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Cool to hear That reminds me, has anyone tried 3D polygons on the Prizm yet? A demo would be nice.
At first the outer gate has to be opened:Set bit 3 of port 0xA4050162 to output mode, t. i. set control register 0xA4050142 accordingly. Set bit 3 and bit 2 of port 0xA4050162. Do not ask why bit 2 has to be set, too. I do not know.How to control the output of the serial transmit pin:Set bit 2 of port 0xA4050130 to output mode, t. i. set control register 0xA4050110 accordingly. Set or clear bit 2 of port 0xA4050130 to control the serial transmit pin state. How to read the state of the serial receive pin:Set bit 3 of port 0xA4050130 to input mode, t. i. set control register 0xA4050110 accordingly. Read port 0xA4050130 and isolate bit 3 to obtain the serial receive pin state.
A mini-Prizm-SDK (version 1.08).New with version 1.08:Insight: direct access of the serial I/O-pins (measured a 17 kHz symmetric and sharp edged square wave with my scope, though higher frequencies are possible).BTW: I went through a world of hurt, hunting this down!