Apparatus for mapping memory PCMCIA cards into I/O window addres

Details Apparatus for mapping memory PCMCIA cards into I/O window addres Apparatus for mapping memory PCMCIA cards into I/O window addres

1997-11-07

2000-06-27

Hajec, Donald

Registers

Records

Conductive

710100, 710101, 711 1, G00K 1906

Patent

active

060796235

ABSTRACT:
An apparatus serves to map internal registers into I/O addresses to select an internal register and perform read and write operations in the I/O address space of the PCMCIA host adapter, using the index mapping mechanism. The apparatus according to the present invention includes a plurality of internal registers for storing an input data, being arranged in the PCMCIA card; a plurality of first AND gates for producing a first control signal in response to index signals from an index register; a plurality of second AND gates for producing a register enabling signal in response to the first control signal and a data write signal from CPU; and a plurality of AND gates means for producing a third control signal outputting data stored in the internal register.

REFERENCES:
patent: 5537558 (1996-07-01), Fletcher et al.
patent: 5796981 (1998-08-01), Abudayyeh et al.
patent: 5812858 (1998-09-01), Nookala et al.

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