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> > I *finally* got X windows running on my TP755CX's LCD in 800x600 mode! I > was beginning to think it wasn't possible... Anyway, the magical missing > piece I needed was to run "PS2 MODE3X ON" under DOS (to apparently > install video mode 3 extensions), then boot into Linux using > LOADLIN.EXE. Then my XF86config worked the first time (I posted the > modeline in a previous message). Now, I'd like to run a pure Linux > machine without DOS, so I decided to write a C program for Linux to > perform the same function as "PS2 MODE3X ON". I tried to disassemble the > PS2.EXE program under DOS using the latest version of Sourcer, but > Sourcer says that PS2.EXE is a "modified Windows NE executable format", > and refused to touch it. Next, I fired up Turbo Debugger to try and step > through it, but Turbo Debugger complained that it was an "unsupported > executable format". So my question is this: Does anyone know how the > MODE3X function works internally? Is it something that's a documented > part of the Western Digital chip? Or does the PS2 program simply enable a > different BIOS INT 10H handler? (OK, so it was three questions :-) If > anyone can help me with this, I would greatly appreciate it. I also > intend to release the completed program to the Linux/Thinkpad community > at large (assuming I don't have to sign an NDA with IBM to get the > information!) > Hi John, Concerning the need to go back to DOS to run the PS2.exe command, I have had a similar experience trying to run X in 800x600 or 1024x768 on the external display (with my TP360CSE). Notice that the same it also true if you try to run Windows at these resolutions. I came to the same conclusion as you. It would be great if we could get an equivalent of the PS2.exe command under Linux. Desperatly, I am not a expert in assembly language and so I could not really help you there. But I hope there is another way to get the information about this mysterious command so as we can port it to another OS. Anyway, I actually do support your initiative. -------------------------------------------------------------------- St'ephane ERANIAN | Email eranian@chorus.fr Universit'e PARIS VII | eranian@litp.ibp.fr LITP - Laboratoire d'Informatique | Th'eorique et Programmation | 2 place Jussieu | 75251 Paris cedex 05 | --------------------------------------------------------------------