Keithley KPCI-PIO24, Руководство пользователя, Страница: 15 / 66

2-2 General Description KPCI-PIO24 User’s Manual
Specifications
General specifications are listed in Appendix A. I/O connections are identified in Section 3, and
I/O addresses are defined in Section 4.
System requirements
The system capabilities required to run the KPCI-PIO24 board, and to use the DriverLINX
software supplied with the board, are listed in Table 2-1.
Table 2-1
System requirements
* Any CD ROM drive that came installed with the required computer should be satisfactory.
However, if you have post-installed an older CD ROM drive or arrived at your present system by
updating the microprocessor or replacing the motherboard, be aware that some early CD ROM
drives do not support the long file names often used in 32 bit Windows files.
Functional description
The KPCI-PIO24 is a 24-bit parallel digital interface board designed for the PCI bus. The KPCI-
PIO24 works in a Windows 95/98/NT environment and takes advantage of the 32 bit width and
the Plug and Play feature of the PCI bus. The KPCI-PIO24 also has an easily accessible interrupt
configuration. The KPCI-PIO24 meets a wide variety of parallel I/O requirements, including
communicating with peripherals, operating relays, and reading switch inputs. All I/O lines are
TTL compatible.
Standard digital I/O emulation
The 24 I/O lines emulate the I/O lines of an Intel 8255 Programmable Peripheral Interface (PPI)
chip configured for control register mode 0, as follows:
• For the emulated 8255 chip there is a PA port, a PB port and a PC port.
• The PA and PB ports are byte-wide (8-bits) and can be set independently under software
control as inputs or outputs.
• The PC port is byte-wide but can be divided into two separate 4-bit ports: PC lower and PC
upper, each of which can be set up as either inputs or outputs.
CPU Type Pentium or higher processor on motherboard with PCI bus version 2.1
Operating system Windows® 95 or higher
Windows® NT version 4.0 or higher
Memory 16 MB or greater RAM when running Windows® 95 or 98
32 MB or greater RAM when running Windows® NT
Hard disk space 4 MB for minimum installation
50 MB for maximum installation
Other A CD ROM drive*
A free PCI bus expansion slot
Enough reserve computer power supply capacity to power the KPCI-
PIO24 board, which draws 25 W at 5 VDC