void csw_poll()
{
int c;
uint8_t dat;
if (!csw_dat) return;
for (c = 0; c < 10; c++)
{
dat = csw_dat[csw_point++];
if (csw_point >= (8 * 1024 * 1024))
{
csw_point = 0;
csw_loop = 1;
}
if (csw_skip)
csw_skip--;
else if (csw_intone && dat > 0xD) /*Not in tone any more - data start bit*/
{
csw_point++; /*Skip next half of wave*/
if (acia_tapespeed) csw_skip = 6;
csw_intone = 0;
csw_indat = 1;
csw_datbits = csw_enddat = 0;
dcdlow();
return;
}
else if (csw_indat && csw_datbits != -1 && csw_datbits != -2)
{
csw_point++; /*Skip next half of wave*/
if (acia_tapespeed) csw_skip = 6;
csw_enddat >>= 1;
if (dat <= 0xD)
{
csw_point += 2;
if (acia_tapespeed) csw_skip += 6;
csw_enddat |= 0x80;
}
csw_datbits++;
if (csw_datbits == 8)
{
csw_receive(csw_enddat);
csw_datbits = -2;
return;
}
}
else if (csw_indat && csw_datbits == -2) /*Deal with stop bit*/
void uef_poll()
{
int c;
uint32_t templ;
float *tempf;
uint8_t temp;
if (!uef_f)
return;
if (!uef_inchunk)
{
uef_startchunk = 1;
// printf("%i ",gztell(uef));
gzread(uef_f, &uef_chunkid, 2);
gzread(uef_f, &uef_chunklen, 4);
if (gzeof(uef_f))
{
gzseek(uef_f, 12, SEEK_SET);
gzread(uef_f, &uef_chunkid, 2);
gzread(uef_f, &uef_chunklen, 4);
uefloop = 1;
}
uef_inchunk = 1;
uef_chunkpos = 0;
// printf("Chunk ID %04X len %i\n",uef_chunkid,uef_chunklen);
}
// else
// printf("Chunk %04X\n",uef_chunkid);
switch (uef_chunkid)
{
case 0x000: /*Origin*/
for (c = 0; c < uef_chunklen; c++)
gzgetc(uef_f);
uef_inchunk = 0;
return;
case 0x005: /*Target platform*/
for (c = 0; c < uef_chunklen; c++)
gzgetc(uef_f);
uef_inchunk = 0;
return;
case 0x100: /*Raw data*/
if (uef_startchunk)
{
dcdlow();
uef_startchunk = 0;
}
uef_chunklen--;
if (!uef_chunklen)
{
uef_inchunk = 0;
}
uef_receive(gzgetc(uef_f));
return;
case 0x104: /*Defined data*/
if (!uef_chunkpos)
{
uef_chunkdatabits = gzgetc(uef_f);
gzgetc(uef_f);
gzgetc(uef_f);
uef_chunklen -= 3;
uef_chunkpos = 1;
}
else
{
uef_chunklen--;
if (uef_chunklen <= 0)
uef_inchunk = 0;
temp = gzgetc(uef_f);
// printf("%i : %i %02X\n",gztell(uef),uef_chunklen,temp);
if (uef_chunkdatabits == 7) uef_receive(temp & 0x7F);
else uef_receive(temp);
}
return;
case 0x110: /*High tone*/
uef_toneon = 2;
if (!uef_intone)
{
dcd();
uef_intone = gzgetc(uef_f);
uef_intone |= (gzgetc(uef_f) << 8);
uef_intone /= 20;
if (!uef_intone) uef_intone = 1;
// printf("uef_intone %i\n",uef_intone);
}
else
{
uef_intone--;
if (uef_intone == 0)
{
uef_inchunk = 0;
}
}
return;
case 0x111: /*High tone with dummy byte*/
uef_toneon = 2;
if (!uef_intone)
{
dcd();
uef_intone = gzgetc(uef_f);
uef_intone |= (gzgetc(uef_f)<<8);
uef_intone /= 20;
if (!uef_intone) uef_intone = 1;
}
else
{
uef_intone--;
if (uef_intone == 0 && uef_inchunk == 2)
{
uef_inchunk = 0;
}
else if (!uef_intone)
{
uef_inchunk = 2;
uef_intone = gzgetc(uef_f);
uef_intone |= (gzgetc(uef_f) << 8);
uef_intone /= 20;
if (!uef_intone) uef_intone = 1;
uef_receive(0xAA);
}
}
return;
case 0x112: /*Gap*/
uef_toneon = 0;
if (!uef_intone)
{
// dcd();
uef_intone = gzgetc(uef_f);
uef_intone |= (gzgetc(uef_f) << 8);
uef_intone /= 20;
// printf("gap uef_intone %i\n",uef_intone);
if (!uef_intone) uef_intone = 1;
}
else
{
uef_intone--;
if (uef_intone == 0)
{
uef_inchunk = 0;
}
}
return;
case 0x113: /*Float baud rate*/
templ = gzgetc(uef_f);
templ |= (gzgetc(uef_f) << 8);
templ |= (gzgetc(uef_f) << 16);
templ |= (gzgetc(uef_f) << 24);
tempf = (float *)&templ;
tapellatch = (1000000 / ((*tempf) / 10)) / 64;
pps = (*tempf) / 10;
uef_inchunk = 0;
return;
case 0x116: /*Float gap*/
uef_toneon = 0;
if (!uef_chunkpos)
{
templ = gzgetc(uef_f);
templ |= (gzgetc(uef_f) << 8);
templ |= (gzgetc(uef_f) << 16);
templ |= (gzgetc(uef_f) << 24);
tempf = (float *)&templ;
uef_chunkf = *tempf;
//printf("Gap %f %i\n",uef_chunkf,pps);
uef_chunkpos = 1;
// uef_chunkf=4;
}
else
{
// printf("Gap now %f\n",uef_chunkf);
uef_chunkf -= ((float)1 / (float)pps);
if (uef_chunkf <= 0) uef_inchunk = 0;
}
return;
case 0x114: /*Security waves*/
case 0x115: /*Polarity change*/
// default:
for (c = 0; c < uef_chunklen; c++)
gzgetc(uef_f);
uef_inchunk = 0;
return;
default:
for (c = 0; c < uef_chunklen; c++)
gzgetc(uef_f);
uef_inchunk = 0;
return;
//116 : float gap
//113 : float baud rate
}
// allegro_exit();
// printf("Bad chunk ID %04X length %i\n",uef_chunkid,uef_chunklen);
// exit(-1);
}