Add a comment explaining the code fetching VBE strings from video BIOS.

1 files changed, 4 insertions, 0 deletions

diff --git a/vbe.c b/vbe.c
index 5029020..b9461d7 100644
--- a/vbe.c
+++ b/vbe.c
@@ -68,6 +68,10 @@ static unsigned get_data(char *buf, unsigned buf_size, char *bufferaddr, unsigne
     if(len >= buf_size) len = buf_size - 1;
     memcpy(buf, real_addr, len);
   }
+  /* the pointer may also point to the BIOS instead:
+     0x0c0000: video BIOS
+     0x100000: end of ROM area
+  */
   else if(addr >= 0x0c0000 && addr < 0x100000) {
     len = 0x100000 - addr;
     if(len >= buf_size) len = buf_size - 1;