Trackball: Difference between revisions
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Sort of an upside-down mechanical mouse, uses two optical encoders handled by the [[SIT board]]. | Sort of an upside-down mechanical mouse, uses two optical encoders handled by the [[SIT board]]. | ||
Special [[ | Special [[System ROM]]: 236-bios.sp1. X counter in {{Reg|REG_P1CNT}} when bit 0 of {{Reg|REG_POUTPUT}} is 0, otherwise Y counter. | ||
Refreshed every vblank unconditionnaly by this | Refreshed every vblank unconditionnaly by this System ROM. | ||
[[Category:Cartridge systems]] | [[Category:Cartridge systems]] | ||
Revision as of 09:26, 23 November 2015
Controller type used only by The Irritating Maze.
Sort of an upside-down mechanical mouse, uses two optical encoders handled by the SIT board.
Special System ROM: 236-bios.sp1. X counter in REG_P1CNT when bit 0 of REG_POUTPUT is 0, otherwise Y counter. Refreshed every vblank unconditionnaly by this System ROM.