Sunday, September 21, 2014

Disk drive seems to be working well now, plus working further on card reader

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INTERNAL DISK DRIVE RESTORATION I wired up a manual switch temporarily in place of the 90 second timer relay, in order to attempt loading ...

Time with the card reader, running one card diagnostics and adjusting its operation

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1442 CARD READER/PUNCH RESTORATION I received my grease gun accessory kit with a plethora of adapters and fittings, however not a one is u...
Friday, September 19, 2014

Booted diagnostic card from card reader, diagnosing failure of disk drive to load heads, wiring work on new keypunch interface

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1442 CARD READER/PUNCH RESTORATION I polished up and cleaned the metal plates and plastic covers for the various stations where cards will...
Thursday, September 18, 2014

Relatively quiet until Friday 9/19 but a bit of progress on several fronts

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1442 CARD READER/PUNCH RESTORATION The National Museum of Computing in Milton Keynes, UK has a restored 1130 system and I have been the be...
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Wednesday, September 17, 2014

Progress on card reader, internal disk, keyboard, display panel lamps and keypunch interface design

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1442 CARD READER RESTORATION I reassembled the button/light control panel on the card reader and began to examine the mechanical state of ...
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Tuesday, September 16, 2014

Core memory stuck bits fixed, work on card reader and miscellaneous other work

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CORE MEMORY - STUCK BITS RESOLVED!! I only had a few hours tonight to work on the system, but made the memory issue my top priority. I set...
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Monday, September 15, 2014

Extensive diagnostic work on core memory stuck bit problem, work on console printer and keypunch interface designing

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DIGGING THROUGH MEMORY GATE BY GATE Time to switch over from the Tektronix 7000, versatile as it is, since it does not have a storage func...