[VM][FM77AV][MB61VH010] More accurate lines.

diff --git a/source/src/vm/fm7/mb61vh010.cpp b/source/src/vm/fm7/mb61vh010.cpp
index b1f6a2e..312bde4 100644 (file)
--- a/source/src/vm/fm7/mb61vh010.cpp
+++ b/source/src/vm/fm7/mb61vh010.cpp
@@ -383,8 +383,10 @@ void MB61VH010::do_line(void)
        int cpy_t = y_begin;
        int ax = x_end - x_begin;
        int ay = y_end - y_begin;
-       int diff;
+       int diff = 0;
        int count = 0;
+       int xcount;
+       int ycount;
        uint8 mask_bak = mask_reg;
        uint8 vmask[8] = {0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01};
        //printf("Line: (%d,%d) - (%d,%d) CMD=%02x\n", x_begin, y_begin, x_end, y_end, command_reg);  
@@ -408,10 +410,14 @@ void MB61VH010::do_line(void)
        
        //mask_reg = 0xff & ~vmask[x_begin & 7];
        mask_reg = 0xff;
-       // Got from HD63484.cpp .
-       if(abs(ax) >= abs(ay)) {
-               if(ax != 0) {
-                       diff = ((abs(ay) + 1) * 1024) / abs(ax);
+       // Got from HD63484.cpp.
+       xcount = abs(ax);
+       ycount = abs(ay);
+       if(xcount >= ycount) {
+               if(xcount != 0) {
+                       if(ycount != 0) {
+                               diff = ((abs(ay)  + 1) * 1024) / abs(ax);
+                       }
                        for(; cpx_t != x_end; ) {
                                lastflag = put_dot(cpx_t, cpy_t);
                                count += diff;
@@ -438,8 +444,10 @@ void MB61VH010::do_line(void)
                        lastflag = put_dot(cpx_t, cpy_t);
                        total_bytes++;
                }
-       } else { // (abs(ax) < abs(ay) 
-               diff = ((abs(ax) + 1) * 1024) / abs(ay);
+       } else { // (abs(ax) < abs(ay)
+               if(xcount != 0) {
+                       diff = ((xcount + 1) * 1024) / abs(ay);
+               }
                for(; cpy_t != y_end; ) {
                        lastflag = put_dot(cpx_t, cpy_t);
                        count += diff;
@@ -455,6 +463,7 @@ void MB61VH010::do_line(void)
                                        cpx_t++;
                                }
                                count -= 1024;
+                               total_bytes++;
                        }
                        if(ay > 0) {
                                cpy_t++;
@@ -464,14 +473,16 @@ void MB61VH010::do_line(void)
                        total_bytes++;
                }
        }
+
+       if(!lastflag) total_bytes++;
        do_alucmds(alu_addr);
 
-       usec = (double)total_bytes / 16.0;
-       //if(usec >= 1.0) { // 1MHz
-       register_event(this, EVENT_MB61VH010_BUSY_OFF, usec, false, &eventid_busy) ;
-               //} else {
-                       //busy_flag = false;
-               //}
+       if(total_bytes > 8) { // Over 0.5us
+               usec = (double)total_bytes / 16.0;
+               register_event(this, EVENT_MB61VH010_BUSY_OFF, usec, false, &eventid_busy) ;
+       } else {
+               busy_flag = false;
+       }
        //mask_reg = mask_bak;
        line_pattern = line_style;
 }