Intergraph TD-x10 Setup, System Reference Manual

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SCSI Controller
The SCSI controller is the Adaptec Ultra SCSI Adapter (AIC-7860), which provides a single-ended bus
for SCSI-1, Fast SCSI-2, and Ultra SCSI devices. The SCSI bus is dedicated to the hard disk drives
and CD-ROM drive. The SCSI bus actively terminates on the system board and at the end of the
internal SCSI cable. The AIC-7860 supports low-speed devices to allow legacy SCSI devices to be
used with the system. By default, the controller functions in Fast SCSI-2 mode rather than Ultra mode.
I/O Controller
The Standard Microsystems Corporation (SMC) Super I/O Controller (FDC37C932) integrates mouse,
keyboard, serial, parallel (multi-mode), floppy (2.88 MB), and Real-Time Clock (RTC) functions into
one chip.
Serial Port
The FDC37C932 supports four serial ports via two external port connectors (COM 1 and COM 2).
COM1 can be configured as COM1 or COM3; COM2 can be configured as COM2 or COM4. The
serial ports use the system I/O addresses shown below.
Port Addresses Interrupts
COM1 3F8-3FF IRQ4
COM2 2F8-2FF IRQ3
COM3 3E8-3EF IRQ4
COM4 2E8-2EF IRQ3
The addresses for each serial port can be configured in AMIBIOS Setup, as described in the System
Setup. Do not assign more than one device to the same COM port number. Serial port problems occur
because a serial port and another device are assigned to the same COM number. The system and the
connected serial device must be set to the same communications parameters (baud rate, parity, number
of data bits, and number of stop bits). Refer to the serial device documentation for information about
setting these parameters.
Parallel Port
The parallel port functionality of the FDC37C932 includes the following modes:
u
Normal mode (or Compatibility mode) - an industry-standard parallel interface mode. Normal
mode provides an asynchronous, byte-wide forward channel (host to peripheral), and is the base
mode common to all compliant interfaces.
u
SPP mode (or Byte or Bi-Dir mode) - compatible with IBM PS/2 hosts. SPP is an asynchronous,
byte-wide reverse channel (peripheral to host) mode using the eight data lines of the interface for
data, and the control/status lines for handshaking. Transfer direction is controlled by the host
when the peripheral and the host both support bi-directional use of data lines.
u
EPP mode - provides an asynchronous, byte-wide, bi-directional channel controlled by the host
device. This mode also provides separate address and data cycles over the eight data lines of the
interface. EPP increases the data transfer performance to 2 MB per second while retaining
backward compatibility with existing AT and PS/2 compatible interfaces.
u
ECP mode - similar to EPP, providing an asynchronous, byte-wide, bi-directional channel
controlled by the host device. Additionally, ECP implements a control line to distinguish between
command and data transfers. A command may optionally be used to indicate single byte data
compression or channel address. Other ECP mode features include: