Nesesito extraer sonidos de una Rom gb pero nesesito ayuda.
aqui estan unos datos para hacerlo.
Solo quiero que me den ejemplos de codigo en C o simplemente instrucciones de como hacerlo.
HEADER FIELDS
Offset Size Description
====== ==== ==========================
00 3 Identifier string ("GBS")
03 1 Version (1)
04 1 Number of songs (1-255)
05 1 First song (usually 1)
06 2 Load address ($400-$7fff)
08 2 Init address ($400-$7fff)
0a 2 Play address ($400-$7fff)
0c 2 Stack pointer
0e 1 Timer modulo (see TIMING)
0f 1 Timer control (see TIMING)
10 32 Title string
30 32 Author string
50 32 Copyright string
70 nnnn Code and Data (see RST VECTORS)
RST VECTORS
The GameBoy CPU has 8 1-byte instructions that call fixed addresses:
RST 00 = CALL $0000 RST 20 = CALL $0020
RST 08 = CALL $0008 RST 28 = CALL $0028
RST 10 = CALL $0010 RST 30 = CALL $0030
RST 18 = CALL $0018 RST 38 = CALL $0038
Register Name Description
======== ==== =============
FF05 TIMA Timer Counter
FF06 TMA Timer Modulo
FF07 TAC Timer Control
TAC Field Bits:
Bit 1 & 0, counter rate
00: 4096 Hz
01: 262144 Hz
10: 65536 Hz
11: 16384 Hz
Bit 2, interrupt type
0: Use v-blank
1: Use timer
Bit 6 - 3, reserved for expansion
Set them to 0
Bit 7, CPU clock rate
0: Use normal rate
1: Use 2x (fast) rate
ld hl,songs ; point to selection table
add a,l ; add accumulator to L
ld l,a
jr nc,$+1 ; increment H on overflow; if all table entries
inc h ; have same address MSB, you can eliminate this
ld a,(hl) ; read song number from table into accumulator
jp init ; jump to the init routine
songs: .db 3,1,5,4,2 ; selection sequence table
Esto es algo de informacion que consegui. solo nesesito un pequeño ejemplo para entender correctamente como utilizar esta informacion.
Saludos
"Viva C"
