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https://github.com/isometimes/rpi4-osdev
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Added wgt45.c to load space.spr sprites and display them
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parent
c6033ac356
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3 changed files with 85 additions and 2 deletions
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@ -20,11 +20,14 @@ bin/wgt2blk.o: bin/wgt2.blk
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bin/lettersspr.o: bin/letters.spr
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$(LLVMPATH)/llvm-objcopy -I binary -O elf64-littleaarch64 -B aarch64 $< $@
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bin/spacespr.o: bin/space.spr
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$(LLVMPATH)/llvm-objcopy -I binary -O elf64-littleaarch64 -B aarch64 $< $@
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%.o: %.c
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$(LLVMPATH)/clang --target=aarch64-elf $(CLANGFLAGS) -c $< -o $@
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kernel8.img: boot/boot.o $(OFILES) bin/wgt1pal.o bin/wgt1blk.o bin/wgt2blk.o bin/lettersspr.o
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$(LLVMPATH)/ld.lld -m aarch64elf -nostdlib boot/boot.o $(OFILES) bin/wgt1pal.o bin/wgt1blk.o bin/wgt2blk.o bin/lettersspr.o -T boot/link.ld -o kernel8.elf
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kernel8.img: boot/boot.o $(OFILES) bin/wgt1pal.o bin/wgt1blk.o bin/wgt2blk.o bin/lettersspr.o bin/spacespr.o
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$(LLVMPATH)/ld.lld -m aarch64elf -nostdlib boot/boot.o $(OFILES) bin/wgt1pal.o bin/wgt1blk.o bin/wgt2blk.o bin/lettersspr.o bin/spacespr.o -T boot/link.ld -o kernel8.elf
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$(LLVMPATH)/llvm-objcopy -O binary kernel8.elf kernel8.img
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clean:
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BIN
part12-wgt/bin/space.spr
Normal file
BIN
part12-wgt/bin/space.spr
Normal file
Binary file not shown.
80
part12-wgt/examples/wgt45.c
Normal file
80
part12-wgt/examples/wgt45.c
Normal file
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@ -0,0 +1,80 @@
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#include "wgt.h"
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#include "include/mem.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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void wait_msec(unsigned int n)
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{
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register unsigned long f, t, r;
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// Get the current counter frequency
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asm volatile ("mrs %0, cntfrq_el0" : "=r"(f));
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// Read the current counter
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asm volatile ("mrs %0, cntpct_el0" : "=r"(t));
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// Calculate expire value for counter
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t+=((f/1000)*n)/1000;
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do{asm volatile ("mrs %0, cntpct_el0" : "=r"(r));}while(r<t);
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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 wgt45()
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{
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block sprites[10]; /* An array of blocks to load the sprites into.
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Version 5.0 allows for any number to be
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loaded in, as long as you pass the same size
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of the array to the wloadsprites and wfreesprites
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commands. */
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short i;
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color palette[256];
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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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extern unsigned char _binary_bin_space_spr_start[];
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wloadsprites (palette, &_binary_bin_space_spr_start[0], sprites, 0, 9);
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/* loads the first 10 sprites */
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wsetpalette (0, 255, palette);
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for (i = 0; i < 10; i++) /* Display them */
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wputblock (i * 30, 0, sprites[i], NORMAL);
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}
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void main()
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{
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wgt45();
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while (1);
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}
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