Use hardwired vbstrt variable to check vblank line.

diff --git a/custom.cpp b/custom.cpp
index c29addc0e9dc492446e43b06763476680d5f9c39..0ba753616e1c416742674e1a05eff06eeb4d58d5 100644 (file)
--- a/custom.cpp
+++ b/custom.cpp
@@ -417,7 +417,7 @@ int sprite_0_width, sprite_0_height, sprite_0_doubled;
 uae_u32 sprite_0_colors[4];
 static uae_u8 magic_sprite_mask = 0xff;
 
-static int hardwired_vbstop;
+static int hardwired_vbstrt, hardwired_vbstop;
 
 static int last_sprite_point, last_sprite_point_abs;
 static int nr_armed;
@@ -7089,6 +7089,7 @@ static void init_beamcon0(bool fakehz)
                minfirstline = VBLANK_ENDLINE_PAL;
                vblank_hz_nom = vblank_hz = VBLANK_HZ_PAL;
                hardwired_vbstop = VBLANK_STOP_PAL;
+               hardwired_vbstrt = maxvpos;
                equ_vblank_endline = EQU_ENDLINE_PAL;
                equ_vblank_toggle = true;
                vblank_hz_shf = clk / ((maxvpos + 0.0f) * maxhpos);
@@ -7100,6 +7101,7 @@ static void init_beamcon0(bool fakehz)
                minfirstline = VBLANK_ENDLINE_NTSC;
                vblank_hz_nom = vblank_hz = VBLANK_HZ_NTSC;
                hardwired_vbstop = VBLANK_STOP_NTSC;
+               hardwired_vbstrt = maxvpos;
                equ_vblank_endline = EQU_ENDLINE_NTSC;
                equ_vblank_toggle = false;
                vblank_hz_shf = clk / ((maxvpos + 0.0f) * (maxhpos + 0.5f));
@@ -7787,7 +7789,7 @@ static void vb_check(void)
                        vb_state = true;
                }
        } else {
-               if (vpos == maxvpos + lof_store - 1) {
+               if (vpos == hardwired_vbstrt + lof_store - 1) {
                        vb_start_line = 1;
                        vb_state = true;
                }