1.1 --- a/lib/vga_display.c Sat Nov 03 14:05:05 2018 +0100
1.2 +++ b/lib/vga_display.c Sat Nov 03 16:42:17 2018 +0100
1.3 @@ -58,6 +58,10 @@
1.4 Otherwise, transfers are initiated by the line timer. */
1.5
1.6 vga_display.transfer_int_num = transfer_int_num;
1.7 +
1.8 + /* Update the addresses used for the display. */
1.9 +
1.10 + vga_set_frame(display_config);
1.11 }
1.12
1.13 /* Initialise a separate transfer timer if different from the general display
1.14 @@ -243,6 +247,17 @@
1.15
1.16
1.17
1.18 +/* Update the display addresses from the general display configuration. */
1.19 +
1.20 +void vga_set_frame(display_config_t *display_config)
1.21 +{
1.22 + vga_display.screen_start = display_config->screen_start;
1.23 + vga_display.screen_limit = display_config->screen_limit;
1.24 + vga_display.screen_size = display_config->screen_size;
1.25 +}
1.26 +
1.27 +
1.28 +
1.29 /* Display state machine interrupt handler. */
1.30
1.31 void vga_interrupt_handler(void)
1.32 @@ -325,7 +340,7 @@
1.33
1.34 /* Set the line address. */
1.35
1.36 - vga_display.linedata = vga_display.display_config->screen_start;
1.37 + vga_display.linedata = vga_display.screen_start;
1.38
1.39 if (vga_display.line_channels)
1.40 start_visible();
1.41 @@ -345,8 +360,8 @@
1.42 {
1.43 vga_display.linedata += cfg->line_length;
1.44
1.45 - if (vga_display.linedata >= cfg->screen_limit)
1.46 - vga_display.linedata -= cfg->screen_size;
1.47 + if (vga_display.linedata >= vga_display.screen_limit)
1.48 + vga_display.linedata -= vga_display.screen_size;
1.49 }
1.50
1.51 if (vga_display.line_channels)