Second pass at 90%, finishing up 1442 Reader/Punch and then doing 2501 Reader

SLOW GOING WITH CONTROLLER PAGES

I am finding the controller pages, particularly for the printer and card reader devices, to be slower than usual to enter. This is because they spread logic across multiple cards and that means an input signal may be routed to three or four cards and even more pins, each requiring an entry in the spreadsheet. This type of structure tends to be dense on the page making it harder to follow signal lines. 

CONTINUING TO SPOT AND CORRECT ISSUES IN THE DATABASE

Each time I find a netname that hasn't been seen before, it is either a physical input from the peripheral device or it is a typo. That may be a mistyped entry now or the database may have corrupted netnames from earlier entries. I scroll back and forth, which usually clears up the issue. For example, I had a signal where I dropped one digit in the netname, XR41AH4 instead of XR241AH4.