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HP1640A Serial Data Analyzer

HP1640A Serial Data Analyzer

Gotten from Domaine d’Espitalet inheritance.

 

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The machine was dirty but quite complete.

 

 

Internals

 

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The power supply is a linear one and has some nice large elco’s:

 

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These were removed and tested, and all of them tested fine. I removed them and reformed them for 8 hours so that they get used to being under power again.

 

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PSU Board

 

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Side view

 

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Processor board.

 

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Interface board. One of the 8255’s seems damaged..

 

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Display processor

 

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Placement of option board for SDLC (left) and trigger board (right)

 

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SDLC Board

 

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Trigger board

The main CPU is an AM9080, a 8080 clone (1820-2006).

Initial startup

After cleaning the machine started but with an error message:

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U32 was a socketed chip with the HP number 1818-0348 which should be an AM9102DPC, a 1024x1 bit static RAM. Swapping the chip on other places where it is used follows the chip around so it is the chip..