Installation guide

Chapter 9 Network Device Driver Options 177
DCA IRMATrac Token-Ring/Convertible 16/4
Required entry:
• drivername = irmatr$
The following table summarizes the possible entries and values in the
[irmatr] section of the LAN Manager PROTOCOL.INI file:
Entry Units Range Default
datarate integer 4, 16 16
datatransfer — dma, memmap,
pio
pio
dmachannel integer 5–6 5
drivername — — irmatr$
earlyrelease — no, yes yes
interrupt integer 2, 3, 5, 7
(MS-DOS) 3, 5, 7
(MS OS/2)
3
ioaddress hex. A20, 1A20 1A20
maxtransmits integer 1–50 6
netaddress hex. 12 hex. digits See explanation
ram hex. C000–DC00 D800
recvbufcount integer 3–60 16
recvbufsize integer 256–2040 256
Entries in the [irmatr] section of the LAN Manager PROTOCOL.INI file
have the following meanings:
datarate
Specifies the rate of the RIM installed on the network adapter. This
setting must match the RIM installed on the adapter, or the driver will
return a configuration error. The datarate entry is used when the
installed RIM is 16 MB.
datatransfer
Indicates the type of I/O method used by the driver: dma for BUS
Master DMA, memmap for memory-mapped I/O, or pio for direct
(programmed) I/O. If this value is set to dma on an XT computer, the
driver will ignore the setting and use memmap. The datatransfer
entry is ignored on MicroChannel computers.
dmachannel
Specifies the DMA channel used for I/O transfers to and from the
adapter. This value is ignored if the datatransfer entry is pio or
memmap. The dmachannel is ignored on MicroChannel computers.