can anybody tell me anything about a toshiba t1200? is the o/s ms dos 3.3 or ibm dos 3.3. is there two models, one with a 720k floppy and a 20mb hard drive, one with two 720k floppies? how much ram? what cpu? any other points of interest? I thank you kindly for your time. I bought it hoping to run dos 6.22 on it but didn't do my homework and now i'm paying. Perhaps there is something I can use it for.

"only a life lived for others is a life worthwhile" Albert Einstein 1932

http://www.old-computers.com/museum...

Here is a link to a Toshiba PDF.

http://www.toshiba.ca/web/pdf/Toshi...

Hope this helps.

t1200F---floppy
t1200H---hard drive

T1200F/FB/H/HB (No longer manufactured)

General Information
Part number: T1200F - PA7044U
T1200FB - PA7044UW
T1200H - PA7048U
T1200HB - PA7048UW
Dimensions: T1200F, T1200H 12.2"W x 2.6"H x 12.0"D
T1200FB, T1200HB 12.2"W x 2.9"H x 12.0"D
Weight: T1200F - 9.4 lbs.
T1200FB - 9.9 lbs.
T1200H - 10.9 lbs.
T1200HB - 11.4 lbs.
Voltage: Computer DC input - 12 VDC, 2.2 A (+ = core; - = shell)
AC adapter - 110/220 VAC 50/60 Hz 40W
Battery: Removable rechargeable NiCD battery pack
CPU: 80C86-1 (9.54/4.77MHZ); 80C87 coprocessor socket
RAM memory: 1MB standard (640KB conventional; 384KB LIM EMS or HardRAM)
Memory expandable to 2MB when optional 1MB LIM-EMS (3.2)/Hard Ram
memory card is added
Number of keys: 82
Keyboard type: Selectable between 84 or 101-key keyboard compatible
Drives: T1200H, T1200HB - One 20MB hard disk drive,
One 720KB 3.5" floppy disk drive
T1200F, T1200FB - Two 720KB 3.5" floppy disk drives
Features: AutoResume, HardRam, Intelligent power supply with "Gas
Gauge"
Operating system: Toshiba MS-DOS 3.30

Software Compatibility
Compatible with software written for the IBM PC/XT using a color graphics
adapter (CGA) display

Interfaces
RGB (CGA) color video port
Composite b&w monochrome video port
RS-232-C serial port
Parallel printer port
Numeric keypad port
External diskette drive port
Toshiba proprietary expansion slot - "A" form factor
Built-in dedicated modem slot - "C" and "D" form factors

Display
Display type T1200F/H: Reflective Supertwist LCD
Display type T1200FB/HB: Electroluminescent Backlit Supertwist LCD
Display area R.S. LCD: 9.24" W x 4.2" H; 10" diagonal
Display area EL backlit LCD: 9"W x 4.2"H; 9.75" diagonal
Resolution: 640W x 200H
Viewing angle: -15 to 40 degrees
Contrast: Reflective supertwist display 5 : 1

3.5" 20MB Hard Disk Drive (T1200H/HB)
JVC HDD: JD-3244LOT1
Number of heads: 4
Number of cylinders: 615
Average access time: 68ms
Recording method: 2-7 RLL
Interleave: 3:1

Battery Life (Time until low battery LED)
Tests w/ 10% FDD access, 20% HDD access, Temperature 25 degrees C

T1200F/T1200H | HDD | FDD | MODEM | Running Time
---
Off | ---- | ---- | ----- | ~2 months *1
Off | ---- | ---- | ----- | ~10 days *2
Off | ---- | ---- | ----- | ~ 2 days *3
On | Off | Off | NI | 7.5 Hours
On | Off | On | NI | 6 Hours
On | On | On | NI | 2 Hours
On | Off | Off | Off | 6.2 Hours
On | Off | On | Off | 5.7 Hours
On | On | On | Off | 1.9 Hours
On | Off | On | On | 4.4 Hours
On | On | On | On | 1.7 Hours
T1200FB/T1200HB | HDD | FDD | MODEM |Running Time
Off | ---- | ---- | ---- | ~2 months *1
Off | ---- | ---- | ---- | ~10 days *2
Off | ---- | ---- | ---- | ~2 days *3
On | Off | Off | NI | 2.8 Hours
On | Off | On | NI | 2.6 Hours
On | On | On | NI | 1.4 Hours
On | Off | Off | Off | 2.6 Hours
On | Off | On | Off | 2.6 Hours
On | On | On | Off | 1.3 Hours
On | Off | On | On | 2.3 Hours
On | On | On | On | 1.2 Hours

"NI" means not installed Notes:
"~" - Approximately
*1 - Calendar/Clock battery maintaining time
*2 - Main Memory & EMS Memory maintaining
time w/fully charged main battery
*3 - Main Memory & EMS Memory maintaining
time using backup battery only

Soft Switches
1) Change CPU speed
Fn + PgUp 9.54MHz CPU speed
Fn + PgDn 4.77MHz CPU speed
2) Character font
Fn + Right arrow Toggles display font
3) Display select
Fn + End External display
Fn + Home LCD display
4) Pop-up window
Fn + Sys Req Toggles pop-up window
5) Keypad overlay
Fn + NumLock Toggles keypad overlay
6) Fn key
Fn + F1 F11
Fn + F2 F12
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 back of computer
2) Reset
- Located on left side of computer
3) A/B/DIS switch
- Located on left side of computer
- With switch set to "A", external FDD is accessed as drive A;
internal 3.5" FDD as drive B.
- If computer has two internal floppy drives (T1200F, T1200FB)
the bottom drive is disabled.
- With switch set to "B", external FDD is accessed as drive B;
internal 3.5" FDD as drive A.
- If computer has two internal floppy drives (T1200F, T1200FB) the
bottom drive is disabled.
- If no external drives are being used switch should be set to DIS.
- Computer must be re-booted for switch change to take effect.
4) LCD contrast dial
- Located on left side of computer
5) LCD brightness dial - on T1200FB and T1200HB; or models upgraded to
backlit screen
- Located on front of display
6) HDD on/off switch - on T1200H and T1200HB only
- Located on back of computer next to power switch

Options and Extra Accessories
----------------
PC-PA7139U 1MB LIM-EMS 3.2 memory card (Toshiba expansion slot)
PC-PA7225U 5.25" 360KB external FDD with 18VDC adapter
PC-PA7310U Expansion chassis & cable (requires expansion interface card)
PC-PA7312ER Expansion interface card (Toshiba expansion slot)
PC-PA7354E 17-key numeric keypad
PC-PA7367E Floppy Link to 5.25" desktop diskette drive
PC-PA7438EB 300/1200 bps Hayes compatible Toshiba exp. slot modem
(no longer manufactured)
PC5-PA7439E T1200 300/1200 bps Hayes compatible dedicated built-in modem
(no longer manufactured)
PC-T24A 2400 bps Hayes compatible Toshiba exp. slot modem w/serial
port (no longer manufactured)
PC-T24C 2400 bps Hayes compatible dedicated built-in modem
(no longer manufactured)
PC-T24D 2400 bps Hayes compatible dedicated built-in modem
(Bell or CCITT)
PC-T24D/X 2400 bps Hayes compatible dedicated built-in modem
w/enhanced protocol (MNP5, V.42 bis)
PC5-PA7485U 12VDC Universal AC adapter (no longer manufactured)
PC-PA7487U 12VDC 2.5A Universal AC adapter (replaces PC5-PA7485U)
PC5-PA7490U Battery pack recharger (requires AC adapter)
PC5-PA7491U Battery pack
PC-PA748L 12VDC automobile power adapter (no longer manufactured)
PC-PA7486U 12VDC automobile power adapter (replaces PC-PA748L)
PC-PA5462U ToshibaLAN 8/16 bit Ethernet card & AC power adapter
(no longer manufactured)
PC5-PA759L Fabric carrying case (no longer manufactured)
PC15-PA8020U Fabric carrying case (replaces PC5-PA759L)
PR-PA2750U ExpressWriter 201 portable printer
PC-SW008 Toshiba MS-DOS 3.30 (includes diskettes and manual)
PC-SW007 Toshiba MS-DOS 4.01 (includes diskettes and manuals)
PC-SW004 Toshiba BASIC 3.30 (includes diskette and manual)
PC5-PA7174U Backlit upgrade (no longer manufactured)
Contact ASP 20MB hard drive upgrade for T1200F/FB (Installed by
Toshiba Authorized Service Providers)

System Memory Map
Start Address Space
Decimal Hex (Kilobytes) Used For:
-
0 00000
64K 10000
128K 20000
192K 30000
256K 40000 System working
320K 50000 640 memory
384K 60000
448K 70000
512K 80000
576K 90000
-
640K A0000
704K B0000 96 (Not Used)
-
736K B8000 16 Video RAM
-
752K BC000 32 (Not Used)
-
768K C0000
832K D0000 192 Space for I/Os on I/O
896K E0000 expansion slot
-
960K F0000 2 Back-Up RAM
-
962K F0800 30 (Not Used)
-
992K F8000 32 System (BIOS) ROM
-

Interrupts
Level Assigned To:

NMI Power Supply; I/O Channel Check; 8087 Interrupt
0 Timer
1 Keyboard
2 (Reserved)
3 Secondary Communications (COM2)
4 Primary Communications (COM1)
5 Hard Disk
6 FDD
7 Parallel Printer

I/O Port Assignment

Port Address
From / To Device / Function
-
'000' / '01F' 82C37 : DMAC Device
'020' / '03F' 82C59 : PIC Device
'040' / '05F' 82C53 : PIT Device
'060' / '07F' Programmable I/O Ports
'080' / '09F' DMA Page Register
'0A0' / '0BF' NMI Mask Register
'0E0' / '0FF' Special Register
'1F0' / '1FF' Hard Disk
'208' / '20F' Expanded Memory Unit I/O - 1
'218' / '21F' Expanded Memory Unit I/O - 2
'258' / '25F' Expanded Memory Unit I/O - 3
'268' / '26F' Expanded Memory Unit I/O - 4
'2A8' / '2AF' Expanded Memory Unit I/O - 5
'2B8' / '2BF' Expanded Memory Unit I/O - 6
'2C0' / '2DF' Real Time Clock
'2E8' / '2EF' Expanded Memory Unit I/O - 7
'2F8' / '2FF' Secondary Communications (COM2)
'378' / '37F' Parallel Printer
'3D0' / '3DF' Display
'3F0' / '3F7' FDC
'3F8' / '3FF' Primary communications (COM1)

You didn't specify exactly what your problem was but dos 6.22 is going to be on 1.44 floppies and you've got 720 K floppy drive(s).

It's not practical to run 6.22 if you have no hard drive, as 6.22 spans more than a single disk. But if you have a hard drive, 6.22 will run just fine once you get it installed.

You may be able to either copy the 1.44 disks to 720 formatted disks and run the installation or copy the 1.44 to 720 and then copy the 720 to the hard drive and run the installation. However, those methods may not work since the installation files expect it to be done from the 1.44 disks.

The last time I did it I installed 6.22 to another computer and then copied its dos directory to the 8088 computer. You need some dos background as you have to SYS the hard drive first, manually create a dos directory and then copy the files to it.

To install dos 6.22 on a hard drive, do this:

You need another computer, running any operating system, that has a 1.44mb disk drive (I will refer to this computer as computer2).

1. Boot up the computer2 with the dos 6.22 1.44mb disk #1.

2. Press F3 twice to cancel the installation.

3. Format a 720kb disk(If you don't have a 720kb disk you can take a 1.44mb disk and put a piece of sticky tape over the hole on the right side of the disk.)
and label it the same as the 1.44mb disk.

4. sys the 720kb disk (type sys a:)

5. copy half of the files on the 1.44mb disk to the 720kb disk and the other half of the files to an other 720kb disk.(the second disk has to be labeled as the 1.44mb disk as well.)
Make sure that the files install.exe expand.exe keyb.com keyboard.sys nlsfunc.exe sys.com and format.com are on the sys:ed disk.

6. Now format the t1200's harddrive boot it using the sys:ed disk.

7. When it tells you that a file is missing, write down the name of the file and swap to the second disk (You will have to expand these files manually later using the expand command.)

8. When it tells you that the setup needs disk 2, copy the files from the 1.44mb disk using computer2 to 2 720kb disks and label them the same as the 1.44mb disk. Do the same with disk 3. (Note that the disks used as setup disks 2 and 3 should not be sys:ed.)

Good Luck!