3027: Difference between revisions
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==Reference== | ==Reference== | ||
{{ND-doc|06.015.02}} | *{{ND-doc|06.015.02}} | ||
*{{ND-doc|11.015.01}} | |||
*{{ND-doc|30.008.3 EN}}, page 199 | |||
[[Category:ND-100 hardware]] | [[Category:ND-100 hardware]] | ||
Latest revision as of 16:26, 14 January 2018
3027 is the Floppy disk controller for DMA.
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This article is a stub. You can improve NDWiki by expanding it. |
Introduction
A floppy controller for 8 inch floppy drives.
Switches and indicators
From top of the card
A three digits error code display. After Master Clear, the floppy controller will start a selftest. If successful, 000 will be shown, else an error code is displayed here. During transfer 000 is normally displayed. If an error occurs, and "E" with an error code is displayed.
A device number thumbwheel switch
- 0 - floppy disk system no 1 - device number 1560 (octal) - Ident = 21
- 1 - floppy disk system no 2 - device number 1570 (octal) - Ident = 22
Setting 2-15 are unused, will answer on IOX 0-7.
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
not described yet.
See also
Reference
- Norsk Data Document ND–06.015.02 ND-100 FUNCTIONAL DESCRIPTION
- Norsk Data Document ND–11.015.01 FLOPPY DISK CONTROLLER - 3027
- Norsk Data Document ND–30.008.3 EN ND-100 Hardware Maintenance , page 199