Programming
BUF-PCI(PC), BUF-PCI(98)
53
Supplement
The I/O wait defaults to "2wait" and the refresh signal to "no
output."
In the cycle for generating an I/O wait from the board mounted in
the I/O expansion unit, the I/O wait is allowed for a maximum
period of one microsecond. At the end of that period, the cycle is
forced to terminate.
If the I/O wait is set to "0wait," the I/O wait request signal is
ignored.
After implementing the termination process, each function of the
BUF-PCI driver software cannot be run until reinitialized.
Description of accessing I/O ports on the BUS-PCI(PCI) board
Use the BufPciIoAddress secured during execution of BufPciOpen.
Actual operations are as follows:
outpw( BufPciIoA 0xfc, ( (bRefreshOn << 4) + bIoWait) );
For more information, see the section on I/O port addresses.
Содержание BUF-PCI(98)
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