diff options
| author | xeno <xeno@eisberg.nacht> | 2017-02-23 23:49:18 +0100 |
|---|---|---|
| committer | xeno <xeno@eisberg.nacht> | 2017-02-23 23:49:18 +0100 |
| commit | ce7317daf7c9740bc8595f14f7248fa1b050afcf (patch) | |
| tree | f2d14fd243b5f8235e9e467ad151fd70ecb6dd1e /printb.asm | |
initial commit with some old assembly stuff
Diffstat (limited to 'printb.asm')
| -rw-r--r-- | printb.asm | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/printb.asm b/printb.asm new file mode 100644 index 0000000..a8fa788 --- /dev/null +++ b/printb.asm @@ -0,0 +1,36 @@ +org 0x0500 + + +SECTION .data +boot: db 'Welcome to the second stage!', 0x0A, 0x0D, 0x00 +foo: db 'What a nice message this is!', 0x0A, 0x0D, 0x00 + +SECTION .text + + +jmp start + +print: + push ax + cld + mov ah, 0x0E + + .loop: + lodsb + cmp al, 0x00 + je .out + int 0x10 + jmp .loop + .out: + pop ax + ret + +start: + mov si, boot + call print + + mov si, foo + call print + +; maybe to something here... +; e.g.: how to keep CPU from spinning at 100% |