maplefoki.blogg.se - Difference between bochs and virtualbox

DIFFERENCE BETWEEN BOCHS AND VIRTUALBOX FULL
DIFFERENCE BETWEEN BOCHS AND VIRTUALBOX ISO
DIFFERENCE BETWEEN BOCHS AND VIRTUALBOX FREE

Standard gdb commands work in this mode (e.g. Vmx| W110: Debug stub: VMware Workstation is listening for debug connection on port 8833. The actual port can always be located by looking at the latest "Debug stub" entry in the vmware.log file: Note that some versions of VMWare contain a bug: after you disconnect GDB from port 8832, VMWare will actually continue listening on port 88. Start a GDB session (using a copy of your kernel that includes debug information), then: If using these options, Workstation prints a message "VMware Workstation is listening for debug connection on port 8832." into the vmware.log file. These options are valid in Workstation 6.0+, and should be set in the virtual machine's. The new versions of VMware Player (from 3.0 up) are able to create new virtual machines.

DIFFERENCE BETWEEN BOCHS AND VIRTUALBOX FREE

NOTE: VMware Player is totally free for use, and has smaller size than VMware Workstation.

Useful feature: record-replay (though difficult to use), which might be helpful for reproducing race conditions. Useful feature: gdb-based guest debug stub support.

Server and Player are free, which is a perk go for Server.

Supports SMP, if you are writing a multiprocessor kernel. But in reality, go for something more modern. Marginally more useful: a buggy guest operating system traces useful error messages. Error codes are designed for reporting to VMware, and there are no developer-centric features.

Apparently, the VMWare format for disks is popular because several emulators support it.VMware's usefulness for hobbyists depends on the code's generation.

They start small when the emulated disk is empty and expand as more data is written.

Growing images are similar to sparse images.

Journaling images keep track of changes made by each session, and they can be undone/redone in order.

Useful if you want to remove any changes to a "good" disk.

Any changes are stored in a new image that is layered on top. Stackable images allow a "base" read-only image.A sparse image does not store blank space, so you could emulate a 1 GB hard disk, but it would only take up 200 MB of space if it had 800 MB free space.The concatenated format allows several separate files to emulate one combined hard disk useful for partitions.

DIFFERENCE BETWEEN BOCHS AND VIRTUALBOX FULL

A flat image offers no special features and takes up the full amount of disk space that it emulates.

DIFFERENCE BETWEEN BOCHS AND VIRTUALBOX ISO

The emulators usually support only a flat image for a floppy and an ISO image file for CD-ROMs. This chart shows the file formats for an emulated hard disk. VBE, OpenGL virtualization, VGA (decent), BGA, VBoxVideo VBE, VGA (partial), Cirrus Logic GD54xx, (BGA?) VBE, VGA (partial), BGA, Cirrus Logic GD54xx Yes: ARM, SPARC, MIPS, MIPS64, m68k, PowerPC Maybe (yes for PowerPCs, no for Intel Macs) It can't hurt to use more than one emulator (or several), in order to test your OS on a variety of platforms without using real hardware. This comparison is just to point out their differences. None of them are necessarily "better" than the others. Bochs is by far the slowest, but that is because of its full emulation, which gives it the highest accuracy. Overall, VirtualBox offers the richest set of features, along with very fast performance. Virtualization, Emulation on legacy devices Web interface, non-free Windows client (VI3) Virtualization (on PC), Emulation (on Mac) Command line, script file, interactive menus