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HP started designing handhelded calculators from 1968 until the end of ‘80. I buyed an HP-42S around 1993 but it has been designed near 1986.
Here I want to focus on the chip design of the 10C series, a compact set of calculator with programming abilities but with full numeric display. The HP-15C was introduced in 1982, in the full 8bit computer era, the same year of the C/64. Later model will feature a more mature “Saturn” processor. I will describe here this chip at the best of my abilities, because it sheds a light on how custom architecture was done around end of 1979.
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Do you STILL love taking notes by hand? I have created different types of composition notebook, even retro-style one, inspired by MOS6502, with Sprite Editor sheets, and some nice goodies. Give them a try!
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Do you STILL love taking notes by hand? I have created different types of composition notebook, even retro-style one, inspired by MOS6502, with Sprite Editor sheets, and some nice goodies. Give them a try!
Below a selection of screenshot from my composition notebook, called The Retro Notebook: you can click on the image below to get a larger one.
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Due to COVID19 pandemic, I and my family was forced in our home. So I revamped my 8bit computer book, with a new look and a nice search engine.
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Quick Basic64 is a QBasic compatible programming language actively mantained.
It produce C-compiled code and works under Linux and MacOS too. It resemble the original QBasic IDE, and supports its dialect.
If you have some old qbasic code to "update", QB64 is your best friend:Give it a try!
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I’d like to point you to this blog article about “cycle stepped” 6502 emulator. It is well described and can be a neat read for xmas vacation.
Also author’s main project is all about
A toolbox of 8-bit chip-emulators, helper code and complete embeddable system emulators in dependency-free C headers (a subset of C99 that compiles on gcc, clang and cl.exe).
which can inspire you new project to integrate!Do not forget to take a look also at my 8bit free book.
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Some time ago I mentioned the Pyc64 project, a “differently emulated” C/64.
There’s a much more ambitious project that’s going under pressure, it’s called Commander X 16.
Commander X 16 has been started by David Murray and three other guys.David’s desire was to create an 8-bit computer similar to the C/64 but a little more comfortable to use: for example with 80 columns, but not with too much computing power, so as not to distort its “retro” nature.
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Hi all!
I decided to write a book called “8-Bit Computers: Retro computer history in the ‘80”.
It is my first book on this topic, so I need you comments & advices!
A small extract is right here for download.You will be able to buy the Kindle edition for little as € 0,99 by the end of June.
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