Friday, April 11, 2025

Running IBM disk diagnostic 309 against the Virtual 2315 Cartridge Facility - part 7

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RESTARTING THE TESTING IN REAL MODE With the V2315CF set to real mode, the 13SD disk drive inside the IBM 1130 is powered on and participate...

Debugging work on the seek issue with Virtual 2315 Cartridge Facility in real mode

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NEED TO NARROW DOWN POSSIBLE DEFECT LOCATIONS It is possible that something in the signal returning from the 2310 (13SD) disk drive inside t...
Thursday, April 10, 2025

Found and corrected reason that magic smoke was released

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PUFF OF SMOKE FROM V2315CF MAIN UNIT WHEN FIRST CONNECTED TO IBM 1130 The Virtual 2315 Cartridge Facility (V2315CF) main unit was the second...

Mystery smoke when testing second V2315CF main unit

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TWO UNITS BUILT FOR TO MUSEUM MACHINES I had constructed a Virtual 2315 Cartridge Facility (V2315CF) for the IBM 1130 I am currently restori...
Tuesday, April 8, 2025

Running IBM disk diagnostic 309 against the Virtual 2315 Cartridge Facility - part 6

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NEW PICO SOFTWARE SHOWS CYLINDER SEEN IN V2315CF The Virtual 2315 Cartridge Facility (V2315CF) uses a Raspberry Pi PICO as the user interfac...

Found a solution to building the code for the PICO processor - Google Colab

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BATTLING VARIOUS BRICK WALLS WITH VISUAL CODE ON WINDOWS I put in too many hours trying to figure out why I couldn't simply build the ex...
Saturday, April 5, 2025

Running IBM disk diagnostic 309 against the Virtual 2315 Cartridge Facility - part 5

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STILL INVESTIGATING FAILURE TO STAY SYNCED DURING SEEK OPERATIONS During my testing of the Virtual 2315 Cartridge Facility (V2315CF) I disco...