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New Romheader format (#1628)

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This commit is contained in:
Derek Hensley
2024-05-17 06:00:45 -07:00
committed by GitHub
parent c609d3dcae
commit de69d62800
3 changed files with 196 additions and 17 deletions
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tools/disasm/disasm.py
+50 -16
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@@ -1756,16 +1756,48 @@ def get_overlay_sections(vram, overlay):
[bss_end_vram, bss_end_vram, "reloc", None, overlay[header_loc:], None],
]
def get_storage_medium(id):
if id == 'N':
return "CARTRIDGE"
elif id == 'C':
return "CARTRIDGE_EXPANDABLE"
elif id == 'D':
return "DISK"
elif id == 'E':
return "DISK_EXPANSION"
else:
return "UNKNOWN"
def get_region(id):
if id == 'A':
return "ALL"
elif id == 'J':
return "JP"
elif id == 'E':
return "US"
elif id == 'P':
return "PAL"
elif id == 'G':
return "GATEWAY"
elif id == 'L':
return "LODGENET"
else:
return "UNKNOWN"
def disassemble_makerom(section):
os.makedirs(f"{ASM_OUT}/makerom/", exist_ok=True)
if section[2] == "rom_header":
(
endian,
pi_dom1_reg,
pi_dom1_pwd,
pi_dom1_lat,
clockrate,
entrypoint,
revision,
pad_ver,
hw_ver,
os_ver,
chksum1,
chksum2,
pad1,
@@ -1776,26 +1808,28 @@ def disassemble_makerom(section):
cart_id,
region,
version,
) = struct.unpack(">IIIIIIII20sII2s1sB", section[4])
) = struct.unpack(">BBBBIIHBBIIII20sII2s1sB", section[4])
out = f"""/*
* The Legend of Zelda: Majora's Mask ROM header
*/
.word 0x{pi_dom1_reg:08X} /* PI BSD Domain 1 register */
.word 0x{clockrate:08X} /* Clockrate setting */
.word 0x{entrypoint:08X} /* Entrypoint function (`entrypoint`) */
.word 0x{revision:08X} /* Revision */
.word 0x{chksum1:08X} /* Checksum 1 */
.word 0x{chksum2:08X} /* Checksum 2 */
.word 0x{pad1:08X} /* Unknown */
.word 0x{pad2:08X} /* Unknown */
.ascii "{rom_name.decode('ascii')}" /* Internal ROM name */
.word 0x{pad3:08X} /* Unknown */
.word 0x{cart:08X} /* Cartridge */
.ascii "{cart_id.decode('ascii')}" /* Cartridge ID */
.ascii "{region.decode('ascii')}" /* Region */
.byte 0x{version:02X} /* Version */
#include "rom_header.h"
/* 0x00 */ ENDIAN_IDENTIFIER
/* 0x01 */ PI_DOMAIN_1_CFG({pi_dom1_lat}, {pi_dom1_pwd}, {pi_dom1_reg & 0xF}, {(pi_dom1_reg >> 4) & 3})
/* 0x04 */ SYSTEM_CLOCK_RATE_SETTING(0x{clockrate:X})
/* 0x08 */ ENTRYPOINT(0x{entrypoint:08X})
/* 0x0C */ LIBULTRA_VERSION({hw_ver // 10}, {hw_ver % 10}, {chr(os_ver)})
/* 0x10 */ CHECKSUM()
/* 0x18 */ PADDING(8)
/* 0x20 */ ROM_NAME("{rom_name.decode('ascii').rstrip()}")
/* 0x34 */ PADDING(7)
/* 0x3B */ MEDIUM({get_storage_medium(chr(cart))})
/* 0x3C */ GAME_ID("{cart_id.decode('ascii')}")
/* 0x3E */ REGION({get_region(region.decode('ascii'))})
/* 0x3F */ GAME_REVISION({version})
"""
with open(ASM_OUT + "/makerom/rom_header.s", "w") as outfile:
outfile.write(out)