I wrote an interleave formatter for a friend to use on his H89. He had an enormous data file that took for ever to read in BASIC. He couldn't believe it could be made to work so much faster. Dwight
________________________________________ From: cctalk <cctalk-boun...@classiccmp.org> on behalf of Chuck Guzis <ccl...@sydex.com> Sent: Sunday, November 29, 2015 1:56 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: "Bounce buffer" copyright [was Re: flash (or ide) storage for unibus 11?] There were a few systems (such as CP/M) that optimized (or attempted to) interleave depending on use. So, "boot" tracks were 1:1, "directory" may have been 2:1 and user data 3:1. Schemes varied widely. One or two even interleaved side-to-side in addition to "skewing track-to-track. Obviously written by a programmer tasked with the job of "Let's see how fast we can get data on or off this thing". --Chuck