modex mode 1 is 320x240 so make sure it's 320 across.

[16.git] / src / lib / modex16.c

diff --git a/src/lib/modex16.c b/src/lib/modex16.c
index bada2e67972d951ea48fdacbe96bbda4b969b5b8..70e8e871b063aff8f5bc568cc0f49d6f8e00e941 100755 (executable)
--- a/src/lib/modex16.c
+++ b/src/lib/modex16.c
@@ -94,9 +94,12 @@ void modexEnter(sword vq, boolean cmem, global_game_variables_t *gv)
                case 1:\r
                        //CRTParmCount = sizeof(ModeX_320x240regs) / sizeof(ModeX_320x240regs[0]);\r
                        /* width and height */\r
-                       gv->video.page[0].sw=vga_state.vga_width = 320; // VGA lib currently does not update this\r
-                       gv->video.page[0].sh=vga_state.vga_height = 240; // VGA lib currently does not update this\r
+                       gv->video.page[0].sw = vga_state.vga_width = 320; // VGA lib currently does not update this\r
+                       gv->video.page[0].sh = vga_state.vga_height = 240; // VGA lib currently does not update this\r
 \r
+                       // mode X BYTE mode\r
+                       cm.word_mode = 0;\r
+                       cm.dword_mode = 0;\r
                        // 320x240 mode 60Hz\r
                        cm.horizontal_total=0x5f + 5; /* CRTC[0]             -5 */\r
                        cm.horizontal_display_end=0x4f + 1; /* CRTC[1]       -1 */\r
@@ -115,8 +118,7 @@ void modexEnter(sword vq, boolean cmem, global_game_variables_t *gv)
                        cm.clock_select = 0; /* misc register = 0xE3  25MHz */\r
                        cm.vsync_neg = 1;\r
                        cm.hsync_neg = 1;\r
-                       vga_state.vga_stride=0x58;\r
-                       cm.offset=0x2c;\r
+                       cm.offset = (vga_state.vga_width / (4 * 2)); // 320 wide (40 x 4 pixel groups x 2)\r
                        break;\r
                case 2: // TODO: 160x120 according to ModeX_160x120regs\r
                        return;\r
@@ -130,6 +132,7 @@ void modexEnter(sword vq, boolean cmem, global_game_variables_t *gv)
                        return;\r
        }\r
 \r
+       vga_state.vga_stride = cm.offset * 2;\r
        vga_write_crtc_mode(&cm,0);\r
 \r
        /* clear video memory */\r