Did a google search on Algo B5500 and found this:
ftp://ftp.cs.washington.edu/tr/1970/09/UW-CSE-70-09-04.PDF
ftp://ftp.cs.washington.edu/tr/1970/09/UW-CSE-70-09-04.PDF
https://github.com/pkimpel/retro-b5500
http://www.retrocomputingtasmania.com/home/projects/burrough...