MPO383 RTP SLOT: Jeremy Barr (April 27

MPO383 RTP SLOT A simple circuit used the DMA feature of the 1802 to permit entry of programs and data into RAM through the toggle switches. Entering a byte via the toggle switches and pressing the "input" button would enter a byte into RAM and display it on the pair of hex LEDs, then advance the DMA counter to the next location. The word could then be modified directly using an additional 8 binary toggle switches to specify the data required. It featured two hexadecimal LED displays for byte data value output and a set of 8 toggle switches for input. If an error was made in program entry, it could be corrected by turning on memory protect, turning off load mode (thus resetting the program counter to zero), turning on load mode, and pressing "input" to advance to the address of the incorrect data. These bit-switches are more normally used with the computer stopped to specify some memory address to be viewed (via the indicator lights on the front panel), or set. A "memory protect" switch could be used to disable memory alteration. Should the instructor judge that the student is encountering difficulty in flight, control is transferred to the master transmitter merely by releasing the switch.|And, what are the Top-selling Titles?