105 lines
1.9 KiB
C
105 lines
1.9 KiB
C
#include <c64/vic.h>
|
|
#include <c64/memmap.h>
|
|
#include <string.h>
|
|
|
|
byte font[2048];
|
|
|
|
void copyFont(void)
|
|
{
|
|
mmap_set(MMAP_CHAR_ROM);
|
|
|
|
memcpy(font, (byte *)0xd800, 2048);
|
|
|
|
mmap_set(MMAP_ROM);
|
|
}
|
|
|
|
#define screen ((byte *)0x0400)
|
|
#define color ((byte *)0xd800)
|
|
#define sline(x, y) (screen + 40 * (y) + (x))
|
|
#define srow 5
|
|
|
|
void scrollLeft(void)
|
|
{
|
|
for(char x=0; x<39; x++)
|
|
{
|
|
#assign y 0
|
|
#repeat
|
|
sline(0, srow + y)[x] = sline(1, srow + y)[x];
|
|
#assign y y + 1
|
|
#until y == 16
|
|
}
|
|
}
|
|
|
|
void expand(char c, byte f)
|
|
{
|
|
byte * fp = font + 8 * c;
|
|
|
|
#assign y 0
|
|
#repeat
|
|
sline(39, srow + 2 * y + 0)[0] =
|
|
sline(39, srow + 2 * y + 1)[0] = (fp[y] & f) ? 160 : 32;
|
|
#assign y y + 1
|
|
#until y == 8
|
|
|
|
}
|
|
|
|
const char * text =
|
|
s"Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt "
|
|
s"ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo "
|
|
s"dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit "
|
|
s"amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor "
|
|
s"invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam "
|
|
s"et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet."
|
|
|
|
|
|
int main(void)
|
|
{
|
|
mmap_trampoline();
|
|
|
|
copyFont();
|
|
|
|
memset(screen, 0x20, 1000);
|
|
|
|
for(int i=0; i<16; i++)
|
|
memset(color + 40 * (srow + i), i + 1, 40);
|
|
|
|
vic.color_back = VCOL_BLACK;
|
|
vic.color_border = VCOL_BLACK;
|
|
|
|
vic.ctrl2 = 0;
|
|
|
|
int ci = 0;
|
|
for(;;)
|
|
{
|
|
byte cf = 0x80;
|
|
while (cf)
|
|
{
|
|
for(char i=0; i<2; i++)
|
|
{
|
|
vic_waitBottom();
|
|
vic.ctrl2 = 4;
|
|
vic_waitTop();
|
|
|
|
vic_waitBottom();
|
|
vic.ctrl2 = 2;
|
|
vic_waitTop();
|
|
|
|
vic_waitBottom();
|
|
vic.ctrl2 = 0;
|
|
vic_waitTop();
|
|
|
|
vic_waitBottom();
|
|
vic.ctrl2 = 6;
|
|
|
|
scrollLeft();
|
|
expand(text[ci], cf);
|
|
}
|
|
|
|
cf >>= 1;
|
|
}
|
|
ci++;
|
|
}
|
|
|
|
return 0;
|
|
}
|