Fix horizontal sync start/end calculation.

1 files changed, 2 insertions, 2 deletions

diff --git a/tvdump.c b/tvdump.c
index ab17f3b..1256495 100644
--- a/tvdump.c
+++ b/tvdump.c
@@ -238,8 +238,8 @@ void tv_dump(void* regs){
       printf("-- CRTC %d timings --\n",i);
       printf("horizDisplay: %d\n",(horizDisplay+1)*8);
       printf("horizTotal: %d\n",(horizTotal+5)*8);
-      printf("horizSyncStart: %d\n",(horizStart+1)*8);
-      printf("horizSyncEnd: %d\n",(DIFFM(horizEnd,horizStart,0x20)+horizStart+1)*8);
+      printf("horizSyncStart: %d\n",(horizStart-1)*8);
+      printf("horizSyncEnd: %d\n",(DIFFM(horizEnd,horizStart,0x20)+horizStart-1)*8);
       printf("horizBlankStart: %d\n",(horizBlankStart+1)*8);
       printf("horizBlankEnd: %d\n",(DIFFM(horizBlankEnd,horizBlankStart,128)+horizBlankStart+1)*8);
       printf("vertDisplay: %d\n",vertDisplay+1);