PCI Photon 8 Port RS232 Software Installation
Chapter 3 Page 16
Figure 3-2. PCI Photon 8 Port RS232 Serial Card Settings.
Multiport Settings:-
jEach Port should have the Multiport button selected, this tells
Windows 3.x that the port is one of several ports using a SISR
(shared interrupt status register).
k The SISR Base address must be set as indicated by the
BBCARDS program.
lThe Card Port setting tells Windows whether this is the first,
second, third, fourth port etc. of the Photon 8 Port RS232 card.
Standard Settings:-
m The COM Base is determined from the Bank Address as
described above, P63.
n The IRQ must be set as indicated by the BBCARDS program.
o The UART on the photon port is an enhanced 16550 called the
16950.
p Having selected the 16950 you can then set the FIFO level at
128 bytes.
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k
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m
n
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