1.4.1.5 - Norsk Data hardware - ND-100

Description

• SCSI (DL or SE) and floppy interface.
• Using 1 piece of SRAM chip, 8192 x 8 bits x 1 piece (total 8 KB).
• Print: A   ECO: J
• Print: B   ECO: J
• PCB size 367 x 280 mm, 8 layers
• Release date 05. Nov. 1990

Chipset

• 00900B
• 05800B
• 34500B
• 35700A
• 42200A
• 42201A
• 42500A
• 45800A
• 45900E
• 78100A
• 78200A
• 78300B
• 78400B
• AM9517 - DMA controller
• FD1797 - Floppy Disc controller
• NCR5386 - SCSI protocol controller
• TMM2063 - SRAM
• Z80 CPU - CPU
• Z80 CTC - CTC x 2 pieces

LEDs

• Z80 DMA (yellow) -
• BUSY (yellow) -
• REQ (yellow) -
• Floppy error code display

Straps

• 1887A2

Switches

• TH2 - SCSI ident
• TH1 - SCSI device no.
• TH3 - Floppy device no.

Connectors

• (A) Floppy bus
• (B) SCSI bus
• (C) Standard ND-100 system bus