1.4.1.5 - Norsk Data hardware - ND-100

Description

• Megalink interface.
• Using 16 pieces of SRAM chips, 256 x 1 bit x 16 pieces (total 512 bytes).
• Print: B   ECO: M
• Print: D   ECO: M
• Print: K   ECO: M
• PCB size 367 x 280 mm, 4 layers
• Release date xx. xxx. xxxx

Chipset

• 00000B
• 00001B
• 00100C
• 00101C
• 00102C
• 00103C
• 00110C
• 00111C
• 00112C
• 00113C
• 01900B
• 02000A
• 4702 - Programmable Bit Rate Generator
• AM2901 - 4 bits microprocessor slice x 4 pieces
• COM5025 or
  SCN2652 - MPCC
• SN74201 - SRAM - 16 pieces

LEDs

• LD1 (yellow) - STOSC - Transmitter clock is not running

Straps

• None

Switches

• TH1 - Baudrate
• TH3 - Device number
• TH2 - Autoload device number
• Clock enable switches
• Load enable switches
• Busy enable/disable switches

Connectors

• (A) Autoload
• (B) Communications channel
• (C) Standard ND-100 system bus