Do your programs crash randomly?
Then your RAM-modules may be faulty. Especially PS-2 (SIMM) modules are very vulnerable
to "static electricity".
Or you have some unused RAM-modules laying around?
No need to worry, like on a harddisk, you can mark bad memory and exclude it from usage.
But first we have to know where exactly the memory is faulty. For this purpose there is an excellent program called MemTest, which should be started without booting (as much free memory as possible). Beforehand, the "DataCache" of the CPU should be disabled with
CPU NODATACACHE NODATABURST NOEXTERNALCACHE
. Now start the "Rotate 32" test and save the result.
Now get Allocate.
Insert at the beginning of your `S:Startup-Sequence':
resident c:Allocate pure Allocate <>NIL: 68900000 100000 Allocate <>NIL: 68B00000 100000 resident Allocate remove
The hexadecimal addresses should, of course, contain the bad memory areas. (Be generous, don't be stingy with a few 100KB or MB (depending on the chip).)
This works with LinUX, too:
Create a `file', where you insert all areas which work 100% okay. For example
2097152 0x68000000 9437184 0x68A00000 1048576 0x68C00000 3670016
and start AmiBoot with -m FileName.
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