initial commitHEADmaster

1 files changed, 56 insertions, 0 deletions

diff --git a/stage1/entry.S b/stage1/entry.S
new file mode 100644
index 0000000..81390d9
--- /dev/null
+++ b/stage1/entry.S
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+.intel_syntax noprefix
+
+.section .mbr, "ax"
+
+.extern _stack_start
+.extern _stack_end
+.extern centry
+
+.global _start
+.code16
+	
+_start:	
+	xor ax, ax
+	mov ds, ax
+	jmp 0x0:_entry
+
+_entry:
+	mov ah, 0x42
+	mov si, offset dap
+	
+	int 0x13
+
+	jc error
+
+	mov ah, 0x0E
+	mov al, 'S'
+	mov bh, 0x0
+	mov bl, 0x0
+
+	int 0x10
+
+	jmp 0x0:stage1_sector
+	
+	cli
+	hlt
+
+error:
+	mov ah, 0x0e
+	mov al, 'E'
+	mov bh, 0x0
+	mov bl, 0x0
+
+	int 0x10
+
+	cli
+	hlt
+
+.section .mbr_data, "aw"
+
+dap:
+	.byte 0x10
+	.byte 0
+	.word 14
+	.word 0x7e00
+	.word 0x0
+	.quad 1