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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
/* usage:
# extract the 1K atari ROM font:
dd if=atariosb.rom of=romfont bs=256 skip=8 count=4
# extract the Apple II Taipan font:
dd if=taipan.dsk of=font bs=256 skip=54 count=3
# create the Atari 8-bit Taipan font:
cat romfont font | ./convfont > taifont.raw
# or, create the Atari 8-bit Taipan font as a binary load:
cat romfont font | ./convfont -x > taifont.xex
*/
/*
taipan font file order:
0-31: `a-z{|}" block
32-63: @A-Z[\]^_
64-95: space !"#$%&'()*+,-./0-9:;>=<?
atari screen code order:
0-31: space !"#$%&'()*+,-./0-9:;>=<?
32-63: @A-Z[\]^_
64-95 graphics chars
96-127: `a-z and 4 graphics chars
*/
/* custom characters for ship graphics. 1st byte
is screencode, the other 8 are the pixel data. */
char shipdata[][9] = {
{0x02 , 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x3f},
{0x03 , 0x18, 0x1f, 0x1f, 0x10, 0x10, 0x10, 0xff, 0xff},
{0x04 , 0x00, 0xf0, 0xfc, 0x3e, 0x00, 0x00, 0xfc, 0xf0},
{0x06 , 0x00, 0x00, 0x40, 0x70, 0x7c, 0x47, 0x40, 0x40},
{0x1b , 0x1f, 0x3f, 0xff, 0x3f, 0x1f, 0x3f, 0xff, 0x7f},
{0x1c , 0xc0, 0xf0, 0xfc, 0xf0, 0xc0, 0xf0, 0xfc, 0xf0},
{0x1d , 0x07, 0x03, 0x07, 0x0f, 0x07, 0x03, 0x07, 0x0f},
{0x1e , 0xfe, 0xfc, 0xfe, 0xff, 0xfe, 0xf8, 0xfe, 0xff},
{0x20 , 0xfe, 0xf8, 0xfe, 0xff, 0xfe, 0xfe, 0xfd, 0xf9},
{0x3b , 0xc0, 0xfe, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x1f},
{0x3c , 0x00, 0x00, 0xc0, 0xff, 0x8f, 0x8e, 0x8e, 0xfe},
{0x3d , 0x38, 0x38, 0x38, 0x38, 0xff, 0x38, 0x38, 0x38},
{0x3e , 0x00, 0x00, 0x00, 0x01, 0xff, 0xe3, 0xe3, 0xe3},
{0x3f , 0x00, 0x00, 0x00, 0xff, 0x8e, 0x8e, 0x8e, 0xff},
{0x40 , 0xc3, 0xcf, 0xff, 0xff, 0x3f, 0x3e, 0x3c, 0xf8},
{0x46 , 0x1f, 0x0f, 0x07, 0x07, 0x07, 0x03, 0x03, 0x03},
{0x47 , 0xf0, 0xe0, 0xc0, 0xc0, 0xc0, 0xc0, 0x80, 0x80},
{ 0, 0, 0, 0, 0, 0, 0, 0, 0 }
};
/* this ends up in LORCHA.DAT */
char shipshape[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x02, 0x03, 0x04, 0x00, 0x06,
0x00, 0x00, 0x1b, 0x80, 0x1c, 0x1d, 0x1e,
0x00, 0x00, 0x1b, 0x80, 0x1c, 0x1d, 0x20,
0x00, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40,
0x00, 0x46, 0x80, 0x80, 0x80, 0x80, 0x47,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
void bitswap(unsigned char *b, int lim) {
unsigned char j, k;
// fprintf(stderr, "bitswap(%x, %d)\n", b, lim);
do {
k = b[lim];
j = 0;
j |= (k & 0x01 ? 0x80 : 0);
j |= (k & 0x02 ? 0x40 : 0);
j |= (k & 0x04 ? 0x20 : 0);
j |= (k & 0x08 ? 0x10 : 0);
j |= (k & 0x10 ? 0x08 : 0);
j |= (k & 0x20 ? 0x04 : 0);
j |= (k & 0x40 ? 0x02 : 0);
j |= (k & 0x80 ? 0x01 : 0);
b[lim] = j;
} while(--lim > 0);
}
void clear0bits(unsigned char *b, int lim) {
do {
*b++ &= 0xfe;
} while(--lim > 0);
}
int main(int argc, char **argv) {
int i, j;
unsigned char font[1024], xex[6];
read(0, font, 1024);
read(0, font + (96 * 8), 32 * 8);
bitswap(font + (96 * 8), 32 * 8);
read(0, font + (32 * 8), 32 * 8);
bitswap(font + (32 * 8), 32 * 8);
read(0, font + (0 * 8), 32 * 8);
bitswap(font + (0 * 8), 32 * 8);
/* this stuff is from visual inspection via bitmapdump.pl */
clear0bits(font + 0x1f8, 7);
clear0bits(font + 0x301, 7);
clear0bits(font + 0x308, 8);
clear0bits(font + 0x330, 8);
clear0bits(font + 0x3a0, 8);
clear0bits(font + 0x3d8, 8);
clear0bits(font + 0x3e8, 8);
clear0bits(font + 0x040, 16);
clear0bits(font + 0x1e8, 8);
/* fix the vertical bar */
font[0x3e0] =
font[0x3e1] =
font[0x3e2] =
font[0x3e3] =
font[0x3e4] =
font[0x3e5] =
font[0x3e6] =
font[0x3e7] = 0x18;
/* stick ship data where it goes */
for(i=0; shipdata[i][0]; i++) {
for(j=0; j<8; j++) {
font[ shipdata[i][0] * 8 + j ] = shipdata[i][j+1];
}
}
if(argc > 1) {
xex[0] = xex[1] = 0xff;
xex[2] = 0x00; xex[3] = 0xb8; /* load address $B800 */
xex[4] = 0xff; xex[5] = 0xbb; /* end address $bbff */
write(1, xex, 6);
}
write(1, font, 1024);
i = open("LORCHA.DAT", O_WRONLY | O_CREAT);
write(i, shipshape, sizeof(shipshape));
close(i);
return 0;
}
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