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shadow ram การใช้

ประโยคมือถือ
  • The video game Firetrack would also use double buffering if shadow RAM was present.
  • The memory interface of shadow RAM to be implemented by copying ROM contents into RAM.
  • Shadow RAM is activated by setting the most-significant bit of the memory mode number.
  • For example, some hardware may be inaccessible to the operating system if shadow RAM is used.
  • On the BBC Micro version, it automatically detects shadow RAM is present, the graphics are double buffered.
  • When the framebuffer is running from Shadow RAM, the memory normally used for video is free for program use.
  • For example, to use mode 1 with shadow RAM enabled, request mode 129 ( 128 + 1 ).
  • Shadow RAM is a 20 KB block of RAM that sits outside of the real address space, accessed via operating system calls.
  • Ember is golden, and has a resonant baritone voice, whereas Umber is dark grey, also known as the Shadow Ram, and has a higher, tenor voice.
  • InterWord could not use the extra-low-memory teletext mode except for its main menu, and recommended that the machine have Shadow RAM ( like the BBC Master ) so that screen memory would not be an issue.
  • Shadow RAM was fitted as standard on the " Model B + " BBC Micro and on the BBC Master series, but was an optional, third-party extra feature on the " Model A " and " Model B " BBC Micro systems.