<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Helvetica Neue'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">Al,</span></div>
<br><div><div>On 24 May 2014, at 3:36 PM, <<a href="mailto:simh-request@trailing-edge.com">simh-request@trailing-edge.com</a>> <<a href="mailto:simh-request@trailing-edge.com">simh-request@trailing-edge.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: 'Helvetica Neue'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="font-family: monospace; ">On 5/24/14 2:42 PM, Larry Baker wrote:<br><blockquote type="cite">While I've been helping Cory to copy his TAP mag tape image file to a real TK50, I've discovered that the TAP image he's been using does not correctly follow Bob Supnik's SIMH Magtape Representation<br></blockquote><blockquote type="cite">and Handling document (<a href="http://simh.trailing-edge.com/docs/simh_magtape.pdf">http://simh.trailing-edge.com/docs/simh_magtape.pdf</a>). I don't know how SIMH TAP images get created.<br></blockquote><br>If he's taking them from bitsavers, they ARE NOT SIMH .tap images.<br></span></span></blockquote><div><br></div><div>I downloaded the problem SIMH tape image from <a href="ftp://ftp.trailing-edge.com/pub/rsts_dists/rstse_v10_1_install_sep10_1992.tap.bz2">ftp://ftp.trailing-edge.com/pub/rsts_dists/rstse_v10_1_install_sep10_1992.tap.bz2</a>. That's not BitSavers, right?</div><div><br></div>I downloaded a valid SIMH tape image from <a href="http://bitsavers.trailing-edge.com/bits/DEC/pdp11/magtapes/rsx11mplus/BB-3077D-SC_RSX-11M+_V3.0_SRC_1985.tap">http://bitsavers.trailing-edge.com/bits/DEC/pdp11/magtapes/rsx11mplus/BB-3077D-SC_RSX-11M+_V3.0_SRC_1985.tap</a>. Which is BitSavers, right?</div><div><br><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: 'Helvetica Neue'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="font-family: monospace; ">Bob came up with his modifications after I wrote my tape recovery software, and I used John Wilson's .tap format.<br></span></span></blockquote><div><br></div><div>I don't know how John's format differs from Bob's. Is there a reference online you can point me to?</div><br><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: 'Helvetica Neue'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="font-family: monospace; ">It would have been nice if the trailer record saying what revision of .tap was being used that I proposed was adopted,<br>but it never was.<br></span></span></blockquote></div><div><br></div>Thanks,<div><br><div>Larry Baker<br>US Geological Survey<br>650-329-5608<br><a href="mailto:baker@usgs.gov">baker@usgs.gov</a><br><br></div></div></body></html>