Mask raw directory bit when giving drive number to int13

2019-10-17 19:19:12 +00:00 · 2019-10-17 19:19:12 +00:00 · e70386bcfb
commit e70386bcfb
parent b3014ef8e4
1 changed files with 1 additions and 0 deletions
--- a/kernel/drive.asm
+++ b/kernel/drive.asm
@ -43,6 +43,7 @@ drive_read:
  mov si, 5        ; retry count
 .try:
  mov dl, [bx+fcb_drv] ; drive number
+  and dl, 0x7F
  dec dl
  mov ax, 0x0201
  mov bx, diskbuf