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/*
ds81 - Nintendo DS ZX81 emulator.
Copyright (C) 2006 Ian Cowburn <ianc@noddybox.co.uk>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
$Id$
*/
#include <nds.h>
#include <string.h>
#include "ds81_global.h"
/* ---------------------------------------- STATIC DATA
*/
#define WIDTH 256
#define HEIGHT 192
static uint16 *buff=0;
static uint8 font[]=
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x08, 0x08, 0x08, 0x08, 0x00, 0x08, 0x00,
0x00, 0x24, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x24, 0x7e, 0x24, 0x24, 0x7e, 0x24, 0x00,
0x00, 0x10, 0x7c, 0x14, 0x7c, 0x50, 0x7c, 0x10,
0x00, 0x46, 0x26, 0x10, 0x08, 0x64, 0x62, 0x00,
0x00, 0x08, 0x14, 0x08, 0x54, 0x22, 0x5c, 0x00,
0x00, 0x10, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x20, 0x10, 0x10, 0x10, 0x10, 0x20, 0x00,
0x00, 0x04, 0x08, 0x08, 0x08, 0x08, 0x04, 0x00,
0x00, 0x00, 0x28, 0x10, 0x7c, 0x10, 0x28, 0x00,
0x00, 0x00, 0x10, 0x10, 0x7c, 0x10, 0x10, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x08,
0x00, 0x00, 0x00, 0x00, 0x7c, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00,
0x00, 0x00, 0x40, 0x20, 0x10, 0x08, 0x04, 0x00,
0x00, 0x3c, 0x62, 0x52, 0x4a, 0x46, 0x3c, 0x00,
0x00, 0x18, 0x14, 0x10, 0x10, 0x10, 0x7c, 0x00,
0x00, 0x3c, 0x42, 0x40, 0x3c, 0x02, 0x7e, 0x00,
0x00, 0x3c, 0x42, 0x30, 0x40, 0x42, 0x3c, 0x00,
0x00, 0x10, 0x18, 0x14, 0x12, 0x7e, 0x10, 0x00,
0x00, 0x7e, 0x02, 0x3e, 0x40, 0x42, 0x3c, 0x00,
0x00, 0x3c, 0x02, 0x3e, 0x42, 0x42, 0x3c, 0x00,
0x00, 0x7e, 0x40, 0x20, 0x10, 0x08, 0x08, 0x00,
0x00, 0x3c, 0x42, 0x3c, 0x42, 0x42, 0x3c, 0x00,
0x00, 0x3c, 0x42, 0x42, 0x7c, 0x40, 0x3c, 0x00,
0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x08, 0x00,
0x00, 0x00, 0x08, 0x00, 0x00, 0x08, 0x08, 0x04,
0x00, 0x00, 0x20, 0x10, 0x08, 0x10, 0x20, 0x00,
0x00, 0x00, 0x00, 0x7c, 0x00, 0x7c, 0x00, 0x00,
0x00, 0x00, 0x08, 0x10, 0x20, 0x10, 0x08, 0x00,
0x00, 0x3c, 0x42, 0x20, 0x10, 0x00, 0x10, 0x00,
0x00, 0x3c, 0x52, 0x6a, 0x7a, 0x02, 0x3c, 0x00,
0x00, 0x3c, 0x42, 0x42, 0x7e, 0x42, 0x42, 0x00,
0x00, 0x3e, 0x42, 0x3e, 0x42, 0x42, 0x3e, 0x00,
0x00, 0x3c, 0x42, 0x02, 0x02, 0x42, 0x3c, 0x00,
0x00, 0x1e, 0x22, 0x42, 0x42, 0x22, 0x1e, 0x00,
0x00, 0x7e, 0x02, 0x3e, 0x02, 0x02, 0x7e, 0x00,
0x00, 0x7e, 0x02, 0x3e, 0x02, 0x02, 0x02, 0x00,
0x00, 0x3c, 0x42, 0x02, 0x72, 0x42, 0x3c, 0x00,
0x00, 0x42, 0x42, 0x7e, 0x42, 0x42, 0x42, 0x00,
0x00, 0x7c, 0x10, 0x10, 0x10, 0x10, 0x7c, 0x00,
0x00, 0x40, 0x40, 0x40, 0x42, 0x42, 0x3c, 0x00,
0x00, 0x22, 0x12, 0x0e, 0x12, 0x22, 0x42, 0x00,
0x00, 0x02, 0x02, 0x02, 0x02, 0x02, 0x7e, 0x00,
0x00, 0x42, 0x66, 0x5a, 0x42, 0x42, 0x42, 0x00,
0x00, 0x42, 0x46, 0x4a, 0x52, 0x62, 0x42, 0x00,
0x00, 0x3c, 0x42, 0x42, 0x42, 0x42, 0x3c, 0x00,
0x00, 0x3e, 0x42, 0x42, 0x3e, 0x02, 0x02, 0x00,
0x00, 0x3c, 0x42, 0x42, 0x4a, 0x52, 0x3c, 0x00,
0x00, 0x3e, 0x42, 0x42, 0x3e, 0x22, 0x42, 0x00,
0x00, 0x3c, 0x02, 0x3c, 0x40, 0x42, 0x3c, 0x00,
0x00, 0x7f, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00,
0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3c, 0x00,
0x00, 0x42, 0x42, 0x42, 0x42, 0x24, 0x18, 0x00,
0x00, 0x42, 0x42, 0x42, 0x42, 0x5a, 0x24, 0x00,
0x00, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x00,
0x00, 0x41, 0x22, 0x14, 0x08, 0x08, 0x08, 0x00,
0x00, 0x7e, 0x20, 0x10, 0x08, 0x04, 0x7e, 0x00,
0x00, 0x70, 0x10, 0x10, 0x10, 0x10, 0x70, 0x00,
0x00, 0x00, 0x02, 0x04, 0x08, 0x10, 0x20, 0x00,
0x00, 0x0e, 0x08, 0x08, 0x08, 0x08, 0x0e, 0x00,
0x00, 0x08, 0x1c, 0x2a, 0x08, 0x08, 0x08, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff,
0x00, 0x38, 0x44, 0x1e, 0x04, 0x04, 0x7e, 0x00,
0x00, 0x00, 0x1c, 0x20, 0x3c, 0x22, 0x3c, 0x00,
0x00, 0x04, 0x04, 0x3c, 0x44, 0x44, 0x3c, 0x00,
0x00, 0x00, 0x38, 0x04, 0x04, 0x04, 0x38, 0x00,
0x00, 0x20, 0x20, 0x3c, 0x22, 0x22, 0x3c, 0x00,
0x00, 0x00, 0x1c, 0x22, 0x1e, 0x02, 0x3c, 0x00,
0x00, 0x30, 0x08, 0x18, 0x08, 0x08, 0x08, 0x00,
0x00, 0x00, 0x3c, 0x22, 0x22, 0x3c, 0x20, 0x1c,
0x00, 0x02, 0x02, 0x1e, 0x22, 0x22, 0x22, 0x00,
0x00, 0x08, 0x00, 0x0c, 0x08, 0x08, 0x1c, 0x00,
0x00, 0x20, 0x00, 0x20, 0x20, 0x20, 0x24, 0x18,
0x00, 0x04, 0x14, 0x0c, 0x0c, 0x14, 0x24, 0x00,
0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x30, 0x00,
0x00, 0x00, 0x16, 0x2a, 0x2a, 0x2a, 0x2a, 0x00,
0x00, 0x00, 0x1e, 0x22, 0x22, 0x22, 0x22, 0x00,
0x00, 0x00, 0x1c, 0x22, 0x22, 0x22, 0x1c, 0x00,
0x00, 0x00, 0x1e, 0x22, 0x22, 0x1e, 0x02, 0x02,
0x00, 0x00, 0x3c, 0x22, 0x22, 0x3c, 0x20, 0x60,
0x00, 0x00, 0x38, 0x04, 0x04, 0x04, 0x04, 0x00,
0x00, 0x00, 0x1c, 0x02, 0x1c, 0x20, 0x1e, 0x00,
0x00, 0x08, 0x1c, 0x08, 0x08, 0x08, 0x30, 0x00,
0x00, 0x00, 0x22, 0x22, 0x22, 0x22, 0x1c, 0x00,
0x00, 0x00, 0x22, 0x22, 0x14, 0x14, 0x08, 0x00,
0x00, 0x00, 0x22, 0x2a, 0x2a, 0x2a, 0x14, 0x00,
0x00, 0x00, 0x22, 0x14, 0x08, 0x14, 0x22, 0x00,
0x00, 0x00, 0x22, 0x22, 0x22, 0x3c, 0x20, 0x1c,
0x00, 0x00, 0x3e, 0x10, 0x08, 0x04, 0x3e, 0x00,
0x00, 0x70, 0x10, 0x0c, 0x10, 0x10, 0x70, 0x00,
0x00, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00,
0x00, 0x0e, 0x08, 0x30, 0x08, 0x08, 0x0e, 0x00,
0x00, 0x28, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00,
0x3c, 0x42, 0x99, 0x85, 0x85, 0x99, 0x42, 0x3c
};
/* ---------------------------------------- PUBLIC INTERFACES
*/
void FB_Init(uint16 *vram)
{
buff=vram;
}
void FB_Print(const char *text, int x, int y, int colour, int paper)
{
uint16 *base;
base=buff+y*WIDTH+x;
while(*text)
{
int x,y;
int ch;
ch=((*text)-32)*8;
for(y=0;y<8;y++)
{
for(x=0;x<8;x++)
{
if (font[ch]&(1<<x))
{
*(base+x+y*WIDTH)=colour;
}
else
{
if (paper!=-1)
{
*(base+x+y*WIDTH)=paper;
}
}
}
ch++;
}
base+=8;
text++;
}
}
void FB_Centre(const char *text, int y, int colour, int paper)
{
FB_Print(text,WIDTH/2-strlen(text)*4,y,colour,paper);
}
void FB_HLine(int x1, int x2, int y, int colour)
{
uint16 *line;
line=buff+y*WIDTH+x1;
while(x1<=x2)
{
*line++=colour;
x1++;
}
}
void FB_VLine(int x, int y1, int y2, int colour)
{
uint16 *line;
line=buff+y1*WIDTH+x;
while(y1<=y2)
{
*line=colour;
line+=WIDTH;
y1++;
}
}
void FB_Box(int x, int y, int w, int h, int colour)
{
FB_HLine(x,x+w-1,y,colour);
FB_HLine(x,x+w-1,y+h-1,colour);
FB_VLine(x,y,y+h-1,colour);
FB_VLine(x+w-1,y,y+h-1,colour);
}
void FB_FillBox(int x, int y, int w, int h, int colour)
{
int f;
uint16 *base;
base=buff+x+y*WIDTH;
while(h--)
{
for(f=0;f<w;f++)
{
*(base+f)=colour;
}
base+=WIDTH;
}
}
void FB_Clear(void)
{
uint16 *p;
int f;
f=WIDTH*HEIGHT;
p=buff;
while(f--)
{
*p++=0x8000;
}
}
void FB_Blit(sImage *img, int x, int y)
{
if (img->width==WIDTH && img->height==HEIGHT)
{
dmaCopy(img->data8,buff,SCREEN_WIDTH*SCREEN_HEIGHT*2);
}
else
{
int f;
for(f=0;f<img->height;f++)
{
dmaCopy(img->data16+(f*img->width),
buff+x+(y+f)*WIDTH,img->width*2);
}
}
}
|
