![]() ![]() ![]() For example, pin 1 always connects to pin 1, and is always numbered '1' in all of the above illustrations and tables, regardless of whether it is 'male' or 'female', or viewed from 'inside' or 'outside'. ![]() The pins for all DB-9/25 connectors are numbered in such a way that each pin number always corresponds to the same pin number on the other side. This cannot happen with a properly wired null-modem cable. The Amiga serial port also uses non-standard signals (see the Amiga Forever documentation), which may damage the equipment on the other side. In other cases, the software will not work at all. ![]() In some cases, including proper connections but poor quality or too long cables, Amiga Explorer may transfer short files, but it will fail with longer files (in one or both directions). If the wires are not connected properly, Amiga Explorer will not work. High quality commercial cables follow this specification, but lower quality and 'do-it-yourself' cables sometimes differ. This ensures, for example, that if there is an overflow in the serial port's input data buffer, the other side stops transmitting, and waits until the buffer is ready to receive more data.Īmiga Explorer requires a complete null-modem cable, with 7 wires. Amiga Explorer, like many other programs, additionally uses RTS and CTS for hardware handshaking, and DTR and DSR for each side to inform the other side whether it is ready to process data or not. This is accomplished by connecting GND (system ground) on both sides, and cross-connecting TxD (transmit data) with RxD (receive data). This should never be attempted, as it may damage one or both computers.įor some applications, including terminal software when no hardware handshaking is used, very simple null-modem cables with three wires are sufficient to exchange data (although not in the most reliable and efficient way). While a null-modem serial cable will not attach to it (as it also uses female connectors), certain other combinations of cables and gender changers can in theory be used to try to connect a parallel port on one computer with the serial port of another computer. Warning: the 25-pin female connector on the back of many computers is a parallel port (not a serial port). ![]()
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