About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
IEEE Transactions on Magnetics
Paper
Passive Swap Gate Designs for Contiguous Disk Bubble Devices
Abstract
The designs of two novel passive swap gates for contiguous disk devices are described. The data swap is activated by temporary reversal of the drive field rotation direction. Two buffer loops with four merge gates are combined to form a synchronous swap. (true swap) gate. This approach resolves the data overlapping problem and allows flexibility for the matching of the data paths. The structure is sufficiently simple so that it can be used for block swap operation. However, to swap the complete data on the major loop section this arrangement requires two sets of reverse-forward field rotations. For an asychronous block swap operation, a single buffer loop with three merge gates (per swap gate) can be used. Only one. set of reverse-forward rotations is required to achieve a complete swap. In this case, the block of data that transfers out is shifted by a fixed bit length. © 1982 IEEE