So I'm working on keyboard input for a very bare bones kernel that I'm throwing together, and I'm completely stuck. I can't seem to find any information online that can tell me the information I need to know. My kernel is running in protected mode right now, so I can't use the "normal" real mode keyboard routines without jumping into re...
At school we have been using a bootstrap program to run stand-alone programs without an operating system. I have been studying this program and when protected mode is enabled there is a far jump executed by directly assembling the opcode and operands as data within the program. This was for the GNU assembler: /* this code imme...
Some old x86 instructions are undefined in 64-bit mode. For instance LDS, LES and LSS, or short opcodes of the INC r16 (40 + rw) and INC r32 (40 + rd) instructions. Are there any instructions that are defined only in 64-bit mode, and not in 32-bit protected mode? Edit: The context is development of an x86 processor. I want to make s...
I am writing an IE Extension (BHO) in C#. When run in protected mode (IE's new UAC-compliant mode which forces all extensions to run at low-integrity), it fails because it cannot access user.config in the appdata folder. Is there some way to mark files are readable by lower-integrity processes? Failing that, is there some way to f...
Hi to all Could we use the Int 13h (direct disk read/write) in Windows operating systems or does the windows protected mode not allow us, and if so is there a work round? Thanks in advance. ...
I am attempting to fire up ISQL 4.10DC1 on MS-DOS 6.22, but cant seem to get PSTARTSQL.EXE to load, it says DOS16M Error[6]: Not enough memory.. I have DEVICE=C:\DOS\HIMEM.SYS as my first line in CONFIG.SYS and properly set all environment variables, including DOS16M=3. Anyone have any experience with this version of ISQL?..Does anyone h...
In a BHO running within Internet Explorer on Windows 7 with Protected Mode On, I'm trying to write to the windows event log. I'm writing to a source that already exists, and it's in the Application Log so I don't see why this would be blocked. However, my call to System.Diagnostics.EventLog.WriteEntry("MySource", "Some message") fails wi...
I have an Internet Explorer add-in, written in C#, which talks via a WCF named-pipe to a .NET desktop application. The desktop app creates the ServiceHost for the netNamedPipeBinding, and each instance of the IE add-in creates a ChannelFactory to talk to the app. Everything works fine under Windows XP, but an exception is thrown under ...