The Retro Web DT-220 D-Link Network Card Instructions

The Retro Web DT-220 D-Link Network Card

Specifications

• NIC Type: Token-Ring
• Transfer Rate: 4/16Mbps
• Data Bus: 16-bit ISA
• Toplogy: Ring
• Wiring Type: Unshielded twisted pair (DB-9 port) / Shielded twisted pair
• Boot ROM: Available (Built-in Remote Program Load)

Product Usage Instructions:

Jumper Settings
Refer to SW1 settings for jumper configurations.

Primary/Secondary Card Select:
If installing two NICs, set one to primary and the other to secondary.

Shared Memory Size
Set SW1/10 for shared memory size. Choose between 8KB, 32KB, or 64KB. The 16KB option supports memory paging.

Network Segment Speed
Set SW1/12 for network segment speed. Choose between 16Mbps and 4Mbps. Ensure all NICs on the network segment are set to the same speed.

Diagnostic LED(s)
The amber LED will briefly light up during power application. The green LED indicates 16Mbps network speed, while the amber LED indicates 4Mbps network speed.

FAQ

• Q: How do I know if the NIC is set to the correct network speed?
  A: Check the diagnostic LEDs – green LED for 16Mbps and amber LED for 4Mbps.

• Q: Can I install multiple NICs in a system?
  A: Yes, ensure one NIC is set to primary and the other to secondary using jumper settings.

• Q: What is the purpose of the Boot ROM feature?
  A: The Boot ROM allows for Built-in Remote Program Load functionality.

• Q: How do I configure the shared memory size?
  A: Use SW1/10 to select between 8KB, 32KB, or 64KB. The 16KB option supports memory paging.

Chapter 5: Jumper Settings

THE NETWORK INTERFACE CARD TECHNICAL GUIDE

D-LINK D T – 2 2 0

• NIC Type Token-Ring
• Transfer Rate 4/16Mbps
• Data Bus 16-bit ISA
• Topology Ring
• Wiring Type Unshielded twisted pair
• Shielded twisted pair (DB-9 port)
• Boot ROM Available (Built-in Remote Program Load)

BOOT ROM ADDRESS

Address| SW1/1| SW1/2| SW1/3| SW1/4| SW1/5| SW1/6
C0000h| Off| On| On| On| On| On
C2000h| Off| On| On| On| On| Off
C4000h| Off| On| On| On| Off| On
C6000h| Off| On| On| On| Off| Off
C8000h| Off| On| On| Off| On| On
CA000h| Off| On| On| Off| On| Off
CC000h| Off| On| On| Off| Off| On
CE000h| Off| On| On| Off| Off| Off
D0000h| Off| On| Off| On| On| On
D2000h| Off| On| Off| On| On| Off
D4000h| Off| On| Off| On| Off| On
D6000h| Off| On| Off| On| Off| Off
D8000h| Off| On| Off| Off| On| On
DA000h| Off| On| Off| Off| On| Off
DC000h| Off| On| Off| Off| Off| On
DE000h| Off| On| Off| Off| Off| Off
INTERRUPT REQUEST

IRQ                                                 SW1/7 SW1/8
2/9| On| On
í3| On| Off
7| Off| Off
PRIMARY/SECONDARY CARD SELECT

Setting SW1/9
íPrimary| Off
Secondary| On
Note: If two NICs are installed in a system, one must be set to primary, and the other to secondary.
SHARED MEMORY SIZE

Size                                                SW1/10 SW1/11
8KB| On| On
í16KB| Off| On
32KB| On| Off
64KB| Off| Off
Note: The 16KB option is the only setting that supports memory paging.
NETWORK SEGMENT SPEED

Speed SW1/12
16Mbps| Off
4Mbps| On
Note: All NICs on the network segment must be set to the same speed.
DIAGNOSTIC LED(S)

Amber LED                            Green LED Condition
On| Off| Network speed is set to 4Mbps
Off| On| Network speed is set to 16Mbps
Note: The amber LED will light momentarily when  power is  applied  to the  NIC.  The appropriate  LED  will then light to indicate the network speed at which the card is set.

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