Talk:Read-only memory

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Contributed text (placement) instruction==

Put your text for the new page here. Explain the differences between Random Access Memory and Read Only Memory in computer memory (main storage)

Contents

[edit] Game emulation ROMs not really ROMs

The paragraph about game emulation ROMs probably shouldn't be in this article; they aren't actually read-only memory. --Dinojerm

Hmm, I suppose you're right, but also consider that the emulation ROMs is extracted/copied from the actual ROMs in the case of cartridge games -- this should be mentioned in the article. --Wernher 09:30, 10 Dec 2004 (UTC)

[edit] Lower-case article title Wikipedia 'policy'

Just regarding my recent revert from Read-Only Memory to Read-only memory in the article's emphasised title phrase: that is the WKP policy, actually. Cf. also a very large amount of similar articles. --Wernher 02:18, 17 Apr 2005 (UTC)

[edit] Writeable ROM

The article currently contains the following statement:

With ROM, the entire chip must be written at the entire chip must be written at once. Changing just one bit requires the whole chip to be erased and re-written with the new data.

Generally, speaking, this is wrong. Most programmable ROM designs (that is, not factory-programmed masked ROMs) allow you to blow bits individually, it's just that you can only blow them in one direction. For example, a certain technology xPROM may be erased to all zeroes or come from the factor as all zeroes, and you can blow ones into it, but you can't individually convert those bits back to zeroes and it for non-erasible PROMs it isn't possible to convert them back to zeroes at all. (Once the fuse or antifuse is blowm its blown.) And a few ROMs allow bidirectional blowing, but the writing process is much slower than the reading process, unlike RAM.

We should work on making the statement more-accurate. I'll do it if I get the time, but please feel free to beat me to it. ;-)

Atlant 21:09, 14 February 2006 (UTC)

[edit] "The small quartz window admits ultraviolet light during erasure."

Shouldn't this be "emits"?

No. Wizzy 06:43, 17 July 2006 (UTC)
No, light doesn't come out of (isn't "emitted" by) the window during erasure, it is let in ("admitted"). The light comes from an external germicidal lamp) which is emitting UV-C light.
Atlant 12:13, 17 July 2006 (UTC)

[edit] Lead assumes familiarity?

I think that if a reader was completely unfamiliar with the concept of ROM, the current lead would be jarring. It somehow seems to assume a greater familiarity with the concept of ROM than an article on ROM should. I'm not sure how to fix it. --Steven Fisher 22:19, 29 December 2006 (UTC)


[edit] Sprite based graphics?

Can someone confirm to me whether 2D sprite based graphics are better suited towards ROM boards(games like Street Fighter III for example)? (UTC)

[edit] Extensive rewrite

I've rewritten most of the article, and added a history section. Would love to have some eyeballs look at this stuff, and hopefully improved! MOXFYRE (contrib) 21:00, 14 May 2007 (UTC)

The article looks good! But shouldn't we say something about NOR-Flash to go with all the words about NAND-Flash?
Atlant 23:48, 14 May 2007 (UTC)
Thanks! AFAIK, NOR flash doesn't differ greatly from "normal" EEPROM except in that it must be erased in large blocks (which led to the name "flash"). If anyone knows more technical details I'd love to add 'em! MOXFYRE (contrib) 00:32, 15 May 2007 (UTC)