On Mon, Nov 30, 2015 at 3:13 PM, Chuck Guzis <ccl...@sydex.com> wrote:
> On 11/30/2015 02:09 PM, Mike Stein wrote: > >> Nothing wrong with what you wrote that I can see; excellent tutorial >> IMO. >> > > The issue of "floppy interleave" pretty much went away when memory got > cheap enough to buffer an entire track, provided the controller is capable > of 1:1 interleave transfers. > > An A-B comparison with interleaved vs. track buffering is quite > enlightening. > > I don't think that any modern hard drives use interleaved transfer, but > I'm not certain. > > Interleaving core accesses goes *way* back, as does using extra-wide > multi-word-at-a-time transfers. > > Did the IBM 650 interleave drum sectors? > > One of the drum computers had the address of the next instruction as an operand of the instruction; the programmer would scatter the instructions according to the execution time of the instructions; IIRC "assembler" referred to the process of converting the sequential source to the scattered arrangement. -- Charles