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TZXProcessing.ino
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TZXProcessing.ino
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void clearBuffer()
{
for(int i=0;i<=buffsize;i++)
{
wbuffer[i][0]=0;
wbuffer[i][1]=0;
}
}
word TickToUs(word ticks) {
return (word) ((((float) ticks)/3.5)+0.5);
}
void checkForEXT (char *filename) {
if(checkForTap(filename)) { //Check for Tap File. As these have no header we can skip straight to playing data
currentTask=PROCESSID;
currentID=TAP;
if((readfile(1,bytesRead))==1) {
if (input[0] == 0x16) {
currentID=ORIC;
}
}
//printtextF(PSTR("TAP Playing"),0);
}
if(checkForP(filename)) { //Check for P File. As these have no header we can skip straight to playing data
currentTask=PROCESSID;
currentID=ZXP;
//printtextF(PSTR("ZX81 P Playing"),0);
}
if(checkForO(filename)) { //Check for O File. As these have no header we can skip straight to playing data
currentTask=PROCESSID;
currentID=ZXO;
//printtextF(PSTR("ZX80 O Playing"),0);
}
if(checkForAY(filename)) { //Check for AY File. As these have no TAP header we must create it and send AY DATA Block after
currentTask=GETAYHEADER;
currentID=AYO;
AYPASS = 0; // Reset AY PASS flags
hdrptr = HDRSTART; // Start reading from position 1 -> 0x13 [0x00]
//printtextF(PSTR("AY Playing"),0);
}
if(checkForUEF(filename)) { //Check for UEF File. As these have no TAP header we must create it and send AY DATA Block after
currentTask=GETUEFHEADER;
currentID=UEF;
//Serial.println(F("UEF playing"));
//printtext("AY Playing",0);
}
}
void TZXPlay() {
Timer.stop(); //Stop timer interrupt
// on entry, fileIndex is already pointing to the file entry you want to play
// and fileName has already been set accordingly
entry.close();
entry.open(&dir, fileIndex, O_RDONLY);
bytesRead=0; //start of file
currentTask=GETFILEHEADER; //First task: search for header
checkForEXT (fileName);
currentBlockTask = READPARAM; //First block task is to read in parameters
clearBuffer();
isStopped=false;
pinState=LOW; //Always Start on a LOW output for simplicity
count = 255; //End of file buffer flush
EndOfFile=false;
if(pinState==LOW)
{
LowWrite();
}
else
{
HighWrite();
}
Timer.setPeriod(1000); //set 1ms wait at start of a file.
}
bool checkForTap(char *filename) {
//Check for TAP file extensions as these have no header
byte len = strlen(filename);
if(strstr_P(strlwr(filename + (len-4)), PSTR(".tap"))) {
return true;
}
return false;
}
bool checkForP(char *filename) {
//Check for TAP file extensions as these have no header
byte len = strlen(filename);
if(strstr_P(strlwr(filename + (len-2)), PSTR(".p"))) {
return true;
}
return false;
}
bool checkForO(char *filename) {
//Check for TAP file extensions as these have no header
byte len = strlen(filename);
if(strstr_P(strlwr(filename + (len-2)), PSTR(".o"))) {
return true;
}
return false;
}
bool checkForAY(char *filename) {
//Check for AY file extensions as these have no header
byte len = strlen(filename);
if(strstr_P(strlwr(filename + (len-3)), PSTR(".ay"))) {
return true;
}
return false;
}
bool checkForUEF(char *filename) {
//Serial.println(F("checkForUEF"));
byte len = strlen(filename);
if(strstr_P(strlwr(filename + (len-4)), PSTR(".uef"))) {
return true;
}
return false;
}
void TZXStop() {
Timer.stop(); //Stop timer
isStopped=true;
entry.close(); //Close file
// DEBUGGING Stuff
//lcd.setCursor(0,1);
//lcd.print(blkchksum,HEX); lcd.print("ck "); lcd.print(bytesRead); lcd.print(" "); lcd.print(ayblklen);
bytesRead=0; // reset read bytes PlayBytes
blkchksum = 0; // reset block chksum byte for AY loading routine
AYPASS = 0; // reset AY flag
ID15switch = 0; // ID15switch
}
void TZXPause() {
isStopped=pauseOn;
}
void TZXLoop() {
noInterrupts(); //Pause interrupts to prevent var reads and copy values out
copybuff = morebuff;
morebuff = LOW;
isStopped = pauseOn;
interrupts();
if(copybuff==HIGH) {
btemppos=0; //Buffer has swapped, start from the beginning of the new page
copybuff=LOW;
}
if(btemppos<=buffsize) // Keep filling until full
{
TZXProcess(); //generate the next period to add to the buffer
if(currentPeriod>0) {
noInterrupts(); //Pause interrupts while we add a period to the buffer
wbuffer[btemppos][workingBuffer ^ 1] = currentPeriod; //add period to the buffer
interrupts();
btemppos+=1;
}
} else {
if ((pauseOn == 0)&& (currpct<100)) lcdTime();
newpct=(100 * bytesRead)/filesize;
if (currpct == 100){
currpct = 0;
Counter2();
}
if ((newpct >currpct)&& (newpct % 1 == 0)) {
Counter2();
currpct = newpct;
}
}
}
void TZXSetup() {
pinMode(outputPin, OUTPUT); //Set output pin
LowWrite(); //Start output LOW
isStopped=true;
pinState=LOW;
Timer.initialize();
}
void TZXProcess() {
byte r = 0;
currentPeriod = 0;
if(currentTask == GETFILEHEADER) {
//grab 7 byte string
ReadTZXHeader();
//set current task to GETID
currentTask = GETID;
}
if(currentTask == GETAYHEADER) {
//grab 8 byte string
ReadAYHeader();
//set current task to PROCESSID
currentTask = PROCESSID;
}
if (currentTask == GETUEFHEADER) {
//grab 12 byte string
ReadUEFHeader();
//set current task to GETCHUNKID
currentTask = GETCHUNKID;
}
if(currentTask == GETCHUNKID) {
if(r=ReadWord(bytesRead)==2) {
chunkID = outWord;
if(r=ReadDword(bytesRead)==4) {
bytesToRead = outLong;
parity = 0;
if (chunkID == ID0104) {
//bytesRead+= 3;
bytesToRead+= -3;
bytesRead+= 1;
//grab 1 byte Parity
if(ReadByte(bytesRead)==1) {
if (outByte == 'O') parity = wibble ? 2 : 1;
else if (outByte == 'E') parity = wibble ? 1 : 2;
else parity = 0 ; // 'N'
}
bytesRead+= 1;
}
} else {
chunkID = IDCHUNKEOF;
}
} else {
chunkID = IDCHUNKEOF;
}
if (!uefTurboMode) {
zeroPulse = UEFZEROPULSE;
onePulse = UEFONEPULSE;
} else {
zeroPulse = UEFTURBOZEROPULSE;
onePulse = UEFTURBOONEPULSE;
}
lastByte=0;
//reset data block values
currentBit=0;
pass=0;
//set current task to PROCESSCHUNKID
currentTask = PROCESSCHUNKID;
currentBlockTask = READPARAM;
UEFPASS = 0;
}
if(currentTask == PROCESSCHUNKID) {
//CHUNKID Processing
switch(chunkID) {
case ID0000:
bytesRead+=bytesToRead;
currentTask = GETCHUNKID;
break;
case ID0100:
//bytesRead+=bytesToRead;
writeUEFData();
break;
case ID0104:
//parity = 1; // ParityOdd i.e complete with value to get Odd number of ones
/* stopBits = */ //stopBitPulses = 1;
writeUEFData();
//bytesRead+=bytesToRead;
break;
case ID0110:
if(currentBlockTask==READPARAM){
if(r=ReadWord(bytesRead)==2) {
if (!uefTurboMode) {
pilotPulses = UEFPILOTPULSES;
pilotLength = UEFPILOTLENGTH;
} else {
// turbo mode
pilotPulses = UEFTURBOPILOTPULSES;
pilotLength = UEFTURBOPILOTLENGTH;
}
}
currentBlockTask = PILOT;
} else {
UEFCarrierToneBlock();
}
//bytesRead+=bytesToRead;
//currentTask = GETCHUNKID;
break;
case ID0111:
if(currentBlockTask==READPARAM){
if(r=ReadWord(bytesRead)==2) {
pilotPulses = UEFPILOTPULSES; // for TURBOBAUD1500 is outWord<<2
pilotLength = UEFPILOTLENGTH;
}
currentBlockTask = PILOT;
UEFPASS+=1;
} else if (UEFPASS == 1){
UEFCarrierToneBlock();
if(pilotPulses==0) {
currentTask = PROCESSCHUNKID;
currentByte = 0xAA;
lastByte = 1;
currentBit = 10;
pass=0;
UEFPASS = 2;
}
} else if (UEFPASS == 2){
parity = 0; // NoParity
writeUEFData();
if (currentBit==0) {
currentTask = PROCESSCHUNKID;
currentBlockTask = READPARAM;
}
} else if (UEFPASS == 3){
UEFCarrierToneBlock();
}
break;
case ID0112:
//if(currentBlockTask==READPARAM){
if(r=ReadWord(bytesRead)==2) {
if (outWord>0) {
//Serial.print(F("delay="));
//Serial.println(outWord,DEC);
temppause = outWord;
currentID = IDPAUSE;
currentPeriod = temppause;
bitSet(currentPeriod, 15);
currentTask = GETCHUNKID;
} else {
currentTask = GETCHUNKID;
}
}
//}
break;
case ID0114:
if(r=ReadWord(bytesRead)==2) {
pilotPulses = UEFPILOTPULSES;
//pilotLength = UEFPILOTLENGTH;
bytesRead-=2;
}
UEFCarrierToneBlock();
bytesRead+=bytesToRead;
currentTask = GETCHUNKID;
break;
case ID0116:
//if(currentBlockTask==READPARAM){
if(r=ReadDword(bytesRead)==4) {
byte * FloatB = (byte *) &outLong;
outWord = (((*(FloatB+2)&0x80) >> 7) | (*(FloatB+3)&0x7f) << 1) + 10;
outWord = *FloatB | (*(FloatB+1))<<8 | ((outWord&1)<<7)<<16 | (outWord>>1)<<24 ;
outFloat = *((float *) &outWord);
outWord= (int) outFloat;
if (outWord>0) {
//Serial.print(F("delay="));
//Serial.println(outWord,DEC);
temppause = outWord;
currentID = IDPAUSE;
currentPeriod = temppause;
bitSet(currentPeriod, 15);
currentTask = GETCHUNKID;
} else {
currentTask = GETCHUNKID;
}
}
//}
break;
case ID0117:
if(r=ReadWord(bytesRead)==2) {
if (outWord == 300) {
passforZero = 8;
passforOne = 16;
currentTask = GETCHUNKID;
} else {
passforZero = 2;
passforOne = 4;
currentTask = GETCHUNKID;
}
}
break;
case IDCHUNKEOF:
if(!count==0) {
//currentPeriod = 32767;
currentPeriod = 10;
bitSet(currentPeriod, 15); //bitSet(currentPeriod, 12);
count += -1;
} else {
bytesRead+=bytesToRead;
stopFile();
return;
}
break;
default:
//Serial.print(F("Skip id "));
//Serial.print(chunkID);
bytesRead+=bytesToRead;
currentTask = GETCHUNKID;
break;
}
}
if(currentTask == GETID) {
//grab 1 byte ID
if(ReadByte(bytesRead)==1) {
currentID = outByte;
} else {
currentID = EOF;
}
//reset data block values
currentBit=0;
pass=0;
//set current task to PROCESSID
currentTask = PROCESSID;
currentBlockTask = READPARAM;
}
if(currentTask == PROCESSID) {
//ID Processing
switch(currentID) {
case ID10:
//Process ID10 - Standard Block
switch (currentBlockTask) {
case READPARAM:
if(r=ReadWord(bytesRead)==2) {
pauseLength = outWord;
}
if(r=ReadWord(bytesRead)==2) {
bytesToRead = outWord +1;
}
if(r=ReadByte(bytesRead)==1) {
if(outByte == 0) {
pilotPulses = PILOTNUMBERL;
} else {
pilotPulses = PILOTNUMBERH;
}
bytesRead += -1;
}
pilotLength = PILOTLENGTH;
sync1Length = SYNCFIRST;
sync2Length = SYNCSECOND;
zeroPulse = ZEROPULSE;
onePulse = ONEPULSE;
currentBlockTask = PILOT;
usedBitsInLastByte=8;
break;
default:
StandardBlock();
break;
}
break;
case ID11:
//Process ID11 - Turbo Tape Block
switch (currentBlockTask) {
case READPARAM:
if(r=ReadWord(bytesRead)==2) {
pilotLength = TickToUs(outWord);
}
if(r=ReadWord(bytesRead)==2) {
sync1Length = TickToUs(outWord);
}
if(r=ReadWord(bytesRead)==2) {
sync2Length = TickToUs(outWord);
}
if(r=ReadWord(bytesRead)==2) {
zeroPulse = TickToUs(outWord);
}
if(r=ReadWord(bytesRead)==2) {
onePulse = TickToUs(outWord);
}
if(r=ReadWord(bytesRead)==2) {
pilotPulses = outWord;
}
if(r=ReadByte(bytesRead)==1) {
usedBitsInLastByte = outByte;
}
if(r=ReadWord(bytesRead)==2) {
pauseLength = outWord;
}
if(r=ReadLong(bytesRead)==3) {
bytesToRead = outLong +1;
}
currentBlockTask = PILOT;
break;
default:
StandardBlock();
break;
}
break;
case ID12:
//Process ID12 - Pure Tone Block
if(currentBlockTask==READPARAM){
if(r=ReadWord(bytesRead)==2) {
pilotLength = TickToUs(outWord);
}
if(r=ReadWord(bytesRead)==2) {
pilotPulses = outWord;
//DebugBlock("Pilot Pulses", pilotPulses);
}
currentBlockTask = PILOT;
} else {
PureToneBlock();
}
break;
case ID13:
//Process ID13 - Sequence of Pulses
if(currentBlockTask==READPARAM) {
if(r=ReadByte(bytesRead)==1) {
seqPulses = outByte;
}
currentBlockTask = DATA;
} else {
PulseSequenceBlock();
}
break;
case ID14:
//process ID14 - Pure Data Block
if(currentBlockTask==READPARAM) {
if(r=ReadWord(bytesRead)==2) {
zeroPulse = TickToUs(outWord);
}
if(r=ReadWord(bytesRead)==2) {
onePulse = TickToUs(outWord);
}
if(r=ReadByte(bytesRead)==1) {
usedBitsInLastByte = outByte;
}
if(r=ReadWord(bytesRead)==2) {
pauseLength = outWord;
}
if(r=ReadLong(bytesRead)==3) {
bytesToRead = outLong+1;
}
currentBlockTask=DATA;
} else {
PureDataBlock();
}
break;
case ID15:
//process ID15 - Direct Recording
if(currentBlockTask==READPARAM) {
if(r=ReadWord(bytesRead)==2) {
//Number of T-states per sample (bit of data) 79 or 158 - 22.6757uS for 44.1KHz
TstatesperSample = TickToUs(outWord);
}
if(r=ReadWord(bytesRead)==2) {
//Pause after this block in milliseconds
pauseLength = outWord;
}
if(r=ReadByte(bytesRead)==1) {
//Used bits in last byte (other bits should be 0)
usedBitsInLastByte = outByte;
}
if(r=ReadLong(bytesRead)==3) {
// Length of samples' data
bytesToRead = outLong+1;
}
currentBlockTask=DATA;
} else {
currentPeriod = TstatesperSample;
bitSet(currentPeriod, 14);
DirectRecording();
}
break;
case ID19:
//Process ID19 - Generalized data block
switch (currentBlockTask) {
case READPARAM:
if(r=ReadDword(bytesRead)==4) {
//bytesToRead = outLong;
}
if(r=ReadWord(bytesRead)==2) {
//Pause after this block in milliseconds
pauseLength = outWord;
}
bytesRead += 86 ; // skip until DataStream filename
//bytesToRead += -88 ; // pauseLength + SYMDEFs
currentBlockTask=DATA;
break;
case DATA:
ZX8081DataBlock();
break;
}
break;
case ID20:
//process ID20 - Pause Block
if(r=ReadWord(bytesRead)==2) {
if(outWord>0) {
temppause = outWord;
currentID = IDPAUSE;
} else {
currentTask = GETID;
}
}
break;
case ID21:
//Process ID21 - Group Start
if(r=ReadByte(bytesRead)==1) {
bytesRead += outByte;
}
currentTask = GETID;
break;
case ID22:
//Process ID22 - Group End
currentTask = GETID;
break;
case ID24:
//Process ID24 - Loop Start
if(r=ReadWord(bytesRead)==2) {
loopCount = outWord;
loopStart = bytesRead;
}
currentTask = GETID;
break;
case ID25:
//Process ID25 - Loop End
loopCount += -1;
if(loopCount!=0) {
bytesRead = loopStart;
}
currentTask = GETID;
break;
case ID2A:
//Skip//
bytesRead+=4;
currentTask = GETID;
break;
case ID2B:
//Skip//
bytesRead+=5;
currentTask = GETID;
break;
case ID30:
//Process ID30 - Text Description
if(r=ReadByte(bytesRead)==1) {
//Show info on screen - removed until bigger screen used
//byte j = outByte;
//for(byte i=0; i<j; i++) {
// if(ReadByte(bytesRead)==1) {
// lcd.print(char(outByte));
// }
//}
bytesRead += outByte;
}
currentTask = GETID;
break;
case ID31:
//Process ID31 - Message block
if(r=ReadByte(bytesRead)==1) {
// dispayTime = outByte;
}
if(r=ReadByte(bytesRead)==1) {
bytesRead += outByte;
}
currentTask = GETID;
break;
case ID32:
//Process ID32 - Archive Info
//Block Skipped until larger screen used
if(ReadWord(bytesRead)==2) {
bytesRead += outWord;
}
currentTask = GETID;
break;
case ID33:
//Process ID32 - Archive Info
//Block Skipped until larger screen used
if(ReadByte(bytesRead)==1) {
bytesRead += (long(outByte) * 3);
}
currentTask = GETID;
break;
case ID35:
//Process ID35 - Custom Info Block
//Block Skipped
bytesRead += 0x10;
if(r=ReadDword(bytesRead)==4) {
bytesRead += outLong;
}
currentTask = GETID;
break;
case ID4B:
//Process ID4B - Kansas City Block (MSX specific implementation only)
switch(currentBlockTask) {
case READPARAM:
if(r=ReadDword(bytesRead)==4) { // Data size to read
bytesToRead = outLong - 12;
}
if(r=ReadWord(bytesRead)==2) { // Pause after block in ms
pauseLength = outWord;
}
if (TSXspeedup == 0){
if(r=ReadWord(bytesRead)==2) { // T-states each pilot pulse
pilotLength = TickToUs(outWord);
}
if(r=ReadWord(bytesRead)==2) { // Number of pilot pulses
pilotPulses = outWord;
}
if(r=ReadWord(bytesRead)==2) { // T-states 0 bit pulse
zeroPulse = TickToUs(outWord);
}
if(r=ReadWord(bytesRead)==2) { // T-states 1 bit pulse
onePulse = TickToUs(outWord);
}
ReadWord(bytesRead);
} else {
//Fixed speedup baudrate, reduced pilot duration
pilotPulses = 10000;
bytesRead += 10;
switch(BAUDRATE){
case 1200:
pilotLength = onePulse = TickToUs(729);
zeroPulse = TickToUs(1458);
break;
case 2400:
pilotLength = onePulse = TickToUs(365);
zeroPulse = TickToUs(730);
break;
case 3600:
pilotLength = onePulse = TickToUs(243);
zeroPulse = TickToUs(486);
break;
case 3760:
pilotLength = onePulse = TickToUs(233);
zeroPulse = TickToUs(466);
break;
}
} //TSX_SPEEDUP
currentBlockTask = PILOT;
break;
case PILOT:
//Start with Pilot Pulses
if (!pilotPulses--) {
currentBlockTask = DATA;
} else {
currentPeriod = pilotLength;
}
break;
case DATA:
//Data playback
writeData4B();
break;
case PAUSE:
//Close block with a pause
temppause = pauseLength;
currentID = IDPAUSE;
break;
}
break;
case TAP:
//Pure Tap file block
switch(currentBlockTask) {
case READPARAM:
pauseLength = PAUSELENGTH;
if(r=ReadWord(bytesRead)==2) {
bytesToRead = outWord+1;
}
if(r=ReadByte(bytesRead)==1) {
if(outByte == 0) {
pilotPulses = PILOTNUMBERL + 1;
} else {
pilotPulses = PILOTNUMBERH + 1;
}
bytesRead += -1;
}
pilotLength = PILOTLENGTH;
sync1Length = SYNCFIRST;
sync2Length = SYNCSECOND;
zeroPulse = ZEROPULSE;
onePulse = ONEPULSE;
currentBlockTask = PILOT;
usedBitsInLastByte=8;
break;
default:
StandardBlock();
break;
}
break;
case ZXP:
switch(currentBlockTask) {
case READPARAM:
pauseLength = PAUSELENGTH*5;
currentChar=0;
currentBlockTask=PILOT;
break;
case PILOT:
ZX81FilenameBlock();
break;
case DATA:
ZX8081DataBlock();
break;
}
break;
case ZXO:
switch(currentBlockTask) {
case READPARAM:
pauseLength = PAUSELENGTH*5;
currentBlockTask=DATA;
break;
case DATA:
ZX8081DataBlock();
break;
}
break;
case AYO: //AY File - Pure AY file block - no header, must emulate it
switch(currentBlockTask) {
case READPARAM:
pauseLength = PAUSELENGTH; // Standard 1 sec pause
// here we must generate the TAP header which in pure AY files is missing.
// This was done with a DOS utility called FILE2TAP which does not work under recent 32bit OSs (only using DOSBOX).
// TAPed AY files begin with a standard 0x13 0x00 header (0x13 bytes to follow) and contain the
// name of the AY file (max 10 bytes) which we will display as "ZXAYFile " followed by the
// length of the block (word), checksum plus 0xFF to indicate next block is DATA.
// 13 00[00 03(5A 58 41 59 46 49 4C 45 2E 49)1A 0B 00 C0 00 80]21<->[1C 0B FF<AYFILE>CHK]
//if(hdrptr==1) {
//bytesToRead = 0x13-2; // 0x13 0x0 - TAP Header minus 2 (FLAG and CHKSUM bytes) 17 bytes total
//}
if(hdrptr==HDRSTART) {
//if (!AYPASS) {
pilotPulses = PILOTNUMBERL + 1;
}
else {
pilotPulses = PILOTNUMBERH + 1;
}
pilotLength = PILOTLENGTH;
sync1Length = SYNCFIRST;
sync2Length = SYNCSECOND;
zeroPulse = ZEROPULSE;
onePulse = ONEPULSE;
currentBlockTask = PILOT; // now send pilot, SYNC1, SYNC2 and DATA (writeheader() from String Vector on 1st pass then writeData() on second)
if (hdrptr==HDRSTART) AYPASS = 1; // Set AY TAP data read flag only if first run
if (AYPASS == 2) { // If we have already sent TAP header
blkchksum = 0;
bytesRead = 0;
bytesToRead = ayblklen+2; // set length of file to be read plus data byte and CHKSUM (and 2 block LEN bytes)
AYPASS = 5; // reset flag to read from file and output header 0xFF byte and end chksum
}
usedBitsInLastByte=8;
break;
default:
StandardBlock();
break;
}
break;
case ORIC:
//ReadByte(bytesRead);
//OricByteWrite();
switch(currentBlockTask) {
case READPARAM: // currentBit = 0 y count = 255
case SYNC1:
if (currentBit >0) OricBitWrite();
else {
//if (count >0) {
ReadByte(bytesRead);currentByte=outByte;currentBit = 11; bitChecksum = 0;lastByte=0;
if (currentByte==0x16) count--;
else {currentBit = 0; currentBlockTask=SYNC2;} //0x24
//}
//else currentBlockTask=SYNC2;
}
break;
case SYNC2:
if(currentBit >0) OricBitWrite();
else {
if (count >0) {currentByte=0x16; currentBit = 11; bitChecksum = 0;lastByte=0; count--;}
else {count=1; currentBlockTask=SYNCLAST;} //0x24
}
break;
case SYNCLAST:
if(currentBit >0) OricBitWrite();
else {
if (count >0) {currentByte=0x24; currentBit = 11; bitChecksum = 0;lastByte=0; count--;}
else {count=9;lastByte=0;currentBlockTask=HEADER;}
}
break;
case HEADER:
if(currentBit >0) OricBitWrite();
else {
if (count >0) {
ReadByte(bytesRead);currentByte=outByte;currentBit = 11; bitChecksum = 0;lastByte=0;
if (count == 5) bytesToRead = 256*outByte;
else if (count == 4) bytesToRead += (outByte +1) ;
else if (count == 3) bytesToRead -= (256 * outByte) ;
else if (count == 2) bytesToRead -= outByte;
count--;
}
else currentBlockTask=NAME;
}
break;
case NAME:
if (currentBit >0) OricBitWrite();
else {
ReadByte(bytesRead);currentByte=outByte;currentBit = 11; bitChecksum = 0;lastByte=0;
if (currentByte==0x00) {count=1;currentBit = 0; currentBlockTask=NAMELAST;}
}
break;
case NAMELAST:
if(currentBit >0) OricBitWrite();
else {
if (count >0) {currentByte=0x00; currentBit = 11; bitChecksum = 0;lastByte=0; count--;}
else {count=100;lastByte=0;currentBlockTask=GAP;}
}
break;
case GAP:
if(count>0) {
currentPeriod = ORICONEPULSE;
count--;
} else {
currentBlockTask=DATA;
}
break;
case DATA:
OricDataBlock();
break;
case PAUSE:
//currentPeriod = 100; // 100ms pause
//bitSet(currentPeriod, 15);
if(!count==0) {
currentPeriod = 32769;
count += -1;
} else {
count= 255;
currentBlockTask=SYNC1;
}
break;
}