forked from PoliEcho-holding-org/kern
Tom-on
707733e449
- Kernel got pretty much deleted, will be rewriting in following days - Bootloader got rewritten, stage1 works, stage2 will be written in following days - Libc is still the same - User will contains userspace stuff - Rewrote makefiles again - Got rid of backup (see previous commits for that) - Image has 1 MBR partition for FAT32 which contains 'kern.bin' file - Remade info files to be more "big project" style (all caps plain text) - Added some dumb docs
27 lines
510 B
ArmAsm
27 lines
510 B
ArmAsm
; Reads sectors from disk
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; eax - LBA
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; cx - Sector count
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; dl - Drive number
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; es:dx - Destination
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read_sectors:
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pusha
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; Fill out Disk Address Packet
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mov si, .da_packet
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mov word [si], 0x10 ; Packet Size and Unused
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mov word [si+2], cx ; Sector count
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mov word [si+4], bx ; Dest. offset
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mov word [si+6], es ; Dest. segment
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mov dword [si+8], eax ; LBA
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mov ah, 0x42 ; Extended read
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clc ; Clear CF
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int 0x13
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.done:
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popa
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ret
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; Disk Address Packet
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.da_packet: equ 0x8000
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