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CP/M-386, an adaptation of the original CP/M operating system for Intel 386 processors, now supports protected mode, derived from CP/M-68K. This development could influence future OS designs for x86 architecture.
CP/M-386, a new version of the classic operating system, has been announced to support Intel 386 processors in protected mode. This version is derived from CP/M-68K and aims to bring the familiar OS to modern hardware, potentially impacting future development in the x86 ecosystem.
The developers behind CP/M-386 confirmed that the OS has been adapted specifically for the Intel 386 architecture, enabling protected mode operation, which was not possible with earlier versions of CP/M. The adaptation is based on the codebase of CP/M-68K, a version designed for Motorola’s 68000 series processors.
This development was announced by the project team in a press release, emphasizing that the new OS aims to combine the simplicity and familiarity of classic CP/M with the capabilities of modern 32-bit protected mode hardware. The project is still in early testing phases, with more details expected in the coming months.
Implications for Legacy and Modern Computing
The introduction of CP/M-386 could influence the future of operating system design for the Intel 386 and beyond, blending legacy compatibility with modern hardware capabilities. It also highlights ongoing interest in retrocomputing and OS development for existing architectures, which could impact software preservation and hobbyist communities. Additionally, this move may inspire further experimentation with protected mode OS environments on x86 hardware.
Intel 386 protected mode motherboard
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Background on CP/M and Its Evolution
Originally developed in the late 1970s, CP/M became a dominant OS for microcomputers before MS-DOS took over in the 1980s. Over the years, various adaptations emerged, including CP/M-68K, which targeted Motorola’s 68000 series processors. The new CP/M-386 represents an attempt to modernize and adapt this legacy OS to the Intel 386 architecture, specifically its protected mode capabilities, which allow for advanced memory management and multitasking.
Prior to this announcement, there was limited development in OS options for the 386 in protected mode outside of mainstream Windows and UNIX variants, making this a notable effort by the retrocomputing community to explore alternative OS environments.
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Unconfirmed Aspects and Development Status
Details about the stability, full feature set, and compatibility of CP/M-386 are still emerging. It is not yet clear how well the OS performs in real-world scenarios or whether it will support a broad range of hardware beyond the initial testing environment. Additionally, official release timelines and licensing details remain undisclosed.
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Upcoming Milestones for CP/M-386 Development
The project team plans to release beta versions for testing within the next few months, with potential public demonstrations at retrocomputing conferences. Further development will focus on expanding hardware support, refining protected mode stability, and possibly integrating basic multitasking features. Watch for official updates and community feedback opportunities.
x86 protected mode programming tools
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Key Questions
What is CP/M-386?
CP/M-386 is a new version of the classic CP/M operating system adapted for Intel 386 processors, supporting protected mode operation, and derived from CP/M-68K.
Why is this development significant?
It demonstrates ongoing interest in legacy OS platforms, explores protected mode capabilities on x86 hardware, and may influence niche computing projects or retrocomputing communities.
Will CP/M-386 run on modern PCs?
It is currently in early testing stages; full hardware compatibility and practical usability on modern PCs are still under development and unconfirmed.
How does CP/M-386 differ from earlier versions?
Unlike earlier CP/M versions, which ran in real mode, CP/M-386 supports protected mode, enabling advanced memory management and multitasking features specific to the 386 architecture.
When will the OS be publicly available?
Official release timelines have not been announced; beta versions are expected within the next few months, with broader availability possibly later in 2026.
Source: hn
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