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64bit DOS sample (Announce)

posted by Japheth(R) Homepage, Germany (South), 24.07.2009, 08:57

Hello,

based on a sample supplied by sinsi + T. Grysztar in the Fasm forum I made a simple DOS 64bit sample. It's a "normal" DOS MZ exe which should be able to run on any DOS on a 64bit-capable machine. If no such machine is available, Qemu64 will do as well.

The user interface is simple: when the program starts, it switches to long-mode and waits for keys. Keys it knows are 'r', which dumps some registers, and ESC, which makes the program switch back to real-mode.

It's written in assembly, in Masm - or more exactly: in JWasm - syntax. To assemble it a 64bit aware version of JWasm is needed ( the "experimental" version )

http://www.japheth.de/Download/Dos64.zip

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MS-DOS forever!

 

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