834
edits
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added info about power and reset buttons
Line 75:
Line 75:
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||x'0d80_0014|| alarm (interrupt 0 is fired when the timer reaches this value)
||x'0d80_0014|| alarm (interrupt 0 is fired when the timer reaches this value)
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+||x'0d80_0030|| something related to interrupts; typical value is 0x854da94f. Pressing the RESET button will set the 0x20000 bit.
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||x'0d80_0034||???
||x'0d80_0034||???
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−||x'0d80_0038||active interrupts (write 1 to clear)
+||x'0d80_0038||active interrupts (write 1 to clear). Pressing the RESET button will set the 0x20000 bit (interrupt 18). Pressing the POWER button will set the 0x800 bit (interrupt 11).
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||x'0d80_003C||enabled interrupts|| || || clear 0x40000 for legacy di
||x'0d80_003C||enabled interrupts|| || || clear 0x40000 for legacy di
Line 98:
Line 100:
||x'0d80_00E2||GPIO || || || debug / "POST" port -- connected to 8 testpads. boot0 / 1 / 2 output simple codes to indicate boot status.
||x'0d80_00E2||GPIO || || || debug / "POST" port -- connected to 8 testpads. boot0 / 1 / 2 output simple codes to indicate boot status.
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−||x'0d80_00E0||GPIO || || ||
+||x'0d80_00E3||GPIO || || ||
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||x'0d80_00E4||GPIO || || || probably direction
||x'0d80_00E4||GPIO || || || probably direction
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||x'0d80_00EC||???
||x'0d80_00EC||???
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+||x'0d80_00F0|| ? typical value is 0x0070fff6; pressing the POWER button will set the 0x1 bit
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||x'0d80_00F4||???
||x'0d80_00F4||???