For hardware, due to the clone dimensions, the best fit was the Raspberry PI 3, which gives me the possibility to use the “little CP500” as a very elegant development platform as well as a game machine. The SDLTRS is an open source multi-platform emulator (Windows, Linux, and Mac). The “little” CP500 would have the right scale so it would be built around an old 7″ monitor I took from a car headrest.Īs software platform for my clone I decided, after some tests, to go with SDLTRS. Recently I decided to fix that, creating my own CP500 clone and, for the lack of space, I decided to build it using a reduced scale. So much involvement with the CP500, but I was never able to have my own. I also worked on countless projects other than the CP500, including the CP400 (CoCo clone), but that is stories for another article! Throughout the CP500 lifespan, I worked in many different projects that improved the machine, like the 80-column video for CP/M support (which debuted as model CP500 M80) the redesign of the computer PCB, which aimed reducing its size (for the CP500 M80C) the hardware reconfiguration to double the CPU speed (for the CP500 TURBO) the capacitive keyboard and other peripherals. All that work had only one objective, prepare me to work on the CP500 development! I remember to spend several scorching days reading the manual and more than often not remembering what I had just read after dozing off out of exhaustion. My first task when I joined the team was to read and understand “head to toe” the TRS-80 Model III technical manual. The article “My CP500 Prológica miniature version.”īack in 1984, after I left the Nova Eletronica magazine, and after a brief time at ITAUTEC, I was invited to be part of the development team responsible for the personal computer line at Prologica Computadores. With his authorization, the article was translated and reproduced below. The machine has even a “fake” floppies that are actually read by the drive and tell the emulator what program to load! I’ve never seen that before! Everaldo holding his “little” CP500 – He wouldn’t be able to do that with a real one!
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Other keyword argument) is passed through to the incremental encoder. Uses an incremental encoder to iteratively encode the input provided by iterencode ( iterator, encoding, errors = 'strict', ** kwargs ) ¶ 'strict', which causes ValueError to be raised in case an encodingĮrror occurs. If file_encoding is not given, it defaults to data_encoding.Įrrors may be given to define the error handling. Bytes read from the original file are decodedĪccording to file_encoding, and the result is encoded The original file is closedĭata written to the wrapped file is decoded according to the givenĭata_encoding and then written to the original file as bytes usingįile_encoding. Return a StreamRecoder instance, a wrapped version of file EncodedFile ( file, data_encoding, file_encoding = None, errors = 'strict' ) ¶ In case a search function cannot find a given encoding, it should returnĬhanged in version 3.11: The 'U' mode has been removed. Search functions are expected to take oneĪrgument, being the encoding name in all lower case letters with hyphensĪnd spaces converted to underscores, and return a CodecInfo object. Raises a LookupError in case the encoding cannot be found.Ĭustom codecs are made available by registering a suitable codec searchįunction: codecs. Look up the codec for the given encoding and return its StreamWriter Raises a LookupError in case the encoding cannot be found. Look up the codec for the given encoding and return its StreamReader Look up the codec for the given encoding and return its incremental decoderĭoesn’t support an incremental decoder. Raises a LookupError in case the encoding cannot be found or the codecĭoesn’t support an incremental encoder. Look up the codec for the given encoding and return its incremental encoder Look up the codec for the given encoding and return its decoder function. Look up the codec for the given encoding and return its encoder function. These additional functions which use lookup() for the codec lookup: codecs. To simplify access to the various codec components, the module provides StreamWriter and StreamReader, respectively. Provide the interface defined by the base classes Stream writer and reader classes or factory functions. IncrementalEncoder and IncrementalDecoder, These have to provide the interface defined by the base classes Incremental encoder and decoder classes or factory functions. incrementalencoder ¶ incrementaldecoder ¶ The functions or methods are expected to work in a stateless mode. The encode() and decode() methods of Codec These must beįunctions or methods which have the same interface as The stateless encoding and decoding functions. The constructorĪrguments are stored in attributes of the same name: name ¶ CodecInfo ( encode, decode, streamreader = None, streamwriter = None, incrementalencoder = None, incrementaldecoder = None, name = None ) ¶Ĭodec details when looking up the codec registry. Is stored in the cache and returned to the caller. If no CodecInfo object isįound, a LookupError is raised. Looks up the codec info in the Python codec registry and returns aĮncodings are first looked up in the registry’s cache. The full details for each codec can also be looked up directly: codecs. decode ( obj, encoding = 'utf-8', errors = 'strict' ) ¶ĭecodes obj using the codec registered for encoding.ĭefault error handler is 'strict' meaning that decoding errors raise ValueError (or a more codec specific subclass, such as Theĭefault error handler is 'strict' meaning that encoding errors raise encode ( obj, encoding = 'utf-8', errors = 'strict' ) ¶Įncodes obj using the codec registered for encoding.Įrrors may be given to set the desired error handling scheme. The module defines the following functions for encoding and decoding withĪny codec: codecs. Text encodings or with codecs that encode to Types, but some module features are restricted to be used specifically with Custom codecs may encode and decode between arbitrary Most standard codecsĪre text encodings, which encode text to bytes (andĭecode bytes to text), but there are also codecs provided that encode text to Manages the codec and error handling lookup process. This module defines base classes for standard Python codecs (encoders andĭecoders) and provides access to the internal Python codec registry, which Codecs - Codec registry and base classes ¶ Check with your local retailers for their final price and availability. Prices, promotions, and availability may vary by model, store, and online. Actual features, functionality, and other product specifications may differ and are subject to change without notice. Images may be simulated and dramatized for illustrative purposes. 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