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389 bytes added ,  14:35, 7 May 2020
Line 277: Line 277:  
| Framebuffer format
 
| Framebuffer format
 
| Bit0-15: framebuffer format, bit16-31: unknown
 
| Bit0-15: framebuffer format, bit16-31: unknown
 +
|-
 +
| 0x74
 +
| PDC control
 +
| Bit 0: Enable display controller.
 +
Bit 8: H(Blank?) IRQ mask (0 = enabled).
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Bit 9: VBlank IRQ mask (0 = enabled).
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Bit 10: Error IRQ mask? (0 = enabled).
 +
Bit 16: Output enable?
 
|-
 
|-
 
| 0x78
 
| 0x78
| Framebuffer select
+
| Framebuffer select and status
| Bit0: which framebuffer to display, bit1-7: unknown
+
| Bit 0: Next framebuffer to display (after VBlank).
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Bit 4: Currently displaying framebuffer?
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Bit 8: Reset FIFO?
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Bit 16: H(Blank?) IRQ status/ack. Write 1 to aknowledge.
 +
Bit 17: VBlank IRQ status/ack.
 +
Bit 18: Error IRQ status/ack?
 
|-
 
|-
 
| 0x80
 
| 0x80
137

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