Table 1. Disk Solutions for Embedded Systems
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Device Interface Comments
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RFA (Resident linear or paged "roll your own" disk, typically has flash
Flash Array) memory mapped mapped into the CPU's address space and
soldered on board
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DiskOnChip memory mapped http://www.m-sys.com
DIP 8/16-bit parallel modular, requires only a chip select and
standard memory read/write strobes
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ATA PC Card memory or I/O http://www.pc-card.com
mapped ATA removable, requires socket and PCMCIA or ATA controller
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Flash PC Card memory mapped http://www.pc-card.com
8/16-bit parallel removable, requires socket and PCMCIA controller
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CF (Compact memory or http://www.compactflash.org
Flash Socket) I/O mapped ATA removable, requires socket and PCMCIA or ATA controller
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IDE/SCSI http://www.m-sys.com
1.3" ATA drop in replacement for standard hard disks
1.8" ATA requires IDE or SCSI controller and cables
2.5" ATA/SCSI
3.5" ATA/SCSI
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SmartMedia 8-bit mixed data http://www.pc-card.com
SSFDC and address, http://www.ssfdc.or.jp
Socket sequential access removable, requires socket and controller or
special interface hardware
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SD 4-bit parallel, http://www.sandisk.com
(Secure sequential removable, requires socket and controller
Digital) access or special interface with hardware
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Memory Stick 1-bit serial http://www.sony.com
removable, requires socket and controller
or special interface with hardware
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