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)
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[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, 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)
