Field Engineering Theory of Operation

It can be seen that starting at −180˚, an additional phase shift of 180˚ (positive or negative) brings the signal back to zero, which is in phase with the source signal and would

Causes terminal to accept subsequent characters as foreground (displayed as green on black). When placed as the character immediately preceding a foreground field,

Each device on the board has a specific address or range of addresses, as shown on the memory map (Figure 2-2). Bank 0 is divided into 8 kbyte blocks inside the gate

This TTL level input requests that an interrupt sequence begin within the microprocessor. The microprocessor will complete the current instruction being executed

Read Emitter Interrupt: This interrupt occurs when the emitter CB makes after a printer start command has been given and a printer scan cycle has been completed..

Places the paper tape reader-punch device status word (DSW) on the in bus. The DSW is loaded into the P-C accumulator to be analyzed by the program. If specified by

Data register parity Address check (Used only with optional punch feed read feature.) An invalid card code was read. (Used only with optional punch feed read

Pressing the start key turns off the stop light and allows the processor to continue its normal operation.. The start key is also used, in conjunction with the CE modes