1.4.1.5 - Norsk Data hardware - ND-100

Description

• Floppy disc (both 8" and 5¼") and Streamer tape controller.
• Up to 3 floppy disc drives can be connected, unit 0, 1 and 2.
• One Streamer drive can be connected, unit 0.
• The streamer drive did not have it's own driver/data field in Sintran III, only accessible from the Backup-System.
• Connected to hardware interrupt level 11.
• Using 2 piece of SRAM chips, 2048 x 8 bits x 2 piece (total 4 KB).
• Print: C   ECO: L
• Print: D   ECO: L
• PCB size 367 x 280 mm, 3 layers
• Release date xx. xxx. xxxx

Chipset

• 00900B
• 05800B
• 34300G
• 34400A
• 34500B
• 34600A
• AD558 - DAC
• AM9517 - DMA controller
• FD1797 - Floppy Disc controller
• HM6116 - SRAM x 2 pieces
• SN74LS461 - 8-bit counter x 3 pieces
• Z80 CPU - CPU
• Z80 CTC - CTC x 2 pieces

LEDs

• Floppy drive error status

Straps

• None

Switches

• TH1 (J8) - Device number (missing entries are illegal):
  

  No.	Device name	Device no.	Ident.	Log. dev. no.
  0	Floppy Controller 1	1560B-1567B	21B	1145B
  1	Floppy Controller 2	1570B-1577B	22B	1156B

Connectors

• (A) Floppy drive(s)
• (B) Streamer drive
• (C) Standard ND-100 system bus