Finished with volume 3 of 4 ALDs, entering remaining device controller signals

176 OF 226 PAGES ENTERED THROUGH END OF VOLUME 3

At this point I have recorded 3,137 signal pins that are outputs or run over backplane to backplane cables. This is 78% of the way through the ALD pages, although I may have enough to enter the 2501 device controller pages which are an additional 24 pages. They are a bit blurry and may have details chopped off, rendering them unsuitable for entry to the database.

PAGES THAT REMAIN ARE CERTAIN DEVICE CONTROLLERS

The coming pages are sections that begin with XP, XR, XT and XW. If the 2501 controller pages are good enough, those begin with FR. 

XP pages are for the 1132 Line Printer, consisting of 13 pages of logic.

XR pages support the 1442 Card Reader/Punch, consisting of 21 pages of logic.

XT pages support the 1134 and 1055 Paper Tape Reader and Punch respectively, consisting of 11 pages of logic.

XW pages support the 1053 Console Printer, an Input-Output Selectric that is print only. This consists of 5 pages of logic.

EXAMPLE OF AN ALD PAGE FOR A DEVICE CONTROLLER

This page produces 13 output signal pins and 1 connector cable pin into the database. There are ten named output signals but some are connected to more than one card pin, e.g. +Pwr Reset or NPRO which connects to both A-B1-J3-D10 and A-B1-B3-J04 pins.