TheCloud/thor-os
1
0
Fork 0
mirror of https://github.com/wichtounet/thor-os.git synced 2025-09-18 17:15:09 -04:00
Code Issues Packages Projects Releases Wiki Activity

Load the C++ kernel from floppy after the asm kernel

Browse Source
This commit is contained in:
Baptiste Wicht 2013-10-26 13:54:46 +02:00
parent a682a77b47
commit fb88b9f78b
1 changed files with 30 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
src/bootloader/bootloader.asm
View File

@ -53,12 +53,6 @@ rm_start:
mov si, load_kernel
call print_line_16
; Loading the assembly kernel from floppy
ASM_KERNEL_BASE equ 0x100 ; 0x0100:0x0 = 0x1000
sectors equ 0x20 ; sectors to read
bootdev equ 0x0
; Reset disk drive
xor ax, ax
xor ah, ah
@ -67,12 +61,18 @@ rm_start:
jc reset_failed
; Loading the assembly kernel from floppy
ASM_KERNEL_BASE equ 0x100 ; 0x0100:0x0 = 0x1000
asm_sectors equ 0x20 ; sectors to read
bootdev equ 0x0
mov ax, ASM_KERNEL_BASE
mov es, ax
xor bx, bx
mov ah, 0x2 ; Read sectors from memory
mov al, sectors ; Number of sectors to read
mov al, asm_sectors ; Number of sectors to read
xor ch, ch ; Cylinder 0
mov cl, 2 ; Sector 2
xor dh, dh ; Head 0
@ -81,7 +81,29 @@ rm_start:
jc read_failed
cmp al, sectors
cmp al, asm_sectors
jne read_failed
; Loading the C++ kernel from floppy
CPP_KERNEL_BASE equ 0x1000
cpp_sectors equ 0x02
mov ax, CPP_KERNEL_BASE
mov es, ax
xor bx, bx
mov ah, 0x2 ; Read sectors from memory
mov al, cpp_sectors ; Number of sectors to read
xor ch, ch ; Cylinder 0
mov cl, 16 ; Sector 16
mov dh, 1 ; Head 1
mov dl, bootdev ; Drive
int 0x13
jc read_failed
cmp al, cpp_sectors
jne read_failed
; Run the assembly kernel