3B0' / '3DF' BGS/HRGS Ports '3E0' / '3EF' (Reserved) '3F0' / '3F7' FDC/FDD Interface '3F8' / '3FF'' SIO Port (1, 2, Modem card 'X000' / 'X00F' For T8500 I/O card '4010' / '401f' For T8500 I/O card '40D0' / 40DF' For T8500 I/O card '8010' / '801F' For T8500 I/O card '8080' / '808F' System Control Register and Status '80D0' / '80DF' 17-inch CRT 'C010' / 'C01F' T8500 System Control 'C0D0' / 'C0DF' For T8500 I/O card 'X020' / 'X03F' For T8500 I/O card 'X0A0' / ' X0CF' For T8500 I/O card