DSP Registers: Difference between revisions

Line 92:

3-4 Unused

5 Read FIFO Full Flag (0=No, 1=Yes)

6 Read FIFO Not-Empty Flag (0=No, 1=Yes) ;~~ARM9~~ may read DSP_PDATA

6 Read FIFO Not-Empty Flag (0=No, 1=Yes) ;ARM11 may read DSP_PDATA

7 Write FIFO Full Flag (0=No, 1=Yes)

8 Write FIFO Empty Flag (0=No, 1=Yes)

Line 104:

Unknown if/when bit10-15 get reset... maybe after reading the status?

=== DSP_PSEM - ~~ARM9~~-to-DSP Semaphore (16bit) ===

=== DSP_PSEM - ARM11-to-DSP Semaphore (16bit) ===

0-15 DSP-to-~~ARM9~~ Semaphore 0..15 Flags (0=Off, 1=On)

0-15 DSP-to-ARM11 Semaphore 0..15 Flags (0=Off, 1=On)

Reportedly these flags are sent in ~~ARM9~~-to-DSP direction.

Reportedly these flags are sent in ARM11-to-DSP direction.

Confusingly, the other DSP_Pxxx registers are for opposite direction?

=== DSP_PMASK - DSP-to-~~ARM9~~ Semaphore Mask (16bit) ===

=== DSP_PMASK - DSP-to-ARM11 Semaphore Mask (16bit) ===

0-15 DSP-to-~~ARM9~~ Semaphore 0..15 Interrupt Disable (0=Enable, 1=Disable)

0-15 DSP-to-ARM11 Semaphore 0..15 Interrupt Disable (0=Enable, 1=Disable)

=== DSP_PCLEAR - DSP-to-~~ARM9~~ Semaphore Clear (W) (16bit) ===

=== DSP_PCLEAR - DSP-to-ARM11 Semaphore Clear (W) (16bit) ===

0-15 DSP-to-~~ARM9~~ Semaphore 0..15 Clear (0=No Change, 1=Clear)

0-15 DSP-to-ARM11 Semaphore 0..15 Clear (0=No Change, 1=Clear)

Reportedly clears bits in DSP_PSEM~~/4004310h~~. [that's probably nonsense, clearing bits in DSP_SEM~~/400431Ch~~ would make more sense]

Reportedly clears bits in DSP_PSEM. [that's probably nonsense, clearing bits in DSP_SEM would make more sense]

=== DSP_SEM - DSP-to-ARM9 Semaphore Data (R) (16bit) ===

0-15 DSP-to-~~ARM9~~ Semaphore 0..15 Flags (0=Off, 1=On)

0-15 DSP-to-ARM11 Semaphore 0..15 Flags (0=Off, 1=On)

Reportedly these flags are received in DSP-to-~~ARM9~~ direction.

Reportedly these flags are received in DSP-to-ARM11 direction.

=== DSP_CMDX - DSP Command Reg. X (R/W) (~~ARM9~~ to DSP) (16bit) ===

=== DSP_CMDX - DSP Command Reg. X (R/W) (ARM11 to DSP) (16bit) ===

0-15 Command/Data to DSP

=== DSP_REPX - DSP Reply Register X (R) (DSP to ARM9) (16bit) ===

0-15 Reply/Data from DSP

@@ Line 92: / Line 92: @@
 -4   Unused
      Read FIFO Full Flag      (0=No, 1=Yes)
-     Read FIFO Not-Empty Flag (0=No, 1=Yes) ;ARM9 may read DSP_PDATA
+     Read FIFO Not-Empty Flag (0=No, 1=Yes) ;ARM11 may read DSP_PDATA
      Write FIFO Full Flag     (0=No, 1=Yes)
      Write FIFO Empty Flag    (0=No, 1=Yes)
@@ Line 104: / Line 104: @@
 Unknown if/when bit10-15 get reset... maybe after reading the status?
-=== DSP_PSEM - ARM9-to-DSP Semaphore        (16bit) ===
+=== DSP_PSEM - ARM11-to-DSP Semaphore        (16bit) ===
--15  DSP-to-ARM9 Semaphore 0..15 Flags (0=Off, 1=On)
+-15  DSP-to-ARM11 Semaphore 0..15 Flags (0=Off, 1=On)
-Reportedly these flags are sent in ARM9-to-DSP direction.
+Reportedly these flags are sent in ARM11-to-DSP direction.
 Confusingly, the other DSP_Pxxx registers are for opposite direction?
-=== DSP_PMASK - DSP-to-ARM9 Semaphore Mask (16bit) ===
+=== DSP_PMASK - DSP-to-ARM11 Semaphore Mask (16bit) ===
--15  DSP-to-ARM9 Semaphore 0..15 Interrupt Disable (0=Enable, 1=Disable)
+-15  DSP-to-ARM11 Semaphore 0..15 Interrupt Disable (0=Enable, 1=Disable)
-=== DSP_PCLEAR - DSP-to-ARM9 Semaphore Clear (W) (16bit) ===
+=== DSP_PCLEAR - DSP-to-ARM11 Semaphore Clear (W) (16bit) ===
--15  DSP-to-ARM9 Semaphore 0..15 Clear (0=No Change, 1=Clear)
+-15  DSP-to-ARM11 Semaphore 0..15 Clear (0=No Change, 1=Clear)
-Reportedly clears bits in DSP_PSEM/4004310h. [that's probably nonsense, clearing bits in DSP_SEM/400431Ch would make more sense]
+Reportedly clears bits in DSP_PSEM. [that's probably nonsense, clearing bits in DSP_SEM would make more sense]
 === DSP_SEM - DSP-to-ARM9 Semaphore Data (R) (16bit) ===
--15  DSP-to-ARM9 Semaphore 0..15 Flags (0=Off, 1=On)
+-15  DSP-to-ARM11 Semaphore 0..15 Flags (0=Off, 1=On)
-Reportedly these flags are received in DSP-to-ARM9 direction.
+Reportedly these flags are received in DSP-to-ARM11 direction.
-=== DSP_CMDX - DSP Command Reg. X (R/W) (ARM9 to DSP) (16bit) ===
+=== DSP_CMDX - DSP Command Reg. X (R/W) (ARM11 to DSP) (16bit) ===
 -15  Command/Data to DSP
 === DSP_REPX - DSP Reply Register X (R) (DSP to ARM9) (16bit) ===
 -15  Reply/Data from DSP