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- Path: sparky!uunet!cs.utexas.edu!sun-barr!news2me.EBay.Sun.COM!exodus.Eng.Sun.COM!peregrine!falk
- From: falk@peregrine.Sun.COM (Ed Falk)
- Newsgroups: comp.sys.palmtops
- Subject: Re: PCMCIA Card Drive (external)
- Date: 16 Dec 1992 22:49:08 GMT
- Organization: Sun
- Lines: 29
- Message-ID: <livcj4INN7tf@exodus.Eng.Sun.COM>
- References: <1992Nov28.125752.24536@eng.umd.edu> <lidc2uINN1ul@exodus.Eng.Sun.COM> <1g6ctiINNot4@uwm.edu>
- NNTP-Posting-Host: peregrine
-
- In article <1g6ctiINNot4@uwm.edu> anthony@csd4.csd.uwm.edu (Anthony J Stieber) writes:
- >In article <lidc2uINN1ul@exodus.Eng.Sun.COM> falk@peregrine.Sun.COM (Ed Falk) writes:
- >>Q: how much do flash cards cost nowadays? And why doesn't someone make
- >>EPROM cards?
- >
- >"Flash" memory _is_ EPROM, it's more properly called "Flash EPROM". All
- >it is is EPROM that is erased electrically rather than with ultraviolet
- >light.
-
- I normally classify memory like so:
-
- ROM Read Only Memory. programmed at factory. Cheap in large
- quantities, Expen$ive in small quantities
- PROM Programmable ROM. Programmed (once) in lab. Relatively
- cheap in small quantities. Not available for HP95
- EPROM Erasable PROM, Programmed in lab, erased with UV light.
- Relatively cheap, Not available for HP95
- EEPROM Electrically Erasable PROM. Flash cards are available
- for HP95, but are too expensive.
-
- Flash memory is a kind of EEPROM. It's as expensive as SRAM. I was
- hoping to find something that would be economical in small quantities.
- If someone made a PROM or EPROM PMCIA card, that would be ideal.
-
-
-
- -ed falk, sun microsystems
- sun!falk, falk@sun.com
- "Towards the end, the smell of their air began to change"
-