Toshiba T2150 series Maintenance Manual page 7

I/O Controller Gate Array (IOCNT-GA)
This gate array has the following functions:
PCMCIA Controller Gate Array
This gate array has the following functions:
Level Shift Gate Array
This gate array has the following functions:
Video Controller LSI (C&T 65545)
The T2150 series internal display controller (3.3/5 volts operation)
controls the internal VGA display and external SVGA compatible
display.
Keyboard Controller (KBC)
One M38802 chip is used.
This KBC includes the keyboard scan controller and keyboard inter-
face controller. The KBC controls the internal keyboard, external
keyboard port, and PS/2 mouse port.
Real Time Clock (RTC)
One T9934 chip is used. The T9934 has 128 bytes of memory. Four-
teen bytes of memory are used for the calender and clock. The re-
maining 114 bytes are used for the system configuration data.
T2150 Series
Hotkey control
BIOS ROM interface
PS interface
NEXUS GA function
Internal communication control
KBC, main CPU communication register file
KBC interrupt control
KBC communication control
PCMCIA memory card control
Level shift 5V data bus <==> 3V data bus
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