Video Controller; Peripheral Controller; External Device Connectors - NEC TM1200 User Manual

Video Controller

The system has a high-performance SVGA subsystem on a AGP bus that supports the
following:
n
AGP 4x
n
BIOS compatibility with VGA, EGA, CGA, Hercules Graphics, and MDA
n
8 MB of Video Random Access Memory (VRAM) video buffer
n
16-bit bus for high-speed display memory access
n
Hardware accelerated bit block transfers (BITBLT)
n
Display power management system
n
Supports 85 Hz refresh, non-interlaced at: 640x480, 800x600, 1024x768, or
1280x1024 resolutions
n
Displays of up to 16M colors at 1280x1024 resolution.

Peripheral Controller

The advanced integrated peripheral controller supports two serial ports, one parallel
port, diskette drive, PS/2-compatible keyboard and mouse, and integrated Real Time
Clock (RTC). The system provides the connector interface for each port.
Serial Ports
Both serial ports are relocatable. Each serial port can be set to one of four different
COM ports and can be enabled separately. When disabled, serial port interrupts are
available to add-in boards.
Parallel Port
One IEEE 1284-compatible 25-pin bidirectional EPP (supporting levels 1.7 and 1.9)
parallel port is provided. BIOS programming enables the parallel port and determines
the port address and interrupt. When disabled, the interrupt is available to add-in
boards.

External Device Connectors

The external I/O connectors provide support for a PS/2 compatible mouse and a
keyboard, connectors for VGA monitor, 2 serial port connectors, a parallel port
connector and four USB connections.
1-10 System Overview