3032

3032 is the Memory port MPM-4.

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Introduction

What does it do?

Switches and indicators

• GRANT (yellow) : lit when this port has been allocated a memory cycle.
• ADOK (yellow)  : indicates address ok. This port has received a requested on the connected channel; is lit until the next request on the channel.
• REFRESH TIMEOUT: green - normal situation, red - indicating refresh timeout (reset my MCL from master CPU).
• thumbwheel 1 - Interleave bank selector
• thumbwheel 2 - Interleave selector
• Base-setting display
• Upper-limit display
• Lower-limit display
• Base address switches
• Upper limit switches
• Lower limit switches

For Base, Upper and Lower limit switches: the most-significant switch is topmost, and the least-significant switch is closest to the bottom of the card. The address area for a PORT is decided by the setting of lower and upper address limit. The limit-address increments are 64K units.

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?

References

• Norsk Data Document ND–30.008.3 EN ND-100 Hardware Maintenance , page 211