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They had hardware working, but never finished.Ħ5m32, a 65-oriented 32-bit processor concept from Michael Barry.
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Apparently it was designed for Apple to make a 32-bit 65-based homne computer, which never happened.Ħ5Org32 developments of ideas for an all-32-bit 65816 extension (forum topic)Ħ5GZ032, a 6502-compatible 32-bit VHDL core from Gideon Zweijtzer and his team. For a brief summary and forum discussion, see the forum topic.Ħ5832, from WDC (.pdf) Never made, but intended to be a 32-bit successor to the 65816. (.pdf) Never made, but intended to be a powerful high-level 32-bit successor to the 6502, and a good compiler target, and run multiple protected Instructions to operate on the ZP address pointed to by X instead, without affecting A! It makes it like having 257 accumulators. Of special interest are the instructionsĭirectly involved with memory mapping and moving, and a T flag, which when set (using SET), causes accumulator (with all the modern CMOS instructions minus STP and WAI), with a memory management unit (MMU).
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HuC6280, a PC Engine using a special version of the 65c02 " Notes on reverse-engineering the 65ce02"Ħ516 (Synertek) 16-bit pseudo-6502 for Atari 400/800 computers, never made it to market Regarding the reverse-engineering and high-resolution die images of the 65CE02 in the forum topic
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The 65816 microprocessor: Common Misunderstandings, Plus AttractionsĦ5CE02 improvements over the 65c02 Original Commodore 65CE02ĭata sheet is here (.pdf) See also the many links Ed Spittles provides Has great strengths that don't initially meet the eye! others' 6502 web pages (definitely non-trivial!)Ħ5-family processors, history, HDL, emulators (which are hardware): Why use the 6502? (2-page forum topic, with links to more) It.for individual computer brands (Acorn/BBC, AIM-65, Apple II & III, Atari, Commodore, others).65 software: math (including coprocessors), algorithms, simulators, OSs, programming languages,.65-family processors, history, HDL, emulators (which are hardware).List of 90 of just my own articles, on this site and others (and other major features are planned, plus several smaller ones, but it all takes so much time!) 6502 PRIMER: Building your own 6502 computer (Many of the 22 chaptersĪpply equally to other computers as well.) Added 4/27/12.(Notice I did not say "fixed-point" which is a limited subset of scaled-integer.) Added 6/25/12. Plus: The unexpected power of scaled-integer You can probably implement them even if your computer is already built up, the address space is full,Īnd your I/O is almost all taken. Large look-up tables for hyperfast, accurate 16-Bit scaled-integer math, including trig &.Languages without robbing any of the efficiency or control of assembly. program structures in 65c02 assembly, through macros, yielding benefits of higher-level.Multitasking OS, or where hard realtime requirements might rule one out anyway. simple methods for multitasking without a multitasking OS, for systems that lack the resources for a.One has a load of teensy improvements (as it's so much easier to edit on my own site). On 12 years earlier, and it will remain there too but this (and will remain there), but copied it to here partly for ease of editing, on 2/21/15. Published in the Jul/Aug 1994 issue of Forth Dimensions magazine, V16N2, then revised it Dec 2003 zero-overhead forth interrupt service on 6502, which I got.Assembly Language: Still Relevant Today (article) Added 6/9/15.6502 stacks treatise 6502 Stacks: More than you thought! This isĪctually a set of 19 articles plus appendices.