AMD Am7990 Panduan Referensi - Halaman 7

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IBM PC Ethernet/Cheapernet Board Package
• Coax Tee Connector
• son
Coax Terminator
(2 each)
up to 185 meters
(600 feet)
of Cheapernet Cable
(RG58 AlU,
C/U)
PC-turbo
'-----186 cards
• APP2005Rev.1
AUI
Cable
''User Supplied Ethernet Connection"
Figure 2.
08496A-2
registers, initialization, transmit, internal/external loopback
test, etc). Having two boards on hand will provide addi-
tional testing of the chipset in a network environment. This
board can also be used for monitoring the network and
gathering statistics.
Some of those statistics are as follows:
- No. of received packets
- No. of transmitted packets
-
No. of receive errors (e.g., CRC, frame, overflow, etc.)
-
No. of transmit errors (e.g., Late collision, underflow,
etc.)
-
No. of fatal errors (e.g., Missed packets, memory
timeout error, etc.)
- Network traffic
(measuring the rate of collision occurrence in network)
This software package has been structured as a command
level driver software. The user can get the list of com-
mands via the "HELP" command. The following is a brief
summary of the functions under user control:
- Driver: Implementing the low level data packet on cap-
sulation and decapsulation of the data link.
7
- LANCE data structure construction
-
Routines to show how to implement the LANCE's
initialization block
- Accessing the LANCE registers
- Setup procedures for transmit & receive
- Test: internal/external loopback test, CSRO - CSR3 test
- Batch executable capability to ease user's interface for
specific sequence of command executions.
- User's specific program execution residing in SRAM
- Fill/Set memory
-
Echo test: Echo packets between two nodes in the
network.
Keeps track of sequence number of trans-
mitted and received packets.
- Software control switches:
- Speed up/slow down transmit packets
- Speed up/slow down the LANCE polling time
- Enable/disable transmitter or receiver
- Enable/disable CRC generator
- Enable/disable output to monitor screen
- Stop/continue on transmit errors
- Stop/continue on receive errors
- Loop on command (scope loop)
IBM PC Ethernet/Cheapernet Board Package
• Coax Tee Connector
• son
Coax Terminator
(2 each)
up to 185 meters
(600 feet)
of Cheapernet Cable
(RG58 AlU,
C/U)
PC-turbo
'-----186 cards
• APP2005Rev.1
AUI
Cable
''User Supplied Ethernet Connection"
Figure 2.
08496A-2
registers, initialization, transmit, internal/external loopback
test, etc). Having two boards on hand will provide addi-
tional testing of the chipset in a network environment. This
board can also be used for monitoring the network and
gathering statistics.
Some of those statistics are as follows:
- No. of received packets
- No. of transmitted packets
-
No. of receive errors (e.g., CRC, frame, overflow, etc.)
-
No. of transmit errors (e.g., Late collision, underflow,
etc.)
-
No. of fatal errors (e.g., Missed packets, memory
timeout error, etc.)
- Network traffic
(measuring the rate of collision occurrence in network)
This software package has been structured as a command
level driver software. The user can get the list of com-
mands via the "HELP" command. The following is a brief
summary of the functions under user control:
- Driver: Implementing the low level data packet on cap-
sulation and decapsulation of the data link.
7
- LANCE data structure construction
-
Routines to show how to implement the LANCE's
initialization block
- Accessing the LANCE registers
- Setup procedures for transmit & receive
- Test: internal/external loopback test, CSRO - CSR3 test
- Batch executable capability to ease user's interface for
specific sequence of command executions.
- User's specific program execution residing in SRAM
- Fill/Set memory
-
Echo test: Echo packets between two nodes in the
network.
Keeps track of sequence number of trans-
mitted and received packets.
- Software control switches:
- Speed up/slow down transmit packets
- Speed up/slow down the LANCE polling time
- Enable/disable transmitter or receiver
- Enable/disable CRC generator
- Enable/disable output to monitor screen
- Stop/continue on transmit errors
- Stop/continue on receive errors
- Loop on command (scope loop)