1.4.1.5 - Norsk Data hardware - ND-100

Description

• The SMD disc controller is split over two cards, control and data. This card is handling all the data transports to/from memory.
• Special version for NEC CCIS
• Print: J   ECO: X
• PCB size 367 x 280 mm, 4 layers
• Release date 07. Dec. 1983

Chipset

• 300012 PROM microprogram 01200B
• 300347 PROM microprogram 34700A
• 300348 PROM microprogram 34800A

LEDs

• Error (red)
• On cylinder (yellow)
• Start (yellow)

Straps

• STR.1 and STR.2 (position J22): Transfer rate selection between FIFO and memory. DON'T change this !

Switches

• Device number (missing entries are illegal) (position J9):

  No.	Device name	Device no.	Ident.	Log. dev. no.
  4	Big disk system 3	540B	2B	565B
  5	Big disk system 4	550B	6B	566B
  8	Big disk system 1	1540B	17B	1100B
  9	Big disk system 2	1550B	20B	1207B

Connectors

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