3044

3044 is the ECC disk controller SMD data.

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Introduction

What does it do?

Switches and indicators

Indicators

• LED3 ERR - red LED, indicating an exclusive OR of errors
• LED2 CYL - yellow LED, indicating ON CYLINDER
• LED1 START - yellow LED, indicating CONTROLLER ACTIVE
• Thumbwheel device number
  • 0 - 3 are not used
  • 4 = big disk system 3, dev. no. 540 - 547, ident. no. 2
  • 5 = big disk system 4, dev. no. 550 - 557, ident. no. 6
  • 6 - 7 are not used
  • 8 = big disk system 1, dev. no. 1540 - 1547, ident. no. 17
  • 9 = big disk system 2, dev. no. 1550 - 1557, ident. no. 20
  • 10 - 15 are not used

Connectors

The A and B connectors are used for I/O, the C connector is used for the ND-100 Bus.

I/O Devices on the card

none?

See also

3043

References

• Norsk Data Document ND–30.008.3 EN ND-100 Hardware Maintenance , page 231