Kontron 104-422-2I, Руководство пользователя

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Overview 5-3 104-422/485-2I User’s Guide
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Overview
A total of 32 address locations are allocated to the 104-422/485-2I, 17 of which are used. The
UARTs are addressed as follows:
Table 5-1. Address Selection
The Read / Write registers for the UARTs match the industry-standard 16550 registers. The Card
IRQ status register is compatible with Windows NT. COM A will set bit 0 hi on interrupt, COM B will
set bit 1 hi on interrupt.
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Sample Programs
There are sample programs provided with the 104-422/485-2I card in C, Pascal, QuickBASIC, and
several Windows languages. DOS samples are located in the DOS directory and Windows samples
are located in the WIN32 directory.
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Windows Programming
The 104-422/485-2I card installs into Windows as COM ports. Thus the Windows standard API
functions can be used. In particular:
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CreateFile() and CloseHandle() for opening and closing a port.
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SetupComm(), SetCommTimeouts(), GetCommState(), and SetCommState() to set
and change a port’s settings.
J ReadFile() and WriteFile() for accessing a port.
I/O Address Read Write
Base +0 thru 7 COM A UART COM A UART
Base +8 thru F COM B UART COM B UART
Base +10h Card IRQ Status N/A