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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!
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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.
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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.
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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.
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