diff options
| -rw-r--r-- | vgasrc/vgaentry.S | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/vgasrc/vgaentry.S b/vgasrc/vgaentry.S index 6e31c4e..11197f1 100644 --- a/vgasrc/vgaentry.S +++ b/vgasrc/vgaentry.S @@ -47,7 +47,17 @@ _rom_header_signature: // Force a fault if found to be running on broken x86emu versions. DECLFUNC x86emu_fault +msg: .ascii "SeaVGABIOS: x86emu leal trap!\n" x86emu_fault: +#if CONFIG_DEBUG_IO + movw %cs:DebugOutputPort, %dx + movw $msg, %si +1: movb %cs:(%si), %al + outb %al, (%dx) + incw %si + cmpw $x86emu_fault, %si + jl 1b +#endif 1: hlt jmp 1b |