mirror of
https://github.com/isometimes/rpi4-osdev
synced 2024-11-08 19:30:39 +00:00
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
#include "include/wgt.h"
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#include "include/mem.h"
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#include "include/multicore.h"
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// ######## REQUIRED FUNCTIONS ########
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unsigned long state0 = 1000;
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unsigned long state1 = 2000;
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unsigned long rand(void)
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{
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unsigned long s1 = state0;
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unsigned long s0 = state1;
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state0 = s0;
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s1 ^= s1 << 23;
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s1 ^= s1 >> 17;
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s1 ^= s0;
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s1 ^= s0 >> 26;
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state1 = s1;
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return state0 + state1;
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}
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// ######## STUB FUNCTIONS ########
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unsigned int kb = 0;
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unsigned int kbhit(void) {
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kb++;
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return kb / 500;
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}
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void getch(void) {
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wait_msec(0x500000);
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kb = 0;
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}
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// ######## WGT EXAMPLES ########
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void wgt15()
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{
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short y;
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block screen1;
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set_clock_rate(get_max_clock());
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mem_init();
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vga256 (); /* Initializes WGT system */
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start_core2(minit); // Start the comms engine (core 2)
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while (!comms_up); // Wait for comms up
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screen1 = wnewblock (0, 0, 119, 129);
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/* Virtual screens can now be any size, as long as they fit within one
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segment (64k) */
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wtextcolor (vgapal[15]);
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wouttextxy (0, 0, NULL, "Click the mouse button in a few seconds");
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wsetscreen (screen1); /* sets to screen1 */
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for (y = 0; y < 200; y++)
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{
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wsetcolor (vgapal[y]);
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wline (0, 0, 319, y); /* draw something on another screen */
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wline (319, 199, 0, y);
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}
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while (!but); // wait for a mouse press
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/* now use putblock to show what happened on the other screen */
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wnormscreen (); /* make the putblock go onto the default screen */
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wputblock (0, 10, screen1, 0);
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wfreeblock (screen1);
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/* remember to free that memory (64004 bytes for a screen) */
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}
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void main()
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{
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wgt15();
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while (1);
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}
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