![]() ![]() If the virtual machine is configured with a parallel port, most guest operating systems automatically detect it at installation time and install the required drivers. ![]() For this reason, not all devices that attach to the parallel port are guaranteed to work correctly. Also, the guest operating system cannot use DMA (direct memory access) to move data to or from the port. Specifically, interrupts requested by a device connected to the physical port are not passed to the virtual machine. Parallel ports are used by a variety of devices, including printers, scanners, dongles and disk drives.Ĭurrently, VMware Workstation provides only partial emulation of PS/2 hardware. This limitation exists because CONFIG_PARPORT_PC does not correctly export its symbols. VMware Workstation is unable to use parallel port devices if CONFIG_PARPORT_PC is built directly (compiled) into the kernel. On Linux hosts, VMware Workstation requires that the parallel port "PC-style hardware" option (CONFIG_PARPORT_PC) be built and loaded as a kernel module (that is, it must be set to "m"). VMware Workstation supports a partial emulation of bidirectional PS/2-style ports.
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