apu2.h

00001 #ifndef __apu2_h__
00002 #define __apu2_h__
00003 
00004 
00005 #include <stdio.h>
00006 
00007 // offset in a .spc file
00008 #define OFFSET_SPCDATA      0x100
00009 #define OFFSET_DSPDATA      0x10100
00010 #define OFFSET_SPCRAM       0x101c0
00011 
00012 // Some SPC registers
00013 #define SPC_PORT0           0xf4
00014 #define SPC_PORT1           0xf5
00015 #define SPC_PORT2           0xf6
00016 #define SPC_PORT3           0xf7
00017 #define SPC_TIMER0          0xfa
00018 #define SPC_TIMER1          0xfb
00019 #define SPC_TIMER2          0xfc
00020 #define SPC_CONTROL         0xf1
00021 #define SPC_REGADD          0xf2
00022 
00023 // some Dsp registers address and bits
00024 #define DSP_FLG             0x6C
00025 #define DSP_FLG_RES         0x80
00026 #define DSP_FLG_MUTE        0x40
00027 #define DSP_FLG_ECEN        0x20
00028 #define DSP_ESA             0x6D
00029 #define DSP_EDL             0x7D
00030 #define DSP_KON             0x4C
00031 
00032 #define BOOT_SPC_PORT0      0x19
00033 #define BOOT_SPC_PORT1      0x1f
00034 #define BOOT_SPC_PORT2      0x25
00035 #define BOOT_SPC_PORT3      0x2b
00036 #define BOOT_SPC_TIMER2     0x07
00037 #define BOOT_SPC_TIMER1     0x0a
00038 #define BOOT_SPC_TIMER0     0x0d
00039 #define BOOT_SPC_CONTROL    0x10
00040 #define BOOT_DSP_FLG        0x38
00041 #define BOOT_DSP_KON        0x3e
00042 #define BOOT_SPC_REGADD     0x41
00043 #define BOOT_A              0x47
00044 #define BOOT_Y              0x49
00045 #define BOOT_X              0x4b
00046 #define BOOT_SP             0x44
00047 
00048 int LoadAPU_embedded(FILE *fp);
00049 
00050 
00051 #endif
00052 
00053 
00054 /*
00055 
00056 
00057 ; Disassembled with spcdasm
00058 ; Source filename: ../DSPcode.bin
00059 ; Origin: $0002
00060 ; Input length: 16
00061 p0002: MOV  $f2 , A        ; choose dsp register address (A)
00062 p0004: CMP  A , $f4        
00063 p0006: BNE  p0004          ; wait until Port0 equals A
00064 p0008: MOV  $f3 , $f5      ; now we can copy the value in Port1 
00065                            ; to the selected dsp address
00066 p000b: MOV  $f4 , A        ; say it's done by setting Port0 to the
00067                            ; dsp address
00068 p000d: INC  A              ; increment A so we will expect the next address
00069 p000e: BPL  p0002          ; while < 128, jump to p0002
00070 
00071 ; Jumps right after init code in rom, by underflowing
00072 ; the 16 bit program counter
00073 p0010: BRA  pffc9          ; 2fb7
00074 
00075 
00076 
00077 
00078 ; Disassembled with spcdasm
00079 ; Source filename: ../Bootcode.bin
00080 ; Origin: $0000
00081 ; Input length: 77
00082 p0000: MOV  $0 , #$0       ; $0001: ram $0000
00083 p0003: MOV  $1 , #$0       ; $0004: ram $0001
00084 p0006: MOV  $fc , #$ff     ; $0007: Timer2
00085 p0009: MOV  $fb , #$ff     ; $000a: Timer1
00086 p000c: MOV  $fa , #$4f     ; $000d: Timer0
00087 p000f: MOV  $f1 , #$31     ; $0010: SPC Control reg
00088 p0012: MOV  X , #$53       ;   
00089 p0014: MOV  $f4 , X        ; 
00090 p0016: MOV  A , $f4        ; 
00091 p0018: CMP  A , #$0        ; $0019: Port0
00092 p001a: BNE  p0016          ; 
00093 p001c: MOV  A , $f5        ; 
00094 p001e: CMP  A , #$0        ; $001f: Port1
00095 p0020: BNE  p001c          ; 
00096 p0022: MOV  A , $f6        ; 
00097 p0024: CMP  A , #$0        ; $0024: Port2
00098 p0026: BNE  p0022          ; 
00099 p0028: MOV  A , $f7        ; 
00100 p002a: CMP  A , #$0        ; $002b: Port3
00101 p002c: BNE  p0028          ; 
00102 p002e: MOV  A , $fd        ; 
00103 p0030: MOV  A , $fe        ; 
00104 p0032: MOV  A , $ff        ; 
00105 p0034: MOV  $f2 , #$6c     ; point to flg register
00106 p0037: MOV  $f3 , #$0      ; $0038: DSP FLG register
00107 p003a: MOV  $f2 , #$4c     ; point to kon register
00108 p003d: MOV  $f3 , #$0      ; $003e: DSP KON register
00109 p0040: MOV  $f2 , #$7f     ; $0041: SPC dsp reg addr.
00110 p0043: MOV  X , #$f5       ; $0044: SPC stack pointer
00111 p0045: MOV  SP , X         ;
00112 p0046: MOV  A , #$ff       ; $0047: SPC A register 
00113 p0048: MOV  Y , #$0        ; $0049: SPC Y register
00114 p004a: MOV  X , #$0        ; $004b: SPC X register
00115 p004c: RETI                ; 
00116 
00117 
00118 */