Michel2/HxCFloppyEmulator
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Code Issues Releases Activity

FM sector reader : false sync word detection issue mitigation : now expect Ox00 before the sync word.

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This commit is contained in:
Jean-François DEL NERO
2026-01-18 20:08:55 +01:00
parent 8c73d34cd7
commit f1232ee250
1 changed files with 12 additions and 9 deletions
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libhxcfe/sources/tracks/track_formats/iso_ibm_fm_track.c
+12 -9
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@@ -189,17 +189,20 @@ int get_next_FM_sector(HXCFE* floppycontext,HXCFE_SIDE * track,HXCFE_SECTCFG * s
//; 1 1 1 1 1 1 0 1 -- FD
//11111011
fm_buffer[0]=0x55;
fm_buffer[1]=0x11;
fm_buffer[2]=0x14;
fm_buffer[3]=0x55;
fm_buffer[0]=0x44;
fm_buffer[1]=0x44;
fm_buffer[2]=0x55;
fm_buffer[3]=0x11;
fm_buffer[4]=0x14;
fm_buffer[5]=0x55;
i=0;
do
{
fm_buffer[2] = (datamark[i] >> 8) & 0xFF;
fm_buffer[3] = datamark[i] & 0xFF;
bit_offset = searchBitStream(track->databuffer,track->tracklen,((88+16)*8*2),fm_buffer,4*8,old_bit_offset);
fm_buffer[4] = (datamark[i] >> 8) & 0xFF;
fm_buffer[5] = datamark[i] & 0xFF;
bit_offset = searchBitStream(track->databuffer,track->tracklen,((88+16)*8*2),fm_buffer,6*8,old_bit_offset);
i++;
}while(i<6 && bit_offset==-1 );
@@ -222,8 +225,8 @@ int get_next_FM_sector(HXCFE* floppycontext,HXCFE_SIDE * track,HXCFE_SECTCFG * s
memset(tmp_sector_index,0,(1+sector_size+2) * sizeof(int));
sector->startdataindex = bit_offset;
sector->endsectorindex = fmtobin(track->databuffer,tmp_sector_index,track->tracklen,tmp_sector,1+sector_size+2,bit_offset+(0*8),0);
sector->startdataindex = bit_offset+(2*8);
sector->endsectorindex = fmtobin(track->databuffer,tmp_sector_index,track->tracklen,tmp_sector,1+sector_size+2,bit_offset+(2*8),0);
CRC16_Init(&CRC16_High,&CRC16_Low,(unsigned char*)crctable,0x1021,0xFFFF);
for(k=0;k<1+sector_size+2;k++)