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Index of folder retro-205/software/Demos: Miscellaneous demo programs for the Burroughs 205, as prepared for the retro-205 emulator. Unless otherwise specified, all files are in standard Windows text format, with carriage-return/line-feed delimiters. B205PrimeNumber-Checker.pt Paper tape program to accept 7-digit numbers from the console keyboard and determine whether or not they are prime. On the Control Console, set the INPUT knob to OPTICAL READER, the OUTPUT knob to PAGE, load the program tape, and follow the instructions printed on the Flexowriter. B205PrimeNumber-Table.pt Paper tape program to generate a 10-up table of prime numbers on the Flexowriter. Set up and run the same was as for B205PrimeNumber- Checker.pt above. The output will look best if you set the ZERO SUPPRESS switch on the Flexowriter control panel to ON and the GROUPING/COUNTERS switch to OFF/OFF. The rest of the controls on that panel are ignored. The table starts at 2 and continues until you stop the program. It would take months of continuous running to overflow the 7-digit output field capacity. Fast-Drum-Zero.card Card-image copy of a program found pasted in the back of Donald Knuth's Burroughs 205 Central Computer Handbook, as donated to the Computer History Museum in 2005. See: http://archive.computerhistory.org/resources/text/Knuth_Don_X4100/ PDF_index/k-3-pdf/k-3-u2252-Burroughs205-centralcomputer.pdf. This is the program prepended to the EASY and MEASY assembler load decks. Fast-Drum-Zero.pt Copy of Fast-Drum-Zero.card converted to load and run from paper tape. Fast Drum Zero Program--Decoded.pdf Document containing an annotated disassembly of Fast-Drum-Zero.card. List-Cards-to-Console-Output.card Card-load program to read cards from Cardatron input unit 1 under control of format-band 5 and print the card images to the Flexowriter. List-Cards-to-Line-Printer.card Card-load program to read cards from Cardatron input unit 1 under control of format-band 5 and print the card images to Cardatron output unit 3 (assumed to be an IBM 407). Square-Roots100.pt Paper tape program to print a table of square roots on the Flexowriter. Set up and run the same was as for B205PrimeNumber- Checker.pt above. The arithmetic is done in integer mode, and results are output scaled five digits to the right. Results are usually accurate to about four decimal places. The output will look best with the following settings on the Flexowriter control panel: ZERO SUPPRESS: ON, TAB: SPACE or TAB, GROUPING/COUNTERS: ON/ON, WORDS/LINE: 2, LINES/GROUP: greater than 1, GROUPS/PAGE: anything, AUTO STOP: as desired. Paul Kimpel October 2015