{"id":25,"date":"2004-06-11T22:00:00","date_gmt":"2004-06-12T05:00:00","guid":{"rendered":"http:\/\/www.mcjones.org\/dustydecks\/archives\/2004\/06\/11\/25\/"},"modified":"2025-10-27T09:55:12","modified_gmt":"2025-10-27T16:55:12","slug":"rob-storey","status":"publish","type":"post","link":"https:\/\/mcjones.org\/dustydecks\/archives\/2004\/06\/11\/25\/","title":{"rendered":"Rob Storey"},"content":{"rendered":"\n

Earlier<\/a> I had learned that Paul Pierce’s web site<\/a> contains images of a number of system tapes for old IBM mainframes. Paul provides some utilities he wrote for making sense of these old tapes, which were written on 7-track drives, with 6-bit BCD characters and 36-bit words.<\/p>\n\n\n\n

Tonight I came across Rob Storey’s emulation web site<\/a>*. He’s written file utility programs<\/a> BCD2IAS, IASMERGE, and FILEBROW that greatly simplify the process of reading, converting, and correcting the tape and card images from Paul Pierce’s web site.<\/p>\n\n\n\n

I played with them for a while, and was able to view some of the Fortran IV compiler sources. More work will be necessary to create “fix records” for errors that BCD2IAS can’t detect by itself — it looks like there are occasional missing characters from blocked fixed-length lines, causing the source code to “drift” cyclicly to the left. But the result will be source code for the IBM 7090 Fortran IV compiler!<\/p>\n\n\n\n

The bad news is that this compiler shares little if any source code from the original IBM 704\/709 Fortran\/Fortran II compiler (in particular, it did not contain the sophisticated code optimization components).<\/p>\n\n\n\n

Rob’s web site also features an IBM 7094 emulator. (Paul Pierce’s web site has an IBM 709 emulator.)<\/p>\n\n\n\n

* As of 2024\/05\/07 Rob’s emulation site is offline, but a snapshot is available from the Internet Archive Wayback Machine. There are also other versions; see https:\/\/github.com\/Bertoid1311\/B7094<\/a>. <\/p>\n\n\n\n

Update 7 Jan 2015:<\/strong> Updated URL for Rob Storey’s emulation web site.<\/p>\n\n\n\n

Update 7 May 2024: Added footnote.<\/p>\n","protected":false},"excerpt":{"rendered":"

Earlier I had learned that Paul Pierce’s web site contains images of a number of system tapes for old IBM mainframes. Paul provides some utilities he wrote for making sense of these old tapes, which were written on 7-track drives, with 6-bit BCD characters and 36-bit words. Tonight I came across Rob Storey’s emulation web … Continue reading “Rob Storey”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,43,7],"tags":[],"class_list":["post-25","post","type-post","status-publish","format-standard","hentry","category-fortran","category-people","category-simulators"],"_links":{"self":[{"href":"https:\/\/mcjones.org\/dustydecks\/wp-json\/wp\/v2\/posts\/25","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcjones.org\/dustydecks\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcjones.org\/dustydecks\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcjones.org\/dustydecks\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mcjones.org\/dustydecks\/wp-json\/wp\/v2\/comments?post=25"}],"version-history":[{"count":5,"href":"https:\/\/mcjones.org\/dustydecks\/wp-json\/wp\/v2\/posts\/25\/revisions"}],"predecessor-version":[{"id":1315,"href":"https:\/\/mcjones.org\/dustydecks\/wp-json\/wp\/v2\/posts\/25\/revisions\/1315"}],"wp:attachment":[{"href":"https:\/\/mcjones.org\/dustydecks\/wp-json\/wp\/v2\/media?parent=25"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcjones.org\/dustydecks\/wp-json\/wp\/v2\/categories?post=25"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcjones.org\/dustydecks\/wp-json\/wp\/v2\/tags?post=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}