| #ifndef _SERIAL_H |
| #define _SERIAL_H |
| |
| #include <stdio.h> |
| |
| #define LOG_SERIAL 0 |
| |
| class CSerial { |
| |
| protected: |
| CSerial *PrevDevice; |
| CSerial *NextDevice; |
| char Name[16]; |
| unsigned int DeviceNr; |
| static unsigned int NrOfDevicesAttached; |
| static CSerial *RootDevice; |
| static CSerial *LastDevice; |
| |
| public: |
| CSerial(); |
| virtual ~CSerial(); |
| CSerial(unsigned int DevNr); |
| CSerial *getNext() { return NextDevice; }; |
| unsigned int getDeviceNumber() { return DeviceNr; }; |
| // |
| virtual void update() {}; |
| virtual void UpdateSerialState(unsigned char ) { }; |
| virtual unsigned char readBusWithUpdate() { |
| return readBus(); |
| } |
| // State of IEC lines (bit 7 - DATA, bit 6 - CLK, bit 4 - ATN) |
| static unsigned char serialPort[16]; |
| static void InitPorts(); |
| static unsigned char readBus(); |
| static class CSerial *Devices[16]; |
| static CSerial *getRoot() { return RootDevice; }; |
| // |
| friend class TED; |
| }; |
| |
| inline unsigned char CSerial::readBus() |
| { |
| CSerial *sDevPtr = CSerial::getRoot(); |
| while (sDevPtr) { |
| sDevPtr->update(); |
| sDevPtr = sDevPtr->getNext(); |
| } |
| // the bus is using open-collectors so do an AND with all devices attached |
| #if LOG_SERIAL |
| { |
| static unsigned char prev = 0xFF; |
| unsigned char retval = |
| serialPort[0] |
| &serialPort[4]&serialPort[5] // printers |
| &serialPort[8]&serialPort[9]&serialPort[10]&serialPort[11]; |
| if (retval ^ prev) { |
| fprintf(stderr, "Serial read: %02X\n", retval); |
| prev = retval; |
| } |
| return retval; |
| } |
| #else |
| unsigned char retVal = serialPort[0] |
| &serialPort[4]&serialPort[5] // printers |
| &serialPort[8]&serialPort[9]&serialPort[10]&serialPort[11]; // drives |
| return retVal; |
| #endif |
| } |
| |
| class CTrueSerial : public CSerial { |
| public: |
| CTrueSerial(unsigned int DevNr) : CSerial(DevNr) { }; |
| }; |
| |
| class IEC; |
| class CIECDevice; |
| |
| class IecFakeSerial : public CSerial |
| { |
| public: |
| IecFakeSerial(unsigned int DevNr, CIECDevice *iecDev); |
| virtual ~IecFakeSerial() {}; |
| virtual void UpdateSerialState() { |
| update(); |
| }; |
| virtual void UpdateSerialState(unsigned char newAtn) { |
| update(); |
| writeBus(newAtn); |
| }; |
| virtual unsigned char readBusWithUpdate() { |
| #if 0 |
| update(); |
| return serialPort[dev_nr]; |
| #else |
| return readBus(); |
| #endif |
| } |
| virtual unsigned char readBusWithoutUpdate() { |
| return serialPort[0] |
| & serialPort[4] |
| & serialPort[8] & serialPort[9] & serialPort[10] & serialPort[11]; |
| } |
| void writeBus(unsigned char newLines); |
| inline void updateBus() { |
| serialPort[dev_nr] = dataLine | clkLine; |
| } |
| virtual void update(); |
| private: |
| IecFakeSerial(); |
| protected: |
| void interpretIecByte(); |
| CIECDevice *iecDevice; |
| unsigned int state; |
| unsigned int step; |
| unsigned int addr; |
| unsigned int secondaryAddress; |
| unsigned int secondaryAddress_prev; |
| unsigned char dev_nr; |
| size_t timeout; |
| size_t cycleCount; |
| unsigned char errorState; |
| unsigned int eoi; |
| unsigned int clkLine; |
| unsigned int dataLine; |
| unsigned char io_byte; |
| unsigned int bitCounter; |
| unsigned int dataTransfered; |
| unsigned char atnInLine; |
| unsigned char oldAtnLine; |
| unsigned long clock_rate; |
| // |
| char nameBuffer[16]; // Buffer for file names and command strings |
| char *namePtr; // Pointer for reception of file name |
| int nameLength; // Received length of file name |
| }; |
| |
| #endif // _SERIAL_H |