Monday, October 26, 2026

Assembled and tested the Teletype ASR-33 paper tape reader power supplies

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MISSING PAPER TAPE READER POWER SUPPLIES CAN IMPACT A TELETYPE RESTORATION The paper tape reader on the left side of the model 33 ASR telety...
Friday, October 23, 2026

Built my signal sledgehammer for the Virtual 2315 Cartridge Facility and gave it a test

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SIGNAL ISSUES TO BE ADDRESSED BY THE CONDITIONER Certain signals produced by the Virtual 2315 Cartridge Facility (V2315CF) that drive logic ...
Thursday, October 22, 2026

Parts arriving and work begins on both Schmitt Trigger Conditioner and the ASR-33 Reader Power Supply

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PCBS AND ALL COMPONENTS CAME TODAY FOR THE CONDITIONER The boards arrived from JLCPCB today, the components that came earlier this week from...
Sunday, October 18, 2026

Quick side project - power supply for ASR-33 Teletype automatic tape reader

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LEARNED THAT SOMEONE RESTORING ASR-33'S LACKED THE POWER SUPPLY The Teletype ASR-33 comes with a paper tape reader attached to the left ...
Thursday, October 15, 2026

Bringing out the signal sledgehammer - dealing with the signal quality issues for the Virtual 2315 Cartridge Facility

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GLITCHES CAUSING PROBLEMS IN SOME FUNCTIONS Virtual 2315 Cartridge Facility (V2315CF) attaches to an IBM 1130 computer system, working with ...
Saturday, October 10, 2026

Results of latest logic analyzer capture of write on Virtual 2315 Cartridge Facility

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CAPTURE SET UP TO UNDERSTAND WHY WE ARE BUMPING ADDRESSES WEIRDLY The observed symptom was that when I did an XIO Write command with a buffe...
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Wednesday, October 7, 2026

Debugging the double increment of addresses during a write by the Virtual 2315 Cartridge Facility

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MISSING DATA DURING A WRITE APPEARS TO BE A MEMORY ADDRESSING ISSUE When writing a sector of 321 words to the Virtual 2315 Cartridge Facilit...