static void
tzx_write_hardware( libspectrum_tape_block *block, libspectrum_byte **buffer,
libspectrum_byte **ptr, size_t *length )
{
size_t i, count;
/* We need one ID byte, one count byte and then three bytes for every
entry */
count = libspectrum_tape_block_count( block );
libspectrum_make_room( buffer, 2 + 3 * count, ptr, length );
/* Write out the metadata */
*(*ptr)++ = LIBSPECTRUM_TAPE_BLOCK_HARDWARE;
*(*ptr)++ = count;
/* And the info */
for( i = 0; i < count; i++ ) {
*(*ptr)++ = libspectrum_tape_block_types( block, i );
*(*ptr)++ = libspectrum_tape_block_ids ( block, i );
*(*ptr)++ = libspectrum_tape_block_values( block, i );
}
}
// Return a string describing a give tape block
const char *Tape::GetBlockDetails (libspectrum_tape_block *block)
{
static char sz[128];
sz[0] = '\0';
char szExtra[64] = "";
char szName[11] = "";
const char *psz = NULL;
libspectrum_byte *data = libspectrum_tape_block_data(block);
long length = static_cast<long>(libspectrum_tape_block_data_length(block));
// Is there enough data to include a possible filename?
if (length >= 12)
{
for (int i = 0 ; i < 10 ; i++)
{
char ch = data[i+2];
szName[i] = (ch >= ' ' && ch <= 0x7f) ? ch : '?';
}
szName[10] = '\0';
}
// Spectrum header length and type byte?
if (length == 17+2 && data[0] == 0x00)
{
// Examine Spectrum file type
switch (data[1])
{
case 0:
{
psz = "ZX BASIC";
UINT uLine = (data[15] << 8) | data[14];
if (uLine != 0xffff)
sprintf(szExtra, " LINE %u", uLine);
break;
}
case 1: psz = "ZX DATA()"; break;
case 2: psz = "ZX DATA$()"; break;
case 3:
{
psz = "ZX CODE";
UINT uAddr = (data[15] << 8) | data[14];
UINT uLen = (data[13] << 8) | data[12];
sprintf(szExtra, " %u,%u", uAddr, uLen);
break;
}
}
}
// SAM header length and type byte?
// Real length is 82, but TZX spec suggests there could be up to 7-8 trailing bits, so accept 83
else if ((length == 80+2 || length == 80+1+2) && data[0] == 0x01)
{
// Examine SAM file type
switch (data[1])
{
case 16:
{
psz = "BASIC";
UINT uLine = (data[40] << 8) | data[39];
if (data[38] == 0)
sprintf(szExtra, " LINE %u", uLine);
break;
}
case 17: psz = "DATA()"; break;
case 18: psz = "DATA$"; break;
case 19:
{
psz = "CODE";
UINT uAddr = TPeek(data+32) + 16384;
UINT uLen = TPeek(data+35);
sprintf(szExtra, " %u,%u", uAddr, uLen);
if (data[38] == 0)
sprintf(szExtra+strlen(szExtra), ",%u", TPeek(data+38));
break;
}
case 20:
{
psz = "SCREEN$";
UINT uMode = data[17]+1;
sprintf(szExtra, " MODE %u", uMode);
break;
}
}
}
// Do we have a type string?
if (psz)
{
// Start with type and append filename
strcpy(sz, psz);
strcat(sz, ": '");
strcat(sz, szName);
strcat(sz, "'");
// Append any additional type-specific details
if (szExtra[0])
{
strcat(sz, " ");
strcat(sz, szExtra);
}
}
// No details yet?
if (!sz[0])
{
libspectrum_tape_type type = libspectrum_tape_block_type(block);
switch (type)
{
case LIBSPECTRUM_TAPE_BLOCK_ROM:
case LIBSPECTRUM_TAPE_BLOCK_TURBO:
{
// Raw tape block data length
size_t length = libspectrum_tape_block_data_length(block);
// If possible, exclude the type, sync, and checksum bytes from the length
if (length >= 3)
length -= 3;
snprintf(sz, sizeof(sz), "%u bytes", length);
break;
}
case LIBSPECTRUM_TAPE_BLOCK_PURE_DATA:
case LIBSPECTRUM_TAPE_BLOCK_RAW_DATA:
snprintf(sz, sizeof(sz), "%u bytes", libspectrum_tape_block_data_length(block));
break;
case LIBSPECTRUM_TAPE_BLOCK_PURE_TONE:
snprintf(sz, sizeof(sz), "%u tstates", libspectrum_tape_block_pulse_length(block));
break;
case LIBSPECTRUM_TAPE_BLOCK_PULSES:
snprintf(sz, sizeof(sz), "%u pulses", libspectrum_tape_block_count(block));
break;
case LIBSPECTRUM_TAPE_BLOCK_PAUSE:
snprintf(sz, sizeof(sz), "%ums", libspectrum_tape_block_pause(block));
break;
case LIBSPECTRUM_TAPE_BLOCK_GROUP_START:
case LIBSPECTRUM_TAPE_BLOCK_COMMENT:
case LIBSPECTRUM_TAPE_BLOCK_MESSAGE:
case LIBSPECTRUM_TAPE_BLOCK_CUSTOM:
snprintf(sz, sizeof(sz), "%s", libspectrum_tape_block_text(block));
break;
case LIBSPECTRUM_TAPE_BLOCK_JUMP:
{
int offset = libspectrum_tape_block_offset(block);
if (offset >= 0)
snprintf(sz, sizeof(sz), "Forward %d blocks", offset);
else
snprintf(sz, sizeof(sz), "Backward %d blocks", -offset);
break;
}
case LIBSPECTRUM_TAPE_BLOCK_LOOP_START:
snprintf(sz, sizeof(sz), "%u iterations", libspectrum_tape_block_count(block));
break;
case LIBSPECTRUM_TAPE_BLOCK_SELECT:
snprintf(sz, sizeof(sz), "%u options", libspectrum_tape_block_count(block));
break;
case LIBSPECTRUM_TAPE_BLOCK_GENERALISED_DATA:
snprintf(sz, sizeof(sz), "%u data symbols",
libspectrum_tape_generalised_data_symbol_table_symbols_in_block(libspectrum_tape_block_data_table(block)));
break;
case LIBSPECTRUM_TAPE_BLOCK_ARCHIVE_INFO:
{
size_t count = libspectrum_tape_block_count(block);
for (size_t i = 0 ; i < count ; i++)
{
int id = libspectrum_tape_block_ids(block, i);
const char *value = libspectrum_tape_block_texts(block, i);
// Full title TZX id?
if (id == 0x00)
strncpy(sz, value, sizeof(sz)-1);
}
break;
}
case LIBSPECTRUM_TAPE_BLOCK_HARDWARE:
{
size_t count = libspectrum_tape_block_count(block);
for (size_t i = 0 ; i < count ; i++)
{
int type = libspectrum_tape_block_types(block, i);
int id = libspectrum_tape_block_ids(block, i);
// Skip anything but the TZX "Computers" type
if (type != 0)
continue;
// Check for relevant computer ids
if (id == 9)
strcpy(sz, "SAM Coupe");
else if ((id >= 0x00 && id <= 0x05) || id == 0x0e)
strcpy(sz, "ZX Spectrum");
else if (id == 0x08)
strcpy(sz, "Pentagon");
else if (id == 0x06 || id == 0x07)
strcpy(sz, "Timex Sinclair");
else
snprintf(sz, sizeof(sz), "Unknown (%02X)", id);
}
break;
}
default:
break;
}
}
return sz;
}
