Toshiba Tecra 700CS Maintenance Manual page 8

Keyboard Controller (KBC)
One M38802M4 chip is used.
The KBC, which includes the keyboard scan and keyboard interface controllers,
controls the internal keyboard, external keyboard, and PS/2 mouse.
Real Time Clock (RTC)
A T9934 chip with 128 bytes of memory is used. Fourteen (14) bytes are used for the
calendar and clock, and the remaining 114 are used for the system configuration data.
TM
Super I/O
National Semiconductor PC87336VLJ has the following functions:
- Two UARTs
- One FDC
- One parallel port control supported ECP/EPP
Audio Drive
One ESS688 Audio Drive
A/D converter that offer 16-bit stereo sound.
One YMF262 chip (OPL3) is used. This chip is an FM synthesizer chip.
1-8
16550A equivalent (One SIO is used for SIR.)
µPD765A equivalent
®
chip is used. This chip contains a D/A converter and an
700 Series