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| | PDP-8 Frequently Asked Questions (posted every other month) |
 | | It is amusing to note that the name TPA is very similar in origin to the name PDP used by DEC! There was a decree that computer development in Hungary was to cease, with all computers to be purchased from the USSR. | | | The venture capitalist's insistance on avoiding the term computer was based on the stereotype that computers were big and expensive, needing a computer center and a large staff; by using the term Programmable Data Processor, or PDP, DEC avoided this stereotype. | | | (In early DEC documentation, the plural form "PDPs" is used as a generic term for all DEC computers.) In the early 1960's, DEC was the only manufacturer of large computers without a leasing plan. |
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http://omicron.felk.cvut.cz/FAQ/articles/a1784.html
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| | PDP-8 Summary of Models and Options (posted every other month) |
| | By February 1975, the PDP-8/A was being sold in a workstation configuration, with the CPU and dual 8" diskette drives in a desk with a video terminal (VT52) and optional letter quality printer on top. | | | The MFM drive could be up to 64 MB, with 16 sectors per track, 512 bytes each and at most 8 heads and 1024 (or possibly 4096) cylinders. | | | -- 8 analog to digital converter channels with knob inputs. |
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http://www.cs.uu.nl/wais/html/na-dir/dec-faq/pdp8-models.html
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| | PDP-8 |
| | 12 bit words, 8 instructions, instruction was 3 bits - same instruction set as PDP-5 Architecture max addressability (except for special tricks in some models) - 4096 words | | | OS-8, an 8 inch floppy disk operating system, nicely done. | | | Identical instruction set to PDP-5 except that P Counter was in a real register instead of memory location 0 |
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http://ed-thelen.org/comp-hist/pdp-8.html
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| | The PDP-8 Family |
| | Based on the Intersil 6100 microprocessor, this was built to run the same word processing software as the PDP-8a but it fits entirely inside the case of the video terminal. | | | Files were stored on 8 inch floppy disks using the two drives on the left. | | | The successor to the Classic 8 was the first to use TTL integrated circuits. |
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http://www.piercefuller.com/collect/pdp8.html
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| | pdp-model.txt |
| | The 8/l is essentially a stripped-down 8/i, and as such can have only 8 (or 12) K and a positive bus, whereas later 8/i's could have either bus. | | | The LINC-8 was an attempt to bring DEC some income from the MIT LINC project. | | | It's probably not unreasonable to modify this machine to be -8 compatible, although a little slow due to 8 microsecond memory. |
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http://www.inwap.com/pdp10/pdp-model.txt
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| | PDP-11 - Wikipedia, the free encyclopedia |
| | The PDP-11 was a successor to DEC's PDP-8 computer in the PDP series of computers. | | | Of the 8 registers (numbered 0 through 7), 7 were general-purpose and could be used for most purposes, although register 6 was specially recognized by the hardware as the stack pointer for some instructions; register 7 was the program counter. | | | PDP-11/73 -- The third generation LSI PDP, this system used the "Jaws-11" chip set. |
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http://en.wikipedia.org/wiki/PDP-11
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| | Another Real Machine: The DEC PDP-8 |
| | The PDP 8/I did not change the format of the Extended Arithmetic Element instructions, but it did add one opcode: | | | The PDP 8/e version added features useful for running a multi-user operating system. | | | With the PDP 8/e, the Extended Arithmetic Element was modified slightly. |
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http://www.quadibloc.com/comp/cp0306.htm
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| | PDP-8 - Wikipedia, the free encyclopedia |
| | A PDP-8 on display at the Smithsonian's National Museum of American History in Washington, D.C. This example is from the first generation of PDP-8s, built with discrete transistors and later known as the Straight 8. | | | The PDP-8 was the first successful commercial minicomputer, produced by Digital Equipment Corporation (DEC) in the 1960s. | | | It was introduced on March 22, 1965 [1] and was the first widely sold computer in the DEC PDP series of computers (the PDP-5 was not originally intended to be a general-purpose computer). |
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http://en.wikipedia.org/wiki/PDP-8
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| | :: PDP-8 :: |
| | It has 8 basic instructions and the PDP-8/E executes them in 1.2 microsecond for simple instructions to 4 microsecond for complex memory reference instructions. | | | The PDP-8 is a 12 bit single accumulator machine which can address up to 32K 12 bit words. |
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http://a.parsons.edu/~sachiko/hCw/002/pdp_8.html
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| | Brian Shelburne's PDP-8 Home Page |
| | The PDP-8 was a simple 12-bit word addressable machine with 4096 words of memory and only 8 opcodes. | | | The clean simple and elegant architecture of the classic PDP-8 makes it ans ideal candidate for studying computer organization. | | | Its simplicity and relatively inexpensive price tag, a mere $18,000.00, made it extremely succesful. |
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http://www4.wittenberg.edu/academics/mathcomp/bjsdir/PDP8HomePage.htm
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| | pdp-8e(1) |
| | In the left-hand picture, from left to right, we have: 2 a pdp-8a with 2 RL01s, rare fixed head disks (DF32) and an RX02 8" floppy, a rack with a TU10 tape and controller, and 2 RK05 disks and a pdp-8e with damaged front panel. | | | These racks of assorted horrors are part of the large collection I took away from British Aerospace, Preston, along with the main item, pdp-15(2). |
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http://www.corestore.org/pdp-8e-1.htm
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| | Steve Jones/Bio |
| | (His first computer experience was with a PDP 8/e.) He received his Ph.D. in Communication from the Institute of Communications Research there in 1987, and is author of numerous books, including Society Online, Doing Internet Research, CyberSociety, Virtual Culture, and Pop Music and the Press. | | | Steve Jones has been Internetworking since 1979 when he was using and co-authoring educational materials on the PLATO system at the University of Illinois Urbana-Champaign. |
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http://info.comm.uic.edu/jones/bio.html
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| | Highgate's PDP-8 Page |
| | System Reference Manual, Version 8 (Chapters 5 to 18) | | | System Reference Manual, Version 8 (Chapters 1 to 4) | | | WPS-8 Word Processing System Reference Manual (Chapters 1 to 8) |
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http://highgate.comm.sfu.ca/pdp8
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| | Mark-8 Microcomputer - The Beginning |
| | We were ecstatic when our basic PDP-8/L got an upgrade to 8 kwords, but the extra memory took up about the same space as the PDP-8/L computer itself. | | | This shrine to the Mark 8 Minicomputer discusses the machine with its designer, Jon Titus. | | | Jon was gracious enough to write up most of the data you see here, and also provide some of the diagrams and pictures. |
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http://www.his.com/~jlewczyk/adavie/mark8b.html
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| | The Krten Collection: PDP-8, PDP-11, PDP-12, And Others |
| | The PDP-8 had a very simple architecture -- 8 basic instructions, a 12-bit word, and 4k to 32k words of core (magnetic) memory. | | | The 8/I is the second-largest of the PDP-8 systems (the "straight-8", an 8 with no suffix, is bigger). | | | DEC was bought out by Compaq, and now Compaq has merged with Hewlett-Packard. |
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http://www.parse.com/~museum/pdp8
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| | PDP-8 Simulator Explained |
| | I wrote this PDP-8 simulator at the same time. | | | One could assemble a program with no more than a basic 8 and a teletype. | | | But the arduous process involving feeding multiple paper tapes multiple times through the teletype's ten character per second reader. |
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http://c2.com/~ward/pdp8sim
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| | PDP-8/SL Update |
| | Paper Tape Reader Reading in FOCAL '69 (With Genuine PDP Tape, of Course) | | | As long as no one touches the terminal while reading a tape (and tape is not read during console input), this works well. | | | The paper tape reader I wanted to use with this computer requires 24 volts DC, and I originally designed a small desktop power supply for it consisting of a 30 volt wall wart and a 323K that dropped this to 24 volts. |
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http://juliepalooza.8m.com/sl/pdp8e-2.htm
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| | PDP-8 |
| | Instruction set: 3-bit op code, 1 indirect bit; 8 bits of address |
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http://research.microsoft.com/~gbell/Digital/timeline/1965-2.htm
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| | DEC-PDP-8 |
| | The PDP-8 was also known as the "Classic 8." It used the newly announced R Series logic. |
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http://www.computermuseum.li/Testpage/DEC-PDP-8.htm
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| | PDP-8/IBM-370 Communication |
| | Setting the counter to 8 on every transition of the data line locked the clock to the data stream. | | | The oscillator drove a divide by 16 counter to generate the clock signal. | | | Five years later, and four years after I left the Acushnet Company, the link failed to handle certain file transfers. |
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http://www.sullutions.com/ComputerCommunication.html
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| | PDP-8 Assembler |
| | symbols (identifiers) begin with a letter followed by zero or more letters and or digits; symbols are not case sensitive; symbols should be no more than 8 characters | | | all numbers are assumed octal unless they contain an 8 or 9 (e.g 028) or use a 'd' suffix (e.g. |
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http://userpages.wittenberg.edu/bshelburne/Comp255S/PDP8Assembler.htm
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| | PDP-8/e |
| | That was worked out and I made an 8.5 hour drive (each way) to pick up the 8. | | | When I got there, they were ready and powered everything up so that I knew it all worked. | | | The big sticking factor was being able to pick up the equipment. |
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http://www.shiresoft.com/pdp-11/pdp8e
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| | PDP 8/L console |
| | > >From: Lawrence LeMay > >My PDP 8/L that I recently acquired, has a cable that i assume is for > >the console terminal. | | | It has a 9 pin male connector with only pins > >1 through 6 present. |
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http://www.classiccmp.org/pipermail/cctalk/2000-May/145428.html
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| | Encyclopedia4U - PDP - Encyclopedia Article |
| | The LINC and the PDP-8 can be considered the first minicomputers, and perhaps the first personal computers as well. | | | PDP is an abbreviation for Programmable Data Processor ; they were a series of computers, several of them ground-breaking and very influential, made by Digital Equipment Corporation. | | | They were given that name because at the time of their introduction, computers had a reputation of being large and expensive machines, and the PDP machines were aimed at a market which couldn't afford the larger computers. |
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http://www.encyclopedia4u.com/p/pdp.html
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| | Digital Equipment Corporation (DEC) Vintage Mini- & Microcomputers |
| | Calendar was on the PDP 11/23 (running RT-11 and TSX) at Northport High School, revised by E. Schaefer at a nearby school in March 1975; it was enhanced by David Kraus in November 1982. | | | The most popular and well-known of these PDP's were the PDP-8, 10 and 11 minicomputers; the latter made its debut in June 1970. | | | Newer PDP-11's were manufactured in subsequent years with more memory, speed and disk capacity; this continues today with PDP-compatible hardware and PDP emulators for non-PDP hardware. |
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http://www.eskimo.com/~nickz/dec.html
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| | Encyclopedia4U - PDP - Encyclopedia Article |
| | The LINC and the PDP-8 can be considered the first minicomputers, and perhaps the first personal computers as well. | | | PDP is an abbreviation for Programmable Data Processor ; they were a series of computers, several of them ground-breaking and very influential, made by Digital Equipment Corporation. | | | They were given that name because at the time of their introduction, computers had a reputation of being large and expensive machines, and the PDP machines were aimed at a market which couldn't afford the larger computers. |
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http://www.encyclopedia4u.com/p/pdp.html
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| | PDP-11 - Wikipedia, the free encyclopedia |
| | The PDP-11 was a successor to DEC's PDP-8 computer in the PDP series of computers. | | | The PDP-11 was a series of 16-bit minicomputers sold by Digital Equipment Corp. in the 1970s and 1980s. | | | PDP-11/73 -- The third generation LSI PDP, this system used the "Jaws-11" chip set. |
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http://en.wikipedia.org/wiki/PDP-11
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| | PDP - Wikipedia, the free encyclopedia |
| | The LINC and the PDP-8 can be considered the first minicomputers, and perhaps the first personal computers as well. | | | They were given that name because at the time of their introduction, computers had a reputation of being large and expensive machines, and the PDP machines were aimed at a market which couldn't afford the larger computers. | | | PDP is an abbreviation for Programmed Data Processor, the name of a series of |
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http://en.wikipedia.org/wiki/PDP
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| | Encyclopedia: Unix |
| | Jump to: navigation, search Research Unix is a term commonly used to refer to versions of the Unix operating system for DEC PDP-7, PDP-9 PDP-11 and VAX and Interdata 7/32 and 8/32 computers, developed in the Bell Labs Computing Science Research Center. | | | Versions 8, 9 and 10 were developed through the 1980s but were only ever released to a few universities, though they did generate papers describing the new work. | | | Version 7 Unix, the last version of Research Unix to be released widely, was released in 1979. |
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http://www.nationmaster.com/encyclopedia/Unix
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