| [Overview][Constants][Types][Procedures and functions][Variables] | Reference for unit 'go32' (#rtl) |
GO32 - acces to the 32-bit DOS extender
This document describes the GO32 unit for the Free Pascal compiler under dos. It was donated by Thomas Schatzl (tom_at_work@geocities.com), for which my thanks. This unit was first written for dos by Florian Klaempfl.
Only the GO32V2 DPMI mode is discussed by me here due to the fact that new applications shouldn't be created with the older GO32V1 model. The go32v2 version is much more advanced and better. Additionally a lot of functions only work in DPMI mode anyway. I hope the following explanations and introductions aren't too confusing at all. If you notice an error or bug send it to the FPC mailing list or directly to me. So let's get started and happy and error free coding I wish you.... Thomas Schatzl, 25. August 1998
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Real mode callbacks |
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Executing software interrupts |
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Software interrupts |
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Hardware interrupts |
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Disabling interrupts |
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Creating your own interrupt handlers |
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Protected mode interrupts vs. Real mode interrupts |
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Handling interrupts with DPMI |
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Interrupt redirection |
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Processor access |
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I/O port access |
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dos memory access |
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FPC specialities |
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Selectors and descriptors |
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What is DPMI |
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