RadiSys EPC-8A, Справочник по аппаратуре

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EPC-8A Hardware Reference
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Ethernet controller must use the same I/O base address parameter as the Ethernet
controller.
The Ethernet controller is programmed at the factory with a default I/O base address of
300h. If necessary, use the tab key to choose an optional address according to the
guidelines set out in the following sections. AUTOSET allows selection of the following I/
O base addresses: 240h, 280h, 2C0h, 300h, 320h, and 340h.
If the Ethernet controller is mistakenly programmed to use an I/O address that
conflicts with another I/O device, the AUTOSET program does not pass the
diagnostics test. In this case, disable the other device or select a different I/O
address for the Ethernet controller. For example, an Ethernet controller installed in
an EPC system that also contains an EXM-16 SCSI controller must not be set to
I/O base address 340h.
Adapter Architecture
The Ethernet controller has up to 16Kbytes of shared memory buffer. The default shared
memory base on the Ethernet controller is DC00h.
If using the DOS expanded memory manager or Microsoft Windows, be sure to exclude
the area of memory reserved for the Ethernet controller base memory.
For instance, if the Ethernet controller shared memory selected is 16 Kbytes and is located
at DC00h, when you finish using AUTOSET, include the following statement in the
CONFIG.SYS file:
device=c:\dos\emm386.exe x=dc00–dfff
... other parameters ...
For Microsoft Windows, include the following statement in the [386Enh] section of the
SYSTEM.INI file:
EMMExclude=dc00–dfff
Note that the area excluded may be greater than that required by the Ethernet controller
due to other system requirements. For example, VME and VXI EPCs also require
excluding the E page (E000 to EFFF).
If you are unsure how to make these changes, refer to the Microsoft DOS User’s Guide and
Reference and Microsoft Windows Operating System manuals.
Interrupts
Use the tab key to scroll through the displayed options and select one of the listed
interrupts. Note that AUTOSET lists all interrupts, not simply those that are available. Use
the Diagnostics routine in AUTOSET to detect invalid interrupts and IRQs.
Physical Media
The only physical media option for the Ethernet controller on the EPC-8A is 10BASE-T.
Adapter Architecture
There are two options for the method of data exchange between the CPU and the Ethernet
controller. Use the tab key to toggle the displayed option and choose the I/O Port or
Shared Memory for data exchange.