170 (NORD-1 card): Difference between revisions
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'''170 Duplex buffer''', is a card that is used in the [[NORD-1]] CPU. | '''170 Duplex buffer''', is a card that is used in the [[NORD-1]] CPU. | ||
[[Image:NORD-1 card 170-c.jpg |300px | thumb | Component side.]] | |||
[[Image:NORD-1 card 170-s.jpg |300px | thumb | Solder side.]] | |||
==Introduction== | ==Introduction== | ||
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The logic diagram is documented in drawing '''2A70'''.<ref>HARDWARE MANUAL NORD 1</ref> | The logic diagram is documented in drawing '''2A70'''.<ref>HARDWARE MANUAL NORD 1</ref> | ||
In the NORD-1 Serial 47 the card is found in position E09 and marked with a sticker "MODEM". The D30 position is occupied by a [[195 (NORD-1 card)|195 Duplex Start-stop buffer]]. | |||
==Switches and indicators== | ==Switches and indicators== | ||
There | There is a trimmer on this board, function unknown. | ||
==BOM== | ==BOM== | ||
Latest revision as of 13:49, 16 July 2016
170 Duplex buffer, is a card that is used in the NORD-1 CPU.
Introduction
The card is made in the standard NORD-1 card format.
| CPU model | Crate position |
|---|---|
| 29 | D30 |
| 35 | D30 |
The logic diagram is documented in drawing 2A70.[1]
In the NORD-1 Serial 47 the card is found in position E09 and marked with a sticker "MODEM". The D30 position is occupied by a 195 Duplex Start-stop buffer.
Switches and indicators
There is a trimmer on this board, function unknown.
BOM
This list contains the logic circuits used, passive components are not listed.
- 6 x 7400
- 2 x 7401
- 3 x 7403
- 4 x 7404
- 1 x 7410
- 1 x 7413
- 1 x 7474
- 4 x 7493
- 2 x 7494
- 2 x 7495
- 1 x MC889P RTL or DTL Hex inverter made by Motorola
Reference
- ↑ HARDWARE MANUAL NORD 1