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On Time RTOS-32 Documentation

Welcome

RTTarget-32

RTTarget-32 Programming Manual

Introduction

Running Win32 Programs without Win32

The i386 Microprocessor

Real Address Mode

Virtual 8086 Mode

Protected Mode

RTLoc: Locating a Program

Running a Program on the Target

Cross Debugging

Using an IDE

The RTTarget-32 API

Demo Programs

Advanced Topics

Compiling and Linking with On Time RTOS-32

Redistributable Components of RTTarget-32

RTLoc Error Messages

RTTarget-32 Reference Manual

RTKernel-32

RTFiles-32

RTIP-32

RTPEG-32

RTUSB-32
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Virtual 8086 Mode

Virtual 8086 mode emulates the real address mode. However, some protected mode features of the 386 are in effect. For example, paging is enabled to allow the virtual 8086 machine to run anywhere in the physical address space. The IDT is also in effect to route all interrupts to native protected mode. The GDT and LDT are not used. Address calculation works just as in real mode; however, instead of physical addresses, linear addresses subject to paging are generated by combining segment and offset values.

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UpReal Address Mode

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