C64 RAW TAPE (.TAP) FILE FORMAT.
000C UBYTE Version
000D UBYTE For future use...
0010 ULONG data length (Intel format LSB,MSB)
0014 UBYTE data
Each data byte represent the length of a pulse (the time until the c64's hardware triggers again).
The length is (8*data) cycles (PAL C64), i.e. the data byte of 2F represent (47*8/985248) seconds.
The data byte value of 00 represents overflow, any pulselength of more than 255*8 cycles.
As above but data value of 00 is now followed by three bytes, representing a 24 bit value of C64
cyles (NOT times 8). The order is as follow: 00 <bit0-7> <bit8-15> <bit16-24>.