mirror/86Box-bios-tools
1
0
Fork 0
mirror of https://github.com/86Box/bios-tools.git synced 2026-02-24 02:18:21 -07:00
Code Issues Packages Projects Releases Wiki Activity

PhoenixAnalyzer: Fix register extraction corner case for 4.04

Browse Source
This commit is contained in:
RichardG867
2023-04-20 17:58:49 -03:00
parent 6b39317a90
commit a347c33a48
1 changed files with 5 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
biostools/analyzers.py
View File

@@ -2757,7 +2757,7 @@ class PhoenixAnalyzer(Analyzer):
bcpsegment_offset = match.start(0)
self.debug_print('Probing BCPSEGMENT at', hex(bcpsegment_offset))
offset = bcpsegment_offset + 0x0a
# Sometimes there's no BCP immediately after BCPSEGMENT (Micronics M54LI)
# Sometimes there's no BCP immediately after BCPSEGMENT (Micronics M54Li)
# BCP can be way ahead (366 bytes on DEC Venturis FX) - old 256-byte check didn't cut it
if virtual_mem[offset:offset + 3] != b'BCP':
next_bcp_offset = virtual_mem[offset:offset + 1024].find(b'BCP')
@@ -2947,8 +2947,10 @@ class PhoenixAnalyzer(Analyzer):
regtable_segment = code_segment
else:
code_segment = dmi_segment = regtable_segment
elif bcpsys.version_maj == 1 and bcpsys.version_min >= 5 and data_size >= 0x6d:
regtable_start, regtable_end, code_segment = struct.unpack('<HHH', bcpsys.data[0x67:0x6d])
elif bcpsys.version_maj == 1 and bcpsys.version_min >= 5 and data_size >= 0x6b:
regtable_start, regtable_end = struct.unpack('<HH', bcpsys.data[0x67:0x6b])
if data_size >= 0x6d: # data can end without this value (BCPSYS 1.5 on Micronics M54Li 07)
code_segment, = struct.unpack('<H', bcpsys.data[0x6b:0x6d])
regtable_segment = (bcpsys.offset >> 4) & 0xf000 # not always F000 due to inverted BIOSes
else:
regtable_segment = None