Sunday, January 9, 2022

Observations from analyzer trace leads to verification of logic on Clock card

›
 OBSERVATIONS FROM THE LOGIC ANALYZER TRACE Picking a card starts a timer while circuitry waits for the leading edge of a card to block one ...
Saturday, January 8, 2022

Gremlin found and exterminated; M1000 card reader still not working

›
 THE CLUE THAT LED ME TO THE PROBLEM I noticed that at some positions of the card cage, which was unfastened to let me get to the rear conne...
Thursday, January 6, 2022

Found undocumented modifications to both Documation readers that cause problems

›
 INVESTIGATING THE ISSUE WITH RIGHT HAND DIAGONALLY NOTCHED CARDS The Documation does error checking by testing whether any light is visible...
4 comments:
Tuesday, January 4, 2022

More erratic behavior from M1000 reader

›
 FAILURE TO COMPLETE A READ CYCLE, MOSTLY I hooked up the reader to my laptop with my modified cardread.exe application, thinking I would be...
Saturday, January 1, 2022

Adjusted M1000, now operational, but right side notch fix not working

›
 ADJUSTMENTS MADE With my spring scale to determine proper belt tension, I was able to set the motor mounts in the proper position so the be...
4 comments:
Friday, December 31, 2021

Varied tasks at shop while waiting for scale and drive belt

›
 WAITING ON TOOL TO FINISH M1000 CARD READER REPAIR In order to set up the card reader after I swapped in a drive belt from the M600, I will...
Thursday, December 30, 2021

Cardread.exe successfully recompiled, now introducing my modifications

›
 RESOLVING THE STRCMPI AND STRNICMP USES TO MAKE THIS COMPILE I wrote my own version of the case insensitive functions strcmpi and strnicmp,...