A poorly written OS for the x86 arch. (WIP)
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eOS/bootloader/bios/memory.asm

22 lines
474 B

; SRs to find memory size and leave it as a "note" for the kernel
3 years ago
; Descriptor Table for address ranges
addr_rng_dt_start:
addr_rng_low: dd 0
addr_rng_high: dd 0
addr_rng_len_low: dd 0
addr_rng_len_high: dd 0
addr_rng_type: dd 0
addr_eng_dt_end:
3 years ago
map_phys_mem_init:
mov ebx, 0
map_phys_mem:
3 years ago
mov eax, 0xE820 ; Function code
; Tell the CPU about the descriptors location (ES:DI)
;mov es, addr_rng_dt_start
3 years ago
;mov di,
mov edx, 'SMAP' ; Signature
int BIOS_PMEM_INT
3 years ago