Topic       : The ATARI Compendium
Author      : Scott Sanders / JAY Software
Version     : 1.25 (20/6/2003)
Subject     : Documentation
Nodes       : 1117
Index Size  : 32614
HCP-Version : 6
Compiled on : Atari
@charset    : UTF-8
@lang       : en
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@help       : %About
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                       Falcon030 DSP / DMA Controller


Location(s)   SizeBYTE   Occupies one byte (8 bits).
WORD   Occupies one WORD (16 bits).
LONG   Occupies one longword (32 bits).
OW     Occupies the odd WORD of a LONG.
EW     Occupies the even WORD of a LONG.
OB     Occupies the odd BYTE of a WORD.
EB     Occupies the even BYTE of the WORD.
  MchnIf the box is shaded then address is available
for this computer.

        ▒ ▒ ▒ ▒ ▒ ▒
        | | | | | '------- Falcon030
        | | | | '--------- TT030
        | | | '----------- MEGA STe
        | | '------------- STe
        | '--------------- MEGA ST
        '----------------- ST
  TypeROM          Location is Read-Only Memory
RAM          Location is Read-Write Memory
I/O          Location is hardware-mapped
VME          Location addresses VME address space
N/A          Not applicable
RO           Read-only location
WO           Write-only location
RW           Read-write location
RSVD         Reserved
Unassigned   Either not assigned or undocumented
  Meaning                         (see Usage)

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0x00FF8930    WORD      ▒ I/O   DMA Crossbar Output Select Controller as
                        ▒       follows:
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0x00FF8932    WORD      ▒ I/O   DMA Crossbar Input Select Controller as
                        ▒       follows:
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0x00FF8934    BYTE      ▒ I/O   Frequency Divider External Sync (0 =
                        ▒       STe/TT030 Compatible Prescaler, 1-15 =
                        ▒       Divide by 256 and then the value given)
                        ▒
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0x00FF8935    BYTE      ▒ I/O   Frequency Divider Internal Sync as
                        ▒       follows:
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                        ▒       Value     Meaning
                        ▒         0    STe Compatible Mode
                        ▒         1    49170 Hz
                        ▒         2    32780 Hz
                        ▒         3    24585 Hz
                        ▒         4    19668 Hz
                        ▒         5    16390 Hz
                        ▒         6    14049 Hz
                        ▒         7    12292 Hz
                        ▒         8    10927 Hz
                        ▒         9     9834 Hz
                        ▒        10     8940 Hz
                        ▒        11     8195 Hz
                        ▒        12     7565 Hz
                        ▒        13     7024 Hz
                        ▒        14     6556 Hz
                        ▒        15     6146 Hz
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0x00FF8936    BYTE      ▒ I/O   Record Tracks Select as follows:
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0x00FF8937    BYTE      ▒ I/O   CODEC Input Source as follows:
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0x00FF8938    BYTE      ▒ I/O   CODEC ADC Input as follows:
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0x00FF8939    BYTE      ▒ I/O   Gain settings (0-15 per channel) as
                        ▒       follows:
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0x00FF893A    BYTE      ▒ I/O   Attenuation settings (0-15 per channel) as
                        ▒       follows:
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0x00FF8940    OB        ▒ I/O   GPIO Data direction as follows:
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0x00FF8942    OB        ▒ I/O   GPIO Data (Low three bits) Read or write
                        ▒       by setting direction bits above
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0x00FF8944 -  N/A  ▒▒▒▒▒▒ I/O   Unassigned
0x00FF895F         ▒▒▒▒▒▒
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