Abstract
Description of how a bubble memory operates is given, and the increases in bubble densities since the mid 1970s are outlined. The advantages of the bubble memory over the floppy disc drive are weighed up. The conclusion made is that for ‘working storage’ — software compilation, operating system utilities, system interface functions etc. — the bubble memory is best, whereas for ‘archival storage’ — system initialization, software distribution, out-of-system storage etc. — the floppy disc is still superior. Implementation of an Intel 7110 1 Mbit bubble memory is described using a purpose-built controller which provides the hardware interface with a TTL-level microprocessor bus. Modification of the floppy disc operating system to take into account the bubble memory is also shown.
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