hardware

来源： https://stackoverflow.com/questions/61983050/accessing-epass2003-auto-token-through-browser

问题 I've been learning assembly language recently, and I already know how to use the in/out command. But I have some questions: where did the port addresses come from, like 0x70. How do I know how many ports my computer has and the addresses of them. I've checked the Intel developer's manual, but I can't find the answer. Thank you for your attention 回答1: There's a maximum of 65536 IO ports, and most aren't used. The IO ports that are used on a modern PC can be split into 2 categories: PCI devices

问题 I've been learning assembly language recently, and I already know how to use the in/out command. But I have some questions: where did the port addresses come from, like 0x70. How do I know how many ports my computer has and the addresses of them. I've checked the Intel developer's manual, but I can't find the answer. Thank you for your attention 回答1: There's a maximum of 65536 IO ports, and most aren't used. The IO ports that are used on a modern PC can be split into 2 categories: PCI devices

问题 Is there a setting for the canvas context that will prevent its renderer from using hardware acceleration? I want to render without it, but don't want to ask the user to disable it from their chrome browser since that is counter-intuitive and doesn't provide a seamless workflow experience. 回答1: Short Answer: No, but it is at least being considered by those developing Chromium. MDN: CanvasContext2D In the page you'll find an internal method called demote . Long Answer: There's nothing

问题 Is there a setting for the canvas context that will prevent its renderer from using hardware acceleration? I want to render without it, but don't want to ask the user to disable it from their chrome browser since that is counter-intuitive and doesn't provide a seamless workflow experience. 回答1: Short Answer: No, but it is at least being considered by those developing Chromium. MDN: CanvasContext2D In the page you'll find an internal method called demote . Long Answer: There's nothing

问题 How system memory (RAM) is mapped for GPU access? I am clear about how virtual memory works for cpu but am not sure how would that work when GPU accesses GPU-mapped system memory (host). Basically something related to how Data is copied from system-memory to host-memory and vice versa. Can you provide explanations backed by reference articles please? 回答1: I found the following slideset quite useful: http://developer.amd.com/afds/assets/presentations/1004_final.pdf MEMORY SYSTEM ON FUSION APUS

问题 How system memory (RAM) is mapped for GPU access? I am clear about how virtual memory works for cpu but am not sure how would that work when GPU accesses GPU-mapped system memory (host). Basically something related to how Data is copied from system-memory to host-memory and vice versa. Can you provide explanations backed by reference articles please? 回答1: I found the following slideset quite useful: http://developer.amd.com/afds/assets/presentations/1004_final.pdf MEMORY SYSTEM ON FUSION APUS

问题 Is there a Win32 API call that detects the current Hardware Acceleration level of a user's system? I have no need to change the setting, but I'd like to scale back the level of detail for my OpenGL display if hardware acceleration is disabled. 回答1: From the FAQ: How do I know my program is using hardware acceleration on a Wintel card? If you are using the Win32 interface (as opposed to GLUT), call DescribePixelFormat() and check the returned dwFlags bitfield. If PFD_GENERIC_ACCELERATED is

问题 I have a process that requires me to identify different machines, and I'm not sure what's the best way to do it. I do not want to save that ID on a text file or something, but I want to generate it from hardware every time I need it (in case the text with the ID gets deleted or something) I've checked UUID, and it seems ok but I'm not sure. I've taken a look at uuid.getNode() , but I have 2 problems with it: One part says "If all attempts to obtain the hardware address fail, we choose a

问题 I have a process that requires me to identify different machines, and I'm not sure what's the best way to do it. I do not want to save that ID on a text file or something, but I want to generate it from hardware every time I need it (in case the text with the ID gets deleted or something) I've checked UUID, and it seems ok but I'm not sure. I've taken a look at uuid.getNode() , but I have 2 problems with it: One part says "If all attempts to obtain the hardware address fail, we choose a