1.4.1.7 - Norsk Data hardware - ND-500

Description

• 8K Control Store (μcode memory) in the ND-500/1 and the ND-500/2 CPU.
• Arranged as 8K μcode words of 144 bits each (18 bytes per. μcode word).
• Using 72 pieces of SRAM chips, 4096 x 4 bit x 72 (total 144 KB).
• Typical position is #17 in the ND-500/2 crate.
• Print: A   ECO: A
• PCB size 405 x 280 mm, 4 layers
• Release date xx. xxx. xxxx

Chipset

• 05900A
• IMS1423 or
  TMM2068 - SRAM x 72 pieces

LEDs

• None

Straps

• None

Switches

• None

Connectors

• (A) Standard ND-500 bus
• (B) Standard ND-500 bus
• (C) Standard ND-500 bus
• (D) Standard ND-500 bus