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    Why 6502 and not Z80?

    I understand that both processors were popular in the 8bit are. However z80 has much more "modern" design: 1. Rich instruction set 2. Large number of general registers 3. Index registers like ix/iy supporting modern paradigms like stack frame recursion etc. 4. Virtually unlimited stack etc. It...
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    16 bit float for Zilog Z80, anybody interested?

    Hi I was playing around with IEEE half precision floats (16 bit: 1 sign, 5 exp, 10 fraction). They are highly useful in computer graphics and neural networks. They are supported nativly by all lated GPUs from nVidia, AMD and Intel. They supported by ARM and as storage format by Intel and AMD...
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    the-8-bit-guy and iconic ZX-Spectrum (not zx80/81)

    When I start watching the 8-bit-guy as first I was surprised how little information was given on one of the most iconic microcomputers of 80th - the Sinclair ZX Spectrum. It was the machine I grew with. Watching this channel I discovered that apparently US public virtually oblivious to it. And...
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    Commodore 64 vs ZX Spectrum Performance

    There is lots of discussions about performance of Zilog Z80 vs 6502. One has higher clock/more registers but another lower cycles per operations. Recently I implemented simple program that performs machine learning for hand written digits for ZX spectrum (deep-learning/neural networks)...
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    C compiler for C-64 for linux with support of floating point math or native for Commandore

    I tried cc65 project but it does not support floating point values. I tried to use this library that supposed to use ROM functions: https://github.com/mrdudz/cc65-floatlib.git But for some reason it does not work. Where can I find a C compiler that supports floating point? Or a library for...