PDP 1. 1 Wikipedia. Mind Billy Milligan Ebook. This article is about the PDP 1. For the PDP 1. 1 processor architecture, see PDP 1. Ted.jpg' alt='Bit Che Serial' title='Bit Che Serial' />Tabtight professional, free when you need it, VPN service. Www. RomanBlack. com Cheap RF modules made easy How to do serial comms using the cheap ebay RF 433315 MHz modules 22nd April 2013. These cheap RF modules usually. Se7en 1995 Official Trailer Brad Pitt, Morgan Freeman Movie HD Subscribe to CLASSIC TRAILERS http Subscribe to TRAILERS httpbit. PDP 1. 14. 0. The processor is at the bottom. A TU5. 6 dual DECtape drive is installed above it. The PDP 1. 1 is a series of 1. Digital Equipment Corporation DEC from 1. PDP series. In total, around 6. PDP 1. 1s of all models were sold, making it one of DECs most successful product lines. The PDP 1. 1 is considered by some experts123 to be the most popular minicomputer ever. The PDP 1. 1 included a number of innovative features in its instruction set and additional general purpose registers that made it much easier to program than earlier models in the series. DSP. Parallelamente al microcontrollore, e in continua evoluzione di potenza e di mercato, esistono i DSP Digital Signal Processor che incorporano moduli. Additionally, the innovative Unibus system allowed external devices to be easily interfaced to the system using direct memory access, opening the system to a wide variety of peripherals. The PDP 1. 1 replaced the PDP 8 in many real time applications, although both product lines lived in parallel for more than 1. But the ease of programming of the PDP 1. The design of the PDP 1. Intel x. 861 and the Motorola 6. Design features of PDP 1. Digital Equipment, influenced the design of other operating systems such as CPM and hence also MS DOS. BitTorrent un software P2P che permette di scaricare lo stesso file da pi fonti riducendo quindi il tempo di download e lintasamento delle reti. The first officially named version of Unix ran on the PDP 1. It is commonly stated that the C programming language took advantage of several low level PDP 1. An effort to expand the PDP 1. VAX 1. 1 design, which took part of its name from the PDP 1. HistoryeditPrevious machineseditIn 1. DEC introduced what is considered to be the first commercial minicomputer in the form of the PDP 5. This was a 1. 2 bit design adapted from the 1. LINC machine that was intended to be used in a lab setting. Chess Games Downloads. DEC slightly simplified the LINC system and instruction set, aiming the PDP 5 at smaller settings that did not need the power of their larger 1. PDP 4. The PDP 5 was a success, ultimately selling about 5. During this period, the computer market was moving from computer word lengths based on units of 6 bits to units of 8 bits, following the introduction of the 7 bit ASCII standard. In 1. 96. 76. 8, DEC engineers designed a 1. PDP X,6 but management ultimately cancelled the project. Several of the engineers from the PDP X left DEC and formed Data General. The next year they introduced the 1. Data General Nova. The Nova was a major success, selling tens of thousands of units and launching what would become one of DECs major competitors through the 1. ReleaseeditA subsequent effort, code named Desk Calculator, looked at a variety of options before choosing what became the 1. PDP 1. 1 8 The PDP 1. January 1. 97. 0 and shipments began early that year. DEC sold over 1. 70,0. PDP 1. 1s in the 1. Initially manufactured of small scale transistortransistor logic, a single board large scale integration version of the processor was developed in 1. A two or three chip processor, the J 1. The last models of the PDP 1. PDP 1. 19. 4 and 1. Innovative featureseditInstruction set orthogonalityeditThe PDP 1. For example, instead of instructions such as load and store, the PDP 1. There are no specific input or output instructions the PDP 1. IO and so the same move instruction is used orthogonality even enables moving data directly from an input device to an output device. More complex instructions such as add likewise can have memory, register, input, or output as source or destination. Catia 32 Bit there. Most operands can apply any of eight addressing modes to eight registers. The addressing modes provide register, immediate, absolute, relative, deferred indirect, and indexed addressing, and can specify autoincrementation and autodecrementation of a register by one byte instructions or two word instructions. Use of relative addressing lets a machine language program be position independent. No dedicated IO instructionseditEarly models of the PDP 1. Unibus, as input and output devices were mapped to memory addresses. An inputoutput device determined the memory addresses to which it would respond, and specified its own interrupt vector and interrupt priority. This flexible framework provided by the processor architecture made it unusually easy to invent new bus devices, including devices to control hardware that had not been contemplated when the processor was originally designed. DEC openly published the basic Unibus specifications, even offering prototyping bus interface circuit boards, and encouraging customers to develop their own Unibus compatible hardware. The Unibus made the PDP 1. One of the predecessors of Alcatel Lucent, the Bell Telephone Manufacturing Company, developed the BTMC DPS 1. X. 2. 5 network and used PDP 1. Unibus directly connected to the DPS 1. Higher performance members of the PDP 1. PDP 1. 14. 5 Unibus and 1. Q bus systems, departed from the single bus approach. Instead, memory was interfaced by dedicated circuitry and space in the CPU cabinet, while the Unibus continued to be used for IO only. In the PDP 1. 17. Massbus. Although inputoutput devices continued to be mapped into memory addresses, some additional programming was necessary to set up the added bus interfaces. InterruptseditThe PDP 1. Interrupts are serviced by software service routines, which could specify whether they themselves could be interrupted achieving interrupt nesting. The event that causes the interrupt is indicated by the device itself, as it informs the processor of the address of its own interrupt vector. Interrupt vectors are blocks of two 1. The first word of the interrupt vector contains the address of the interrupt service routine and the second word the value to be loaded into the PSW priority level on entry to the service routine. The article on PDP 1. Designed for mass productioneditThe PDP 1. The dimensions of its pieces were relatively non critical. It used a wire wrappedbackplane. That is, the printed circuit boards plugged into a backplane connector. The backplane connectors had square pins that could be connected to by wrapping wires around them. The corners of the pins would bite into the wire to form a gas tight i. Q Bus board with LSI 1. CPU. DEC Fonz 1. F1. Chipset. DEC Jaws 1. J1. 1 Chipset. The LSI 1. PDP 1. 10. 3, introduced in February 1. PDP 1. 1 model produced using large scale integration the entire CPU is contained on four LSI chips made by Western Digital the MCP 1. It uses a bus which is a close variant of the Unibus called the LSI Bus or Q Bus it differs from the Unibus primarily in that addresses and data are multiplexed onto a shared set of wires rather than having separate sets of wires. It also differs slightly in how it addresses IO devices and it eventually allowed a 2. Unibus only allows an 1. Unibus does not support. The CPU microcode includes a debugger firmware with a direct serial interface RS 2. This let the operator do debugging by typing commands and reading octal numbers, rather than operating switches and reading lights, the typical debugging method at the time. The operator can thus examine and modify the computers registers, memory, and inputoutput devices, diagnosing and perhaps correcting failures in software and peripherals unless a failure disables the microcode itself. The operator can also specify which disk to boot from. Both innovations increased the reliability and decreased the cost of the LSI 1. Later Q Bus based systems such as the LSI 1. Digital Equipment Corporation.