1.4.1.5 - Norsk Data hardware - ND-100

Description

• The SMD disc controller is split over two cards, control and data. The controller is handling all control and setup functions.
• Special version to handle only one single fixed interface.
• Print: C   ECO: M
• Print: G   ECO: M
• Print: H   ECO: M
• Print: L   ECO: M
• PCB size 367 x 280 mm, 4 layers
• Release date 11. May. 1987

Chipset

• 300349 PROM microprogram
  • 34900A
  • 34901B
  • 34902C

LEDs

• WG (yellow) - Write gate
• RG (yellow) - Read gate
• WF (yellow) - Write format
• RP (yellow) - Read parity
• COMP (yellow) - Compare
• ECC (yellow) - Error correction

Straps

• None

Switches

• SW1 (E7) - External cable selector (missing entries are illegal):
  

  All off	Round cable
  All on	Ribbon cable

Connectors

• (A) Control lines
• (B) Data lines
• (C) Standard ND-100 system bus