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Hello world example for the Supervision

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Fabrizio Caruso 2019-10-03 22:46:34 +02:00 committed by Oliver Schmidt
parent 96547d1dd4
commit 74a904be54
1 changed files with 72 additions and 0 deletions
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samples/supervisionhello.c Executable file
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#include <supervision.h>
#include <peekpoke.h>
#define SV_OFFSET 0x0A
#define SV_INIT_POSITION (SV_VIDEO+0x0A*48+0x0A)
unsigned char h_char[] = {0x66,0x66,0x66,0x7e,0x66,0x66,0x66,0x00};
unsigned char e_char[] = {0x7e,0x60,0x60,0x78,0x60,0x60,0x7e,0x00};
unsigned char l_char[] = {0x60,0x60,0x60,0x60,0x60,0x60,0x7e,0x00};
unsigned char o_char[] = {0x3c,0x66,0x66,0x66,0x66,0x66,0x3c,0x00};
unsigned char w_char[] = {0x63,0x63,0x63,0x6b,0x7f,0x77,0x63,0x00};
unsigned char r_char[] = {0x7c,0x66,0x66,0x7c,0x78,0x6c,0x66,0x00};
unsigned char d_char[] = {0x78,0x6c,0x66,0x66,0x66,0x6c,0x78,0x00};
void clear_screen(void)
{
unsigned short i;
for(i=0;i<0x2000;++i)
{
POKE(SV_VIDEO+i,0);
}
}
unsigned char bit_reverse_lookup[16] =
{
0x0, 0x8, 0x4, 0xC, 0x2, 0xA, 0x6, 0xE,
0x1, 0x9, 0x5, 0xD, 0x3, 0xB, 0x7, 0xF
};
unsigned char bit_reverse(unsigned char n)
{
return (bit_reverse_lookup[n&0b1111] << 4) | bit_reverse_lookup[n>>4];
}
void init_screen(void)
{
SV_LCD.height = 0xA0;
SV_LCD.width = 0xA0;
SV_BANK = 0xC9;
}
int main()
{
unsigned char i;
init_screen();
clear_screen();
for(i=0;i<8;++i)
{
POKE(SV_INIT_POSITION+1 +i*48,bit_reverse(h_char[i]));
POKE(SV_INIT_POSITION+2 +i*48,bit_reverse(e_char[i]));
POKE(SV_INIT_POSITION+3 +i*48,bit_reverse(l_char[i]));
POKE(SV_INIT_POSITION+4 +i*48,bit_reverse(l_char[i]));
POKE(SV_INIT_POSITION+5 +i*48,bit_reverse(o_char[i]));
POKE(SV_INIT_POSITION+7 +i*48,bit_reverse(w_char[i]));
POKE(SV_INIT_POSITION+8 +i*48,bit_reverse(o_char[i]));
POKE(SV_INIT_POSITION+9 +i*48,bit_reverse(r_char[i]));
POKE(SV_INIT_POSITION+10+i*48,bit_reverse(l_char[i]));
POKE(SV_INIT_POSITION+11+i*48,bit_reverse(d_char[i]));
}
while(1) {};
return 0;
}