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- mmmmoooouuuusssseeee((((7777)))) mmmmoooouuuusssseeee((((7777))))
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- mouse - mouse specifications
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- A serial mouse is used on the SGI 4D series, Indigo, Crimson and Onyx
- systems. This mouse differs from other systems which use the mouse
- described in _p_c_m_o_u_s_e(7).
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- SSSSiiiiggggnnnnaaaallllssss
- The serial data interface signal level is compatible with RS-423, which
- has roughly a 10V swing centered about ground. The idle state and true
- data bits for the interface are Mark level or -5V whereas false data bits
- and the start bit are spaces or +5V. The serial data is transmitted at
- 4800 baud with one start bit, eight data bits, and no parity.
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- PPPPrrrroooottttooooccccoooollll
- The mouse provides a five-byte data block whenever there is a change of
- position or button state. The first byte is a sync byte that has its
- upper five bits set to 10000 and its lower three bits indicating the
- button states where a 0 indicates depression. The sync byte looks like
- this: 10000LMR. The next four bytes contain two difference updates of
- the mouse's change in position: X1, Y1, X2, and Y2. Positive values
- indicate movement to the right or upward. System software ignores bytes
- beyond the first five until reception of the next sync byte.
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- PPPPiiiinnnnoooouuuutttt
- The pinout of the mouse connector on the keyboard is on the _k_e_y_b_o_a_r_d(7)
- reference page.
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- NNNNOOOOTTTTEEEE
- Indy, Indigo2, O2, OCTANE and Onyx2 use a PS/2 style mouse, which is
- described in _p_c_m_o_u_s_e(7).
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- keyboard(7), pckeyboard(7), pcmouse(7).
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- PPPPaaaaggggeeee 1111
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