#include #include #include "splitscreen.h" /* For the splitscreen microprogram, the COMM area holds 8 short words that control the 3-way screen split: COMM+0 SCROLL_X for top section COMM+2 SCROLL_Y for top section COMM+4 Y-coordinate of start of middle section COMM+6 SCROLL_X for middle section COMM+8 SCROLL_Y for middle section COMM+10 Y-coordinate of start of bottom section COMM+12 SCROLL_X for bottom section COMM+14 SCROLL_Y for bottom section */ #include "splitscreen_graphics.h" void setup() { GD.begin(); Serial.begin(1000000); // JCB GD.copy(RAM_PIC, splitscreen_pic, sizeof(splitscreen_pic)); GD.copy(RAM_CHR, splitscreen_chr, sizeof(splitscreen_chr)); GD.copy(RAM_PAL, splitscreen_pal, sizeof(splitscreen_pal)); GD.wr16(COMM+0, 0); GD.wr16(COMM+2, 0); GD.wr16(COMM+4, 100); // split at line 100 GD.wr16(COMM+6, 0); GD.wr16(COMM+8, 140); GD.wr16(COMM+10, 200); // split at line 200 GD.wr16(COMM+12, 0); GD.wr16(COMM+14, (511 & (82 - 200))); // show line 82 at line 200 GD.microcode(splitscreen_code, sizeof(splitscreen_code)); } // Set the scroll registers for the middle screen secion to (x, y) static void scrollxy(uint16_t x, uint16_t y) { GD.wr16(COMM+6, x); GD.wr16(COMM+8, y); } void loop() { static int i; float th = i / 16.; scrollxy(55 + 50 * cos(th), 150 + 50 * sin(th)); GD.wr16(COMM+12, i); i++; GD.waitvblank(); // GD.screenshot(i); // JCB }