| /SPARTAN/trunk/arch/ia32/boot/boot.S |
|---|
| 50,7 → 50,7 |
| _start_0x7c00: |
| xorw %ax,%ax # reset, %al will be used below |
| movw %ax,%dx # fd0, %dh and %dl will be used below |
| movw %dx,%ds |
| movw %dx,%ds |
| movw %dx,%ss # initialize stack |
| movw $stack,%sp |
| 58,7 → 58,7 |
| int $0x13 # reset floppy |
| jc stop_trying |
| movw %dx,%ds |
| movw %dx,%ds |
| movw %dx,%ss |
| movw $0x7c00,%sp |
| movw $0xffe0,%si # after next increment, %si will become 0x0000 |
| 92,13 → 92,13 |
| movw logical_sector,%ax |
| divb sectors |
| movb %ah,%cl |
| incb %cl # sector |
| incb %cl # sector |
| movb %al,%ch |
| shrb $1,%ch # track |
| movb %al,%dh |
| andb $1,%dh # head |
| 126,11 → 126,11 |
| push %bp |
| movw %sp,%bp |
| pusha |
| movb $0xe,%ah |
| movb $7,%bl |
| int $0x10 |
| popa |
| pop %bp |
| ret |