tops-10

_posts/2024-07-06- tops-10.md

@@ -11,10 +11,8 @@ by the third and fourth weeks, attention shifted to tops-10. this post is simply
 
 first of all, the concept is to do some numerical code in assembly. and naturally, fortran as well. to make this concrete, to reproduce some of what feynman is discussing towards the end of [this chapter here](https://www.feynmanlectures.caltech.edu/I_22.html). purely for the pleasure of ideas. for actually doing this, the [gorin book](https://archive.org/details/introductiontodecsystem10assemblylangpgmgjul85text) seems to be a reasonable starting point. it's tops-10, macro, ddt based. and for fortran, there's [this from 69](https://bitsavers.org/pdf/dec/pdp10/TOPS10/DEC-10-AFC0-D_PDP-10_FORTRAN_IV_Programming_Manual_Aug69.pdf) and [this from 77](https://bitsavers.org/pdf/dec/pdp10/TOPS10/AA-0944E-TB_FORTRAN-10_Programmers_Reference_Ver_5_Jan77.pdf). 
 
-and then, secondly and lastly. [decwar](http://hsnewman.freeshell.org/decwar.htm). official utaustin [catalog record](https://repositories.lib.utexas.edu/items/e0e0aa09-2dc3-49c5-a919-19210d7916d3/full). again, fortran and assembly.
-
-while working on the previous paragraph, some questions were answered by the [wikipedia page](https://en.wikipedia.org/wiki/Decwar#Other_versions). especially note the following.
+and then, secondly and lastly. [decwar](http://hsnewman.freeshell.org/decwar.htm). official utaustin [catalog record](https://repositories.lib.utexas.edu/items/e0e0aa09-2dc3-49c5-a919-19210d7916d3/full). again, fortran and assembly. while writing this, some questions were answered by the [wikipedia page](https://en.wikipedia.org/wiki/Decwar#Other_versions). especially note the following.
 
-_Later the CIS (CompuServe Information Service) version of Decwar was released to the public by The University of Texas. This version was highly modified to run on CIS's version of TOPS-10. Merlyn Cousins (Drforbin) later reverse engineered the source back to a form which would run on standard TOPS-10 and simh. This code is archived at the Briscoe Center for American History.[8] The source is also available on GitHub.[9])_
+_Merlyn Cousins (Drforbin) later reverse engineered the source back to a form which would run on standard TOPS-10 and simh. This code is archived at the Briscoe Center for American History.[8] The source is also available on GitHub.[9])_
 
 note - while creating this post, stumbled on this highly recommendable [article from 88](https://www.columbia.edu/cu/computinghistory/dec20.html). fun read. laughing out loud.