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- Newsgroups: comp.sys.amiga.misc
- Path: metropolis.nl!news
- From: rbos@metropolis.nl (rbos)
- Subject: The mystery of the lost 1 Kb ChipMem
- X-Nntp-Posting-Host: ppp0-121.metropolis.nl
- Message-ID: <1551.6603T740T2708@metropolis.nl>
- Sender: news@news.metropolis.nl (usenet)
- Organization: Metropolis Internet
- X-Newsreader: THOR 2.2 (Amiga;TCP/IP) *UNREGISTERED*
- Date: Tue, 30 Jan 1996 11:22:35 GMT
-
- Hello everyone!
-
- Maybe someone here can solve this mystery:
-
- When I type avail in the Shell I get the following output:
-
- Type Available In-Use Maximum Largest
- chip 1915000 181128 2096128 1907312
- fast 2663384 1530920 4194304 2653936
- total 4578384 1712048 6290432 2653936
-
- Nothing strange here, or is there... When you check the maximum amount of
- ChipMem availeble and divide it by 1024 (=1 Kb) you will get 2047! Since I own
- a A1200 it should have been 2048 Kb of ChipMem, so where did that 1kB of
- chipmem go?
-
- When I first noticed this it didn't bother me too much, since the remaining
- 2047 Kb is more then enough. But when I started to think about it, I couldn't
- think of one reasoneble explenation. Here are my theories so far...
-
- 1) The A1200 isn't equipped with 2048 Kb, but with 2047 Kb of chipmem on
- the motherboard. This is highly unlikely, since I very much doubt it
- that memorychips of 1023,5 Kb, 511,25 Kb or even 255,125 Kb exist.
-
- 2) The 1 Kb is always used by some strange part of the OS. Again this is
- not very likely, because the OS uses more then one Kb and all those
- other used Kbs can be found under the 'In-Use' colomn of avail.
-
- 3) The 1 Kb is always used by one or more of the custom chips. This is
- the only reasoneble explenation, but why not show the missing 1 Kb
- under 'In-Use' like all the other memory useage.
-
- So if anyone can supply me with the answer to this mystery, please do, since I
- don't have a clue...
-
-
- --
- Robert Bos
-
-