Este script en python lo utilizo para volcar archivos binarios (tipo bsave) de pantallas de screen 5 a c o ensamblador. También puedes extraer fácilmente la paleta de pantallazos en screen 5 o tiles del screen 2.
Espero que le sea útil a alguien más.
Ejemplo:
Para extraer la paleta de colores de una pantalla screen 5:
python bsave.py -i pantallazo.sc5 -o pantallazo.asm -s 0x7680 -z 32 -v -f asm
Obtenemos:
db 11h,01h,00h,00h,14h,02h,17h,04h,12h,02h
db 52h,01h,44h,04h,21h,02h,21h,04h,41h,05h
db 41h,03h,64h,03h,73h,06h,56h,06h,61h,04h
db 77h,07h
import sys
import getopt
def read(input, start, size, verbose):
bytes = input.read()
if bytes[0] != 0xfe:
print("Unknown input file format")
sys.exit(1)
header_start = bytes[2] * 256 + bytes[1]
header_stop = bytes[4] * 256 + bytes[3]
header_run = bytes[6] * 256 + bytes[5]
if verbose:
print("""Header:
Start: %s
Stop: %s
Run: %s""" % (hex(header_start), hex(header_stop), hex(header_run)))
if start != None:
offset = start - header_start + 7
if offset < 0:
print("Start addres out of bounds")
sys.exit(1)
else:
offset = 0
if verbose:
print("File offset %x" % (offset))
if size == None:
size = len(bytes)
output_bytes = []
for i in range(0, size):
output_bytes.append(bytes[offset + i])
return output_bytes
def dump_bin(output, bytes):
with open(output, "w") as o:
for x in bytes:
o.write(chr(x))
def dump_asm(output, bytes):
with open(output, "w") as o:
bytes = ["%02Xh" % i for i in bytes]
for x in range(0, len(bytes), 10):
o.write("\tdb ")
o.write(",".join(bytes[x:][:10]))
o.write("\n")
def dump_c(output, bytes):
with open(output, "w") as o:
bytes = ["0x%02X" % i for i in bytes]
o.write("const unsigned char bytes[] = {\n")
for x in range(0, len(bytes), 10):
o.write("\t" + ",".join(bytes[x:][:10]))
if x+10 <= len(bytes):
o.write(",")
o.write("\n")
o.write("\n}")
def dump_none(output, bytes):
with open(output, "w") as o:
bytes = ["%02X" % i for i in bytes]
for x in range(0, len(bytes), 10):
o.write(" ".join(bytes[x:][:10]))
o.write("\n")
def usage():
print("""bsave.py [options])
Options:
-h --help Show help
-s offset --start offset Start address of dump
-z bytes --size bytes Number of bytes to dump
-i filename --input filename Input filename
-o filename --output filename Output filename
-v --verbose Verbose
-f type --format type Output type format
Output type formats:
bin Binary output
c C format
asm ASM format
none Text output
""")
def main(argv):
input = None
output = None
start_offset = None
size = None
verbose = False
format = "none"
try:
opts, args = getopt.getopt(argv,
"hs:z:i:o:vf:",
["help", "start", "size", "input", "output", "verbose", "format"])
except getopt.GetoptError:
usage()
sys.exit(2)
for opt, arg in opts:
if opt in ("-h", "--help"):
usage()
sys.exit()
elif opt in ("-s", "--start"):
if arg[:2] == '0x':
start_offset = int(arg[2:], 16)
else:
start_offset = int(arg)
elif opt in ("-z", "--size"):
if arg[:2] == '0x':
size = int(arg[2:], 16)
else:
size = int(arg)
elif opt in ("-i", "--input"):
input = arg
elif opt in ("-o", "--output"):
output = arg
elif opt in ("-v", "--verbose"):
verbose = True
elif opt in ("-f", "--format"):
format = arg
if input == None:
print("Missing input file")
usage()
sys.exit(3)
if output == None:
print("Missing output file")
usage()
sys.exit(4)
# get bytes
with open(input, "rb") as i:
bytes = read(i, start_offset, size, verbose)
# write bytes
if format == "bin":
dump_bin(output, bytes)
else:
if format == "none":
dump_none(output, bytes)
elif format == "c":
dump_c(output, bytes)
elif format == "asm":
dump_asm(output, bytes)
if __name__ == '__main__':
main(sys.argv[1:])
