Using and Programming the Psion Organizer II: A Complete Guide

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Using and Programming the Psion Organizer II: A Complete Guide

Using and Programming the Psion Organizer II: A Complete Guide

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The name "Organiser" was not used for later Psion handhelds, such as the SIxteen-Bit Organiser (SIBO) family Psion MC400 laptop, the Psion Series 3 and the 32-bit Psion Series 5 machines, which were of a clamshell design with a QWERTY keyboard. As to hardware architecture and operating system, these had no links to the earlier Organiser range, other than the end-user programming language, which shared a great deal of structure with OPL. It is often rumoured that EPOC stands for "Electronic Piece Of Cheese" however Colly Myers, who was Symbian's CEO from founding until 2002, [12] said in an interview that it stood for 'epoch' and nothing more. This development effort produced the clamshell QWERTY-based Psion Series 3 palmtops (1993–98), which sold in the hundreds of thousands, and the Psion MC-series laptops, which sold poorly compared to the DOS-based laptops of the era. Manufacturing of the Series 3 was discontinued in 1998 and there was no Series 4 (the company reportedly adopted the Far Eastern superstition of not using the number 4).

Note that although Psi2Win does not provide any of the functionality of the MAKE.EXE and UNMAKE.EXE A far more sophisticated programming tool was later made available with the implementation of the Forth language, but was available to registered professional developers rather than end users. The Psion Forth Development System for the Organiser I was a powerful set of IBM PC-based cross-development tools for producing Forth application software, including a Forth compiler. The Forth system on the Organiser I had a compiler to intermediate code, interpreter and runtime, and had several unusual design features one being that it could interpret – that is, read and execute – Forth intermediate code directly in place on a Datapak, rather than needing to copy it into precious RAM first, despite the Datapaks not being execute-in-place memory-mapped. And, actually, I didn't even have a 2-row header on hand, so I made this one by gluing two single-row headers together). The Organiser also has its own built-in programming language called OPL. The language is designed to exploit all the machine's facilities to the full and to let you tailor the Organiser to your own specific needs.You are now asked for the name of the file on the Psion. When you have entered the file name you want, press EXE. The internal memory of the Model LZ64 holds around 64000 characters. In addition, one or more Datapaks can boost the storage capacity considerably - by up to 128000 characters per DatapaK The important pins are D0..D7 which are connected directly to the CPU's "port 2" data bus. There's also ground, +5v, and various other outputs of the Arduino to the data pins via 510 ohm resistors (chosen mostly at random). This is low enough resistance to overcome the internal pullups on the data

Psion, Intel settle 'Netbook' trademark dispute". Archived from the original on 8 April 2012 . Retrieved 3 March 2010. The company name is an acronym standing for "Potter Scientific Instruments", after the company's founder, David Potter. The acronym PSI was already in use elsewhere in the world so "ON" was added to make the name PSION unique, according to David Potter this was explained as his ambition was so strong that it was Potter Scientific Instruments - Or Nothing. David Potter remained managing director until 1999 and was chairman of the company until late 2009. The Series 3 still retained the original way of managing files (the available program icons were shown in a horizontal line and the associated files dropped down beneath them) of its predecessor models, and the new models were powered by 4.7MHz processor and came with either 128 or 256 RAM.

have another byte to send, we assert that byte instead, and the Psion will know it's a new byte because the value has changed. If we line Consumer Models CM/XP/LA 2-line Industrial Models Organiser Internals 4-line Consumer Models LZ/LZ64 4-line Industrial Models Special Editions Branded Versions

Introduced in 1984, the Psion Organiser series defined the first generation of electronic organizers or PDAs (personal digital assistants). Even though these devices are now over 30 years old, the Psion Organiser scene is alive and well: with new hardware and software is still being developed by enthusiasts the world over. The Organiser II, with its brand-new USB interface Glover, Tony (23 May 2004). "NHS deal with Psion heralds move away from Windows". The Business Online. Archived from the original on 6 June 2004 . Retrieved 17 June 2007. Having determined that 2 consecutive reads got the same value, we print the byte to the screen unless it's 0 (which is used to A to 2 bytes in X), but it does the job. With machine code in hand, we just have to write an OPL program to execute it. Thus it could be used to dial a telephone number by holding the device to the mouthpiece of a tone dialing telephone.The serial cable (which, avid readers will recall, terminates in a bulky DB25 connector) is now surplus to requirements, so I can cut it off to free up space inside the Comms Link's plastic case. Hopefully the Bluetooth adapter will fit inside the case, making the whole thing vaguely elegant... In 2004, Psion disposed of the company's remaining Symbian shareholding to Nokia, as they no longer regarded it as a core part of their strategy. [8] Last years (2010–2012) [ edit ] to the "reader" that it wants to swap roles, and then both sides invert their bus direction. I'm not sure if we'll need to do this, but The Embeddable Linux Kernel Subset project has produced a small subset of Linux that runs on the Series 3a. [4] Psion Series 3 [ edit ] Psion Series 3, (on 5 cm squares) filesystem built on top of these EPROMs, which (I assume) "deletes" files by writing a bit to say that the file is no longer there, but



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