0.c is under study wwww

diff --git a/src/0.c b/src/0.c
index 5f6d9fe59f408d1851be97d20ae4f5f586d24a1a..2df5d1430997d5839a771886dade695157e66721 100755 (executable)
--- a/src/0.c
+++ b/src/0.c
@@ -60,30 +60,6 @@ int main(int argc,char **argv) {
                printf("VGA probe failed\n");
                return 1;
        }
-//     int10_setmode(19);
-//     update_state_from_vga();
-//     vga_enable_256color_modex(); // VGA mode X
-//     gvar.video.page[0].width = 320; // VGA lib currently does not update this
-//     gvar.video.page[0].height = 240; // VGA lib currently does not update this
-//
-// //#if 1 // 320x240 test mode: this is how Project 16 is using our code, enable for test case
-//     {
-//             struct vga_mode_params cm;
-//
-//             vga_read_crtc_mode(&cm);
-//
-//             // 320x240 mode 60Hz
-//             cm.vertical_total = 525;
-//             cm.vertical_start_retrace = 0x1EA;
-//             cm.vertical_end_retrace = 0x1EC;
-//             cm.vertical_display_end = 480;
-//             cm.vertical_blank_start = 489;
-//             cm.vertical_blank_end = 517;
-//
-//             vga_write_crtc_mode(&cm,0);
-//     }
-//     gvar.video.page[0].height = 240; // VGA lib currently does not update this
-//#endif
        VGAmodeX(1, 1, &gvar);
 
        /* load color palette */
@@ -108,6 +84,8 @@ int main(int argc,char **argv) {
        gvar.video.page[1].dy=gvar.video.page[0].dy=16;
        modexShowPage(&(gvar.video.page[1]));
 
+       #define VMEMHEIGHT gvar.video.page[0].height+gvar.video.page[1].height
+
        //4     this dose the screen
        {
                unsigned int i,j,o;
@@ -116,18 +94,17 @@ int main(int argc,char **argv) {
                for (i=0;i < gvar.video.page[0].width;i++) {
                        o = i >> 2;
                        vga_write_sequencer(0x02/*map mask*/,1 << (i&3));
-                       for (j=0;j < gvar.video.page[0].height;j++,o += gvar.video.page[0].stridew)
+                       for (j=0;j < VMEMHEIGHT;j++,o += gvar.video.page[0].stridew)
                                vga_state.vga_graphics_ram[o] = (i^j)&15; // VRL samples put all colors in first 15!
                }
        }
 
-       //draw_vrl1_vgax_modex(0/*x-rx*/,0/*y-ry*/,vrl_header,vrl_lineoffs,buffer+sizeof(*vrl_header),bufsz-sizeof(*vrl_header));
+       while (getch() != 13);
 
        /* make distinctive pattern offscreen, render sprite, copy onscreen.
         * this time, we render the distinctive pattern to another offscreen location and just copy.
         * note this version is much faster too! */
        {
-               //const unsigned int gvar.video.page[0].pagesize = (gvar.video.page[0].stridew * gvar.video.page[0].height);
                const unsigned int pattern_ofs = 0x10000UL - gvar.video.page[0].pagesize;//(gvar.video.page[0].stridew * gvar.video.page[0].height);
                unsigned int i,j,o,o2;
                int x,y,rx,ry,w,h;
@@ -141,7 +118,7 @@ int main(int argc,char **argv) {
                for (i=0;i < gvar.video.page[0].width;i++) {
                        o = (i >> 2) + pattern_ofs;
                        vga_write_sequencer(0x02/*map mask*/,1 << (i&3));
-                       for (j=0;j < gvar.video.page[0].height;j++,o += gvar.video.page[0].stridew)
+                       for (j=0;j < VMEMHEIGHT;j++,o += gvar.video.page[0].stridew)
                                vga_state.vga_graphics_ram[o] = (i^j)&15; // VRL samples put all colors in first 15!
                }
 
@@ -165,7 +142,7 @@ int main(int argc,char **argv) {
                        h = vrl_header->height + overdraw + y - ry;
                        w = (x + vrl_header->width + (overdraw*2) + 3/*round up*/ - rx) & (~3);
                        if ((rx+w) > gvar.video.page[0].width) w = gvar.video.page[0].width-rx;
-                       if ((ry+h) > gvar.video.page[0].height) h = gvar.video.page[0].height-ry;
+                       if ((ry+h) > VMEMHEIGHT) h = (VMEMHEIGHT)-ry;
 
                        /* block copy pattern to where we will draw the sprite */
                        vga_setup_wm1_block_copy();
@@ -202,7 +179,7 @@ int main(int argc,char **argv) {
                        y += ydir;
                        if (x >= (gvar.video.page[0].width - 1) || x == 0)
                                xdir = -xdir;
-                       if (y >= (gvar.video.page[0].height - 1) || y == 0)
+                       if (y >= (VMEMHEIGHT - 1) || y == 0)
                                ydir = -ydir;
                }
        }