On Sun, 8 Aug 1999, David J. Coffin wrote:
Your algorithm doesn't account for the fact that DRAMhas two dimensions. You have to toggle the A11 and A12 lines to find out the number of columns, and A22-A24 to find out the number of rows.
Ok, but I thought that the chipset will (automaticly) set the correct row number from the DRBs that I constantly program with the size of the previous rows ?
How do I change row otherwise?
Always check both halves of a 64-bit word, in case some-one installed a single SIMM, or mismatched SIMMs, by mistake.
Very good point, will do that.
I have been thinking about doing that, but wouldn't that make me unable to write the bios after that (legally that is) ?
If you can understand their code, reduce it to an algo-rithm, and write your code to that algorithm, it's perfectly legal. (I've seen Award's source. The disassembly is easier to read!)
Use get_PCI() and set_PCI() routines that are incompatiblewith Award's. That will force you to write something completely original.
Wow, now I've got two _totaly_ different opinions on this; that I should not under any circumstance ever disassemble a commercial bios, and now this that it should be perfectly ok to do it. Somebody else got an opinion on this?
/ Niklas
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