General purpose parallel port interface

Details General purpose parallel port interface General purpose parallel port interface

1994-07-01

1995-02-14

Harrell, Robert B.

Boots, shoes, and leggings

364DIG1, 364DIG2, 364235, 3642362, 36492792, 364930, 364952, 3649521, G06F 1300

Patent

active

053903218

ABSTRACT:
A general purpose interface is provided for connecting a floppy disk drive to a parallel port of a personal computer. The interface comprises an interface circuit and software driver circuit operated by the CPU. The interface circuit emulates the internal bus circuit in the CPU and can be used with virtually any disk controller. The interface circuit uses gate arrays as state machine logic elements to perform various functions, eliminating requirements for a microprocessor and plural memory chips.

REFERENCES:
patent: 4639863 (1987-01-01), Harrison et al.
Pacific Rim Systems advertisement on p. 96 of Byte Magazine (Oct. 1988).
"Hard Drive to go What's New" Portable Computer Review (Apr. 1, 1990) vol. 5, No. 4, p. 61.
Cohen, Alan "New and Improved: News of announced products and upgrades", P.C. Magazine, vol. 9, No. 2 (Jan. 30, 1990) (pp. 53-57).
Iomegon Corporation "The New Bernoulli Any System, Any Place" Byte (Nov. 1990).

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