Memory mapped register4/5/2023 ![]() ![]() How used: The operating system shall allocate an SMAP buffer in memory (20 bytes buffer). Segment:offset location of the buffer for result.īase address of memory map region referred to by EBX. (Maximum value: 0x3C00 = 15360KB).Ĭount of configured 64K blocks above 16M.īIOS Function: INT 0x15, AX=0圎820 - GET SYSTEM MEMORY MAP: Ĭontinuation value or 0x0 to start at beginning of map. If no error, the routine returns with CF clear and the state of registers is described as following:Įxtended memory between 1M and 16M, in KB. If some error has happened, the routine returns with CF (Carry Flag) set to 1. The caller sets AX to 0圎801 then executes int 0x15. It is supported by AMI BIOSses dated Augor later. This BIOS interrupt call is used to get the memory size for 64MB+ configurations. These memory maps are used to resolve memory addresses (such as function pointers) to actual symbols.īIOS for the IBM Personal Computer and compatibles provides a set of routines that can be used by operating system or applications to get the memory layout. In native debugger programs, a memory map refers to the mapping between loaded executable(or)library files and memory regions.In virtual memory implementations and memory management units, a memory map refers to page tables or hardware registers, which store the mapping between a certain process's virtual memory layout and how that space relates to physical memory addresses.It contains the information regarding the size of total memory, any reserved regions and may also provide other details specific to the architecture. In the boot process, a memory map is passed on from the firmware in order to instruct an operating system kernel about memory layout.The associative memory stores both the address and content of the memory word. It is the fastest and most flexible cache organization that uses an associative memory.The term "memory map" can have different meanings in different contexts. ![]() ![]() In computer science, a memory map is a structure of data (which usually resides in memory itself) that indicates how memory is laid out. Not to be confused with Memory-mapped file. ![]()
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