====== Toshiba T1100 Plus ======
Specifications:
CPU....: 80C86-2 / 7.16 MHz
RAM....: 256 KB onboard, extendable to 640 KB using an optional memory card
Graphic: CGA clone with 32KB of memory
HDD....: None
Drives.: 2x 3.5" / 720K Floppy drives
=== CPU Speed ===
The T1100 Plus CPU operates by default at a speed of 7.16 MHz. This is significantly faster than the original IBM PC. If you need to use programs designed specifically for the IBM PC speed, the T1100 Plus allows you to turn the CPU into a "low speed" mode where the CPU will run at 4.77 MHz. Switching between low and hi speed modes can be done at runtime, simply pressing a key combination:
CTRL+ALT+PGUP -> switches the CPU into HiSpeed mode (7.16 MHz)
CTRL+ALT+PGDOWN -> switches the CPU into LoSpeed mode (4.77 MHz)
According to the current speed mode, the POWER LED will change its color (green for high speed, orange for low speed).
=== MOUSE ===
You can attach a serial RS-232 mouse to the T1100 Plus. I tested with a 3-buttons Logitech mouse, and it works flawlessly. I had to use the Logitech driver v6.00 though, since trying to run the mouse with CTMOUSE v2.1 beta4 failed.
=== BATTERY ===
The battery is a 4.8V NiCd battery. As all batteries, it has a limited lifetime, and eventually will leak, wich might damage the computer's motherboard. It is not possible to use the computer without a battery though, so a good idea could be to replace the battery with a capacitor. I replaced my battery with a 47'000 uF, 10V capacitor, and it did the trick. Note: if you do that, do NOT use the original power supply any more! The original power supply is not stabilized, so when the computer is off, it delivers much more than the expected 9V (mine shows 12V). Such voltage would destroy the capacitor (if you took one rated at 10V), and more importantly, it might also damage the computer. The NiCd battery was also playing a role of stabilizing the voltage so it doesn't go too high. With a capacitor, you must take care to supply already stable voltage. I hadn't payed attention to this detail, and I fried my 384K RAM expansion module. Hopefully, you won't.
=== DOWNLOADS ===
IMG Mainboard overview (with BIOS accu removed).jpg
BIN Microsoft DOS 3.30 [Toshiba OEM] (3.5).7z
IMG Original battery pack.jpg
IMG Original BIOS accu.jpg
IMG RAM extension 640K 1 front.jpg
IMG RAM extension 640K 2 front.jpg
IMG RAM extension 640K 3 back.JPG
TEXT Toshiba 5.25" 360KB External Floppy Drive Connector pin-out.txt
BIN Toshiba CE Diagnostics boot diskette.zip
RESERV Toshiba T1100 PLUS - Maintenance Manual.pdf
RESERV Toshiba T1100 Plus ad vs IBM portable.pdf
RESERV Toshiba T1100 Plus presentation.pdf
RESERV Toshiba T1100 press article (ELECTRONICS Australia, January 1986).pdf