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★ HARDWARE Manual ★ SCSP User's Manual
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SCSP User's Manual/4.1 Register Map

■DSP control register

The DSP control register defines the interface area of the DSP installed in the SCSP.

Table 4.5 DSP Control Register
address
 MSB
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 -3-
 -2-
 -1-
 LSB
100700h COEF REG "COEF[12:0]" 0 0 0
100702h COEF REG "COEF[12:0]" 0 0 0
: : : : :
10077Eh COEF REG "COEF[12:0]" 0 0 0
100780h MEMORY ADDRESS REG "MADRS[16:1]"
100782h MEMORY ADDRESS REG "MADRS[16:1]"
: :
1007BEh MEMORY ADDRESS REG "MADRS[16:1]"
: Setting prohibited
100800h DSP micro program (512 words)
100C00h DSP internal buffer (370 words)

Listing 4.4 DSP control register

■DSP micro program map

Table 4.6 DSP microprogram
address
 MSB
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 LSB
100800h DSP MICRO PROGRAM(STEP_0) "MPRO[63:48]"
100802h DSP MICRO PROGRAM(STEP_0) "MPRO[47:32]"
100804h DSP MICRO PROGRAM(STEP_0) "MPRO[31:16]"
100806h DSP MICRO PROGRAM(STEP_0) "MPRO[15:0]"
100808h DSP MICRO PROGRAM(STEP_1) "MPRO[63:48]"
: :
100810h DSP MICRO PROGRAM(STEP_2) "MPRO[63:48]"
: :
: :
: :
100BF8h DSP MICRO PROGRAM(STEP_127) "MPRO[63:48]"
100BFAh DSP MICRO PROGRAM(STEP_127) "MPRO[47:32]"
100BFCh DSP MICRO PROGRAM(STEP_127) "MPRO[31:16]"
100BFEh DSP MICRO PROGRAM(STEP_127) "MPRO[15:0]"

List Table 4.5 DSP microprogram

■DSP buffer map

Table 4.7 DSP buffer map
address
 MSB
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 ---
 LSB
100C00h - - - - - - - - TEMP[7:0]
100C02h WORK BUFFER 00 TEMP[23:8]
: :
100DFCh - - - - - - - - TEMP[7:0]
100DFEh WORK BUFFER 127 TEMP[23:8]
: :
100E00h - - - - - - - - MEMS[7:0]
100E02h SOUND MEMORY 00 MEMS[23:8]
: :
100E7Ch - - - - - - - - MEMS[7:0]
100E7Eh SOUND MEMORY 31 MEMS[23:8]
100E80h - - - - - - - - - - - - MIXS[3:0]
100E82h MIX SOUND SLOT DATA STACK 00 MIXS[19:4]
: :
100EBCh - - - - - - - - - - - - MIXS[3:0]
100EBh MIX SOUND SLOT DATA STACK 15 MIXS[19:4]
100EC0h EFFECTED DATA OUTPUT 00 MIXS[15:0]
: :
100EDEh EFFECTED DATA OUTPUT 15 MIXS[15:0]
100EE0h - - - - - - - - - - - - - - - -
100EE2h - - - - - - - - - - - - - - - -

Listing 4.6 Buffer in DSP

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★ HARDWARE Manual ★ SCSP User's Manual
Copyright SEGA ENTERPRISES, LTD., 1997