1.4.1.5 - Norsk Data hardware - ND-100

Description

• Bus controller.
• Using interrupt level 13.
• Up to 32 controllers can be installed, later reduced to max 16.
• Print: A   ECO: K
• PCB size 367 x 280 mm, 4 layers
• Release date xx. xxx. xxxx

Chipset

• 300067 Microprogram
  • 06700A

LEDs

• LD3 (yellow) 2us timeout indicator
• LD2 (yellow) Adapter OK
• LD1 (yellow) Refresh disable indicator
• BASE memory address display
• UPPER limit display
• LOWER limit display

Straps

• None

Switches

• SW2 Timeout select switch
• SW1 Refresh disable switch
  SW1 Extended device number switch, if the ECO is less than J
• TH1 Interleave selector
• TH2 Device number
• SW3 Base address, low
• SW4 Base address, high
• SW5 Upper limit, low
• SW6 Upper limit, high
• SW7 Lower limit, low
• SW8 Lower limit, high

Connectors

• (A) Memory bus
• (B) Memory bus
• (C) Standard ND-100 system bus