View source for 3020

'''3020''' is the STC magtape controller.

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==Introduction==
What does it do?
==Switches and indicators==
Indicators, from top of the card
*Error - red LED - indicating an error
*RFT - green LED - ready for transfer
*RDYS - green LED - ready status from formatter - selected drive is ready
*HDENS - yellow LED - high density 6250 [[BPI]] ([[CGR]])
*DMAIN - yellow LED - DMA input - read from magtape
*DMAOUT - yellow LED - DMA output - write to magtape
Device number thumbwheel switch
*2 - Magtape system 1, device no. 520, Ident 3
*3 - Magtape system 2, device no. 530, Ident 7
Other positions are unused.
==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?
==Reference==
{{ND-doc|06.015.02}}

[[Category:ND-100 hardware]]