Ďalšia vyznamná linuxová distribúcia nebude podporovať 32-bitové PC
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Re: x86 software
Od: reg.: Houston
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Pridané:
2019-07-16 08:40:24
Jaj keby si aj ty nieco vedel, okrem cisla 48 a pisania "zaujimavosti", vedel by si ze nie vsetky maju AZ 48-bit, ze sa to tyka len adresnych registrov a aj to, ze pravdepodobne nikdy nebudu vsetky 64-bitove.
All general-purpose registers (GPRs) are expanded from 32 bits to 64 bits
The AMD64 architecture defines a 64-bit virtual address format, of which the low-order 48 bits are used in current implementations. This allows up to 256 TB of virtual address space. The architecture definition allows this limit to be raised in future implementations to the full 64 bits, extending the virtual address space to 16 EB.
The original implementation of the AMD64 architecture implemented 40-bit physical addresses and so could address up to 1 TB of RAM.
Current implementations of the AMD64 architecture extend this to 48-bit physical addresses and therefore can address up to 256 TB of RAM.
The architecture permits extending this to 52 bits in the future - this would allow addressing of up to 4 PB of RAM
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