It was just an example to show you why these modes are created and how they work, hope i was some help. even if you have 1 gigabyte of memory, only 1MB of it can be addressed and used. If you ever worked with dos, you know that in dos 16bit addressing is used and therefore the processor is essentially locked into a 16-bit mode which can address approximately 1MB of memory.
if you have 16bits this number changes to 2^16 which is much higher than the previous one and so on. :rolleyes:Īnyway, the point of having 32bit instead of 16 or 8 for example in case of addressing is that with 8bits, you can represent 2^8 addresses, even though you may have more, but only 2^8 8bit long addresses can be addressed and therefore accessed (it's in case you use all 8bits for addressing though, which is not the case, but.). Lol, when i came to this topic i was expecting a conversation about "real Mode" ,"32bit Protected mode" and "64bit protected mode".
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