APU register table/DSP global: Difference between revisions

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m (Update links to the renamed S-DSP registers page)
(Rename the FIR S-DSP registers to FIRx (the name used in ares). Cx and FFCx look like addresses.)
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| Echo delay time (D).
| Echo delay time (D).
|-
|-
! [[S-DSP registers#FIR|C0]]
! [[S-DSP registers#FIR|FIR0]]
!
! C0
! $0F
! $0F
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
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| Echo filter coefficient.
| Echo filter coefficient.
|-
|-
! [[S-DSP registers#FIR|C1]]
! [[S-DSP registers#FIR|FIR1]]
!
! C1
! $1F
! $1F
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
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| Echo filter coefficient.
| Echo filter coefficient.
|-
|-
! [[S-DSP registers#FIR|C2]]
! [[S-DSP registers#FIR|FIR2]]
!
! C2
! $2F
! $2F
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
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| Echo filter coefficient.
| Echo filter coefficient.
|-
|-
! [[S-DSP registers#FIR|C3]]
! [[S-DSP registers#FIR|FIR3]]
!
! C3
! $3F
! $3F
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
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| Echo filter coefficient.
| Echo filter coefficient.
|-
|-
! [[S-DSP registers#FIR|C4]]
! [[S-DSP registers#FIR|FIR4]]
!
! C4
! $4F
! $4F
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
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| Echo filter coefficient.
| Echo filter coefficient.
|-
|-
! [[S-DSP registers#FIR|C5]]
! [[S-DSP registers#FIR|FIR5]]
!
! C5
! $5F
! $5F
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
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| Echo filter coefficient.
| Echo filter coefficient.
|-
|-
! [[S-DSP registers#FIR|C6]]
! [[S-DSP registers#FIR|FIR6]]
!
! C6
! $6F
! $6F
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
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| Echo filter coefficient.
| Echo filter coefficient.
|-
|-
! [[S-DSP registers#FIR|C7]]
! [[S-DSP registers#FIR|FIR7]]
!
! C7
! $7F
! $7F
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>
| style="text-align: right" | <tt style="white-space: nowrap">SVVV VVVV</tt>

Revision as of 10:22, 10 November 2024

See: APU register table

This table lists the 2 common names for the S-DSP global registers.

Name Address Bits Type Notes
MVOLL MVOL (L) $0C SVVV VVVV RW Left channel main volume, signed.
MVOLR MVOL (R) $1C SVVV VVVV RW Right channel main volume, signed.
EVOLL EVOL (L) $2C SVVV VVVV RW Left channel echo volume, signed.
EVOLR EVOL (R) $3C SVVV VVVV RW Right channel main volume, signed.
KON $4C 7654 3210 RW Key on. Writing this with any bit set will start a new note for the corresponding voice.
KOFF KOF $5C 7654 3210 RW Key off. Writing this with any bit set will put the corresponding voice into its release state.
FLG $6C RMEN NNNN RW Flags: soft reset (R), mute all (M), echo disable (E), noise frequency (N).
ENDX $7C 7654 3210 R Read for end of sample flag for each channel.
EFB $0D SVVV VVVV RW Echo feedback, signed.
- - $1D ---- ---- RW Unused.
PMON $2D 7654 321- RW Enables pitch modulation for each channel, controlled by OUTX of the next lower channel.
NON $3D 7654 3210 RW For each channel, replaces the sample waveform with the noise generator output.
EON $4D 7654 3210 RW For each channel, sends to the echo unit.
DIR $5D DDDD DDDD RW Pointer to the sample source directory page at $DD00.
ESA $6D EEEE EEEE RW Pointer to the start of the echo memory region at $EE00.
EDL $7D ---- DDDD RW Echo delay time (D).
FIR0 C0 $0F SVVV VVVV RW Echo filter coefficient.
FIR1 C1 $1F SVVV VVVV RW Echo filter coefficient.
FIR2 C2 $2F SVVV VVVV RW Echo filter coefficient.
FIR3 C3 $3F SVVV VVVV RW Echo filter coefficient.
FIR4 C4 $4F SVVV VVVV RW Echo filter coefficient.
FIR5 C5 $5F SVVV VVVV RW Echo filter coefficient.
FIR6 C6 $6F SVVV VVVV RW Echo filter coefficient.
FIR7 C7 $7F SVVV VVVV RW Echo filter coefficient.