diff options
| -rw-r--r-- | src/mga_driver.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/mga_driver.c b/src/mga_driver.c index f0b5abb..177a5a7 100644 --- a/src/mga_driver.c +++ b/src/mga_driver.c @@ -3618,7 +3618,7 @@ void MGAAdjustFrame(ADJUST_FRAME_ARGS_DECL) { SCRN_INFO_PTR(arg); - int Base, tmp, count; + int Base, tmp, count, last_vcount; MGAFBLayout *pLayout; MGAPtr pMga; @@ -3648,8 +3648,14 @@ MGAAdjustFrame(ADJUST_FRAME_ARGS_DECL) while (INREG8(0x1FDA) & 0x08); while (!(INREG8(0x1FDA) & 0x08)); /* wait until we're past the start (fixseg.c in the DDK) */ - count = INREG(MGAREG_VCOUNT) + 2; - while(INREG(MGAREG_VCOUNT) < count); + last_vcount = INREG(MGAREG_VCOUNT); + count = last_vcount + 2; + while (1) { + int vcount = INREG(MGAREG_VCOUNT); + if (vcount >= count) break; + if (vcount < last_vcount) break; + last_vcount = count; + } OUTREG16(MGAREG_CRTC_INDEX, (Base & 0x00FF00) | 0x0C); OUTREG16(MGAREG_CRTC_INDEX, ((Base & 0x0000FF) << 8) | 0x0D); |