Browse Prior Art Database

Use Combo Memory Card as Two Diskettes

IP.com Disclosure Number: IPCOM000115251D
Original Publication Date: 1995-Apr-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Ng, KK: AUTHOR

Abstract

An idea of using a PCMCIA Combo card as two removable diskettes drives in a PC system is disclosed. It assumes the PCMCIA memory hardware contains two memory regions. In the PCMCIA Combo memory hardware, there is Flash memory as well as SRAM memory regions.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Use Combo Memory Card as Two Diskettes

      An idea of using a PCMCIA Combo card as two removable diskettes
drives in a PC system is disclosed.  It assumes the PCMCIA memory
hardware contains two memory regions.  In the PCMCIA Combo memory
hardware, there is Flash memory as well as SRAM memory regions.

      The FLASH and SRAM combination memory PCMCIA card (Combo memory
card) utilizes both non-volatile FLASH and battery backed volatile
SRAM memory modules to increase flexibility to the user.  There is no
standard or rule on how to make use of this card.

      The Combo card is treated as a dual partitioned diskette when
inserted in a PCMCIA slot.  The first available drive will be
allocated for FLASH memory region and the second available drive is
for the SRAM memory region.  In the case of multiple memory region
card, they can be used as multiple partitions diskette and hence
multiple system drives.

      Since drive assignment to a PCMCIA slot cannot be requested at
run-time, the assignment has to be done at the block device driver
initialization time.  Once it has been assigned, it no longer be
dynamically changeable.  Thus for a Combo card support, two drives
should be assigned for a PCMCIA slot.