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- Path: ns-mx!uunet!jarthur!usc!wuarchive!cs.utexas.edu!asuvax!noao!rutgers!att!cbnewsd!dcn
- From: dcn@cbnewsd.ATT.COM (david.c.newkirk)
- Newsgroups: alt.folklore.computers
- Subject: How Virtual Memory Really Works (or Doesn't Work...)
- Keywords: I/O Deja Vu from old Creative Computing
- Message-ID: <14498@cbnewsd.ATT.COM>
- Date: 4 May 90 14:06:04 GMT
- Organization: AT&T Bell Laboratories
- Lines: 71
-
- The recent posting about the Thing King reminded me of a similar parody in
- an old Creative Computing magazine - enjoy!
-
-
- I/O Deja Vu - A Farce in One Act
- --------------------------------
-
- IBOX: Hello, CACHE? I'd like the data for location 54321.
-
- CACHE: I'm sorry sir. I don't have that data. Just a moment and I'll
- try to get it for you.
-
- CACHE: Hello, MAP? I need the address for location 54321.
-
- MAP: I don't have that address, sir. That address is stored at location
- 76543. Just a moment and I'll try to get it for you. Hello, I/O
- control? I need the data from location 76543.
-
- I/O: Just a moment. I'll try to get it. Hello, CACHE? I need the data
- from location 76543.
-
- CACHE: I don't seem to have that data, and I'm not about to get it.
-
- I/O: Hello, MAP? What is the address for location 76543?
-
- MAP: That address is 222543.
-
- I/O: Hello, CORE? What is the data at 222543?
-
- CORE: That data is INDIRECT PAGE TABLE 21, PAGE 44.
-
- I/O: Hello, MAP? That data you wanted is INDIRECT PAGE TABLE 21, PAGE 44.
-
- MAP: Fine. Now I need INDIRECT PAGE TABLE ENTRY 21. That would be
- stored at location 556. Would you get me the data at 556?
-
- I/O: I'll try. Hello, CACHE? I need the data from location 556.
-
- CACHE: That data is 6767.
-
- I/O: Hello, MAP? That data you wanted is 6767.
-
- MAP: Good. Now, let's see. 6767 plus 44 is 7033. Now, get me the data
- at 7033.
-
- I/O: Hold on. Hello, CACHE? I need the data from location 7033.
-
- CACHE: I'm sorry. I don't have that data. You'll have to get it from CORE.
-
- I/O: Hello, MAP? I need the address for location 7033.
-
- MAP: I'm sorry. I don't seem to have that address. I'll try to get it,
- but I'll probably forget what I was doing before, so you might as
- well too.
-
- MAP: Hello, I/O? I'm trying to get the address for 7033. That data should
- be stored at location 112233. Would you try to get me that data?
-
- I/O: (sigh) I'll try. Hello, CACHE? I need the data from location 112233.
-
- CACHE: That data is 4242.
-
- I/O: Hello, MAP? That data you wanted is 4242.
-
- MAP: I'll store that away. HEY IBOX, I just stored something.
-
- IBOX: Hello, CACHE? I'd like the data for location 54321.
-
- CACHE: I'm sorry sir. I don't have that data. Just a moment and I'll try...
- --
- Dave Newkirk, att!ihlpm!dcn