3015

3015 is a HDLC + autoload controller.

This article is a stub. You can improve NDWiki by expanding it.

Introduction

Special intercomputer link interface for highspeed communication between ND-110/ND-110 or ND-110/N-10/10-S (see ND-726)

A MEGALINK interface can only communicate with another MEGALINK interface.

Synchronous transmission format.

HDLC (High level Data Link Control) frame format handled in hardware.

Direct Memory Access (DMA) transfer of data.

Line connection: Special computerlink connection with balanced drivers/receivers (RS-422).

Speed up to 983kbps.

 For machine-to-machine cable, check out cable 325402 in Service Handbook II, chapter 2-20 - http://norsk-data.com/library/libsw/ND-NDSH02-03-EN.pdf (http://norsk-data.com/library/libsw/libsw.html)

Switches and indicators

The card has three thumbwheel switches numbered 3,2,1 from the top of the card. In addition it has switches at positions 13A, 17G and 26G.

• Thumbwheel 1 - baud rate
  • 0 - 307 K baud
  • 3 - 1.2 K baud
  • 6 - 9.6 K baud
  • 7 - 38.4 K baud
  • 8 - 153.6 K baud
  • 9 - 76.8 K baud
  • 11 - 19.2 K baud
  • 13 - 4.8 K baud
  • 14 - 2.4 K baud
• Thumbwheel 2 - autoload device number
  • 0 - device 1600 - not allowed
  • 1 - device 1604
  • 2 - device 1610
  • 3 - device 1614
  • 4 - device 1620
  • 5 - device 1624
  • 6 - device 1630
  • 7 - device 1634

positions 8 - 15 is not allowed.

• Thumbwheel 3 - HDLC device number
  • 0 - HDLC 1 - device 1640 - ident 150
  • 1 - HDLC 2 - device 1660 - ident 151
  • 2 - HDLC 3 - device 1700 - ident 152
  • 3 - HDLC 4 - device 1720 - ident 153
  • 4 - HDLC 5 - device 1740 - ident 154
  • 5 - HDLC 6 - device 1760 - ident 155
  • 6 - HASP 1 - device 560 - ident 156
  • 7 - HASP 2 - device 620 - ident 157
  • 9 - HASP 3 - device 700 - ident 160
  • 9 - HASP 4 - device 720 - ident 161
  • 10 - HASP 5 - device 1500 - ident 162
  • 11 - HASP 6 - device 1520 - ident 163

Switches are read 4321, switch on = 1, switch off = 0

• 13A switch -
  • xx00 - X.21
  • xx01 - Computer link
  • xx10 - V.35
  • xx11 - V.24 / X.21 bis
• 17G switch -
  • ---0 - disable MCL
  • --0- - disable LOAD
  • -0-- - disable RML
  • 0--- - disable CLOAD
• 26G switch -
  • xx0x - disable Abaud rate osc.
  • x0xx - disable main clock

Connectors

The A and B connectors are used for I/O, the C connector is used for the ND-100 Bus.

I/O Devices on the card

none?

ECO

ECO or Engineering Change Order is a hardware change. Here is a list of known ECO's for this card.

• ECO 100-753E - System corruption if many DMA-controllers and ND-110 (3095 print) or ND-120 as CPU

Reference

• Norsk Data Document ND–06.015.02 ND-100 FUNCTIONAL DESCRIPTION
• Norsk Data Document ND–30.008.3 EN ND-100 Hardware Maintenance