3202: Difference between revisions
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(→Switches and indicators: added description of switches and indicators) |
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==Switches and indicators== | ==Switches and indicators== | ||
* SW3 - Master Clear - normal position = central. This switch may be depressed to give a hardware master clear to the CPU. | |||
* TH1 - ALD select | |||
* TH2 - Baud rate select | |||
* LED3 - self test passed (green) | |||
* LED2 - self test fail (red) | |||
* LED1 - cache OFF (red) | |||
* SW1 - Cache ON, normal position = down. | |||
* LED6 - CPU grant (green) | |||
* LED7 - bus grant (yellow) | |||
* SW2 - Memory OFF, normal position = down. | |||
* LED4 - parity error (red) | |||
* LED5 - parity disable (red) | |||
* SW4 - Parity disable, normal position = down. | |||
* upper limit display | |||
** 000 - memory off (SW2) | |||
** 100 - 2M Bytes onboard memory | |||
** 200 - 4M Bytes onboard memory | |||
** 300 - 6M Bytes onboard memory | |||
==Connectors== | ==Connectors== | ||
Revision as of 19:40, 14 January 2018
3202 is the ND-120 CPU board.
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This article is a stub. You can improve NDWiki by expanding it. |
Introduction
It contains the CPU, bus arbitration logic, memory control, memory and other subsystems. It also has the Real time clock and the I/O for the serial console.
Switches and indicators
- SW3 - Master Clear - normal position = central. This switch may be depressed to give a hardware master clear to the CPU.
- TH1 - ALD select
- TH2 - Baud rate select
- LED3 - self test passed (green)
- LED2 - self test fail (red)
- LED1 - cache OFF (red)
- SW1 - Cache ON, normal position = down.
- LED6 - CPU grant (green)
- LED7 - bus grant (yellow)
- SW2 - Memory OFF, normal position = down.
- LED4 - parity error (red)
- LED5 - parity disable (red)
- SW4 - Parity disable, normal position = down.
- upper limit display
- 000 - memory off (SW2)
- 100 - 2M Bytes onboard memory
- 200 - 4M Bytes onboard memory
- 300 - 6M Bytes onboard memory
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?
ECO
ECO or Engineering Change Order is a hardware change. Here is a list of known ECO's for this card.
- ECO 100-779 - System failing with cache enabled[1]
- ECO 100-785 - Memory out of range, IOX-error[1]
- ECO X01 - New backup battery for the calendar on ND-120 CPU[1]
Reference
- Norsk Data Document ND–30.008.3 EN ND-100 Hardware Maintenance , page 255