Linked by Thom Holwerda on Sun 16th Sep 2007 20:39 UTC, submitted by M-Saunders
OSNews, Generic OSes MikeOS 1.0 has been released. It is an open source PC operating system, designed as a tutor for basic OS design and x86 assembly language. "MikeOS is a 16-bit operating system for x86 PCs, written in assembly language, which boots from a floppy disk or CD-ROM. It features a text-based dialog-driven user interface, a command-line, support for FAT12 (DOS) floppies and PC speaker sound. It can load external programs and has over 30 system calls. Basic DOS .COM program support is also included." This version includes a complete Handbook with a whole section on writing your own OS.
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RE: No 8088, sniff ...
by edwdig on Mon 17th Sep 2007 18:56 UTC in reply to "No 8088, sniff ..."
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80186 systems are rare. They were mainly used in embedded systems.

I'm sure there's more, but the only difference I've come across between an 8086 and an 80186 was in the bit shift instructions. The 8086 could only shift one bit at a time, whereas the 80186 introduced the two operand version allowing you to specify the numbers of bits to shift.

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