{"id":3216,"date":"2025-04-17T10:08:35","date_gmt":"2025-04-17T10:08:35","guid":{"rendered":"https:\/\/webprojects.cloud\/wordpress\/splatco\/?post_type=spl_knowledgebase&#038;p=3216"},"modified":"2025-06-10T07:39:25","modified_gmt":"2025-06-10T07:39:25","slug":"splat-pc-onboard-quadrature-counter-obqc-support","status":"publish","type":"spl_knowledgebase","link":"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/splat-pc-programming-software\/splat-pc-onboard-quadrature-counter-obqc-support\/","title":{"rendered":"SPLat\/PC: Onboard quadrature counter (OBQC) support"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"201\" height=\"109\" src=\"https:\/\/webprojects.cloud\/wordpress\/splatco\/wp-content\/uploads\/2025\/04\/SPLatPC.gif\" alt=\"\" class=\"wp-image-3218\"\/><\/figure>\n\n\n\n<p>SPLat\/PC for dialects 16 or later (e.g. 7.<em>16<\/em>.0) supports the onboard quadrature counter with a special simulation window. You show this window with the menu selection Window&gt;OBQC.<\/p>\n\n\n\n<p>The window allows you to dial in a count rate up to 3kHz (realistic for 8-bit controllers such as the CC18, although 300kHz is more realistic for 32-bit controllers such as the DC216 and DT16), and have the counter count up or down or stop. When stopped you can also type a preset number of counts into the counter (green numbers). You will be prevented from entering invalid numbers.<\/p>\n\n\n\n<p>When the counter is counting, it does so at a simulated rate that assumes each instruction simulated by SPLat\/PC is taking 50 microseconds. That is a reasonable average figure for older (8-bit) SPLat controllers such as SL99, MS12 and MMi20x. (On 32-bit boards, the counting is done in hardware and is much faster.)<\/p>\n\n\n\n<p>The simulator is not able to recognize and quadrature count actual hardware inputs during development mode, i.e when connected to a board.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SPLat\/PC for dialects 16 or later (e.g. 7.16.0) supports the onboard quadrature counter with a special simulation window. 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