1.4.1.7 - Norsk Data hardware - ND-500

Description

• The BCD arithmetic in the ND-500/2 CPU.
• Using 16 pieces of SRAM chips, 16 x 4 bits x 16 (total 128 bytes).
• Typical position is #27 in the ND-500/2 crate.
• Print: A   ECO: D
• PCB size 405 x 280 mm, 4 layers
• Release date xx. xxx. xxxx

Chipset

• 07600A x 17 pieces
• 07700A x 8 pieces
• 07800A x 4 pieces
• 07900A x 4 pieces
• 08100A
• 08300A
• 08301A
• 08302A
• 08303A
• 08304A
• 08305A
• 08306A
• 08307A
• 08308A
• 08309A
• 08310A
• 08400A
• 08401A
• 37000A
• 37001A
• 37002A
• 37003A
• 37004A
• 37005A
• 37006A
• 37007A
• 37100A x 8 pieces
• AM27S07 - SRAM x 16 pieces

LEDs

• LED 1 (green) - Power on (5V present)
• LED 2 (yellow) - BCD arithmetic active

Straps

• None

Switches

• None

Connectors

• (A) Standard ND-500 bus
• (B) Standard ND-500 bus
• (C) Not present
• (D) Standard ND-500 bus