diff --git a/biostools/analyzers.py b/biostools/analyzers.py
index dfe9b16..86099f4 100644
--- a/biostools/analyzers.py
+++ b/biostools/analyzers.py
@@ -332,8 +332,11 @@ class AMIAnalyzer(Analyzer):
 		self._precolor_block_pattern = re.compile(b'''\(C\)(?:[0-9]{4}(?:AMI,404-263-8181|TGem-HCS,PSC,JGS)|( Access Methods Inc\.))''')
 		# "Date:-" might not have a space after it (Intel AMI)
 		self._precolor_date_pattern = re.compile(b'''(?:(?: Date:- ?|AMI- )[0-9]{2}/[0-9]{2}/[0-9]{2}|DDaattee(?:::|  )--(?:  )?([0-9])\\1([0-9])\\2//([0-9])\\3([0-9])\\4//([0-9])\\5([0-9])\\6)''')
-		self._precolor_string_pattern = re.compile(b'''\\xFE{4}((?:[\\x00-\\xFF]{4}\\x96){2}[\\x00-\\xFF]{6})''')
+		# Decoded: "\xFE([^-]{4}-(?:[^-]{4}-)?[^-]{6})"
+		self._precolor_string_pattern = re.compile(b'''\\xFE([\\x00-\\x95\\x97-\\xFF]{4}\\x96(?:[\\x00-\\x95\\x97-\\xFF]{4}\\x96)?[\\x00-\\x95\\x97-\\xFF]{6})''')
 		self._precolor_signon_pattern = re.compile(b'''BIOS \(C\).*(?:AMI|American Megatrends Inc), for ([\\x0D\\x0A\\x20-\\x7E]+)''')
+		# Decoded: "\(C\)AMI, \(([^\)]{11})\)"
+		self._8088_string_pattern = re.compile(b'''\\xEC\\x5F\\x6C\\x60\\x5A\\x5C\\xEA\\xF0\\xEC([\\x00-\\x6B\\x6D-\\xFF]{11})\\x6C''')
 
 		self.register_check_list([
 			(self._string_pcchips,			RegexChecker),
@@ -416,39 +419,46 @@ class AMIAnalyzer(Analyzer):
 					# Determine location of the identification block.
 					id_block_index = match.start(0)
 
-					# Access Methods doesn't have the setup type and chipset.
-					if not match.group(1):
-						# Locate the encoded string.
-						match = self._precolor_string_pattern.search(file_data)
-						if match:
-							# Extract string.
-							self.string = ''
-							for c in match.group(1):
-								c = ~c & 0xff
-								c = ((c << 5) | (c >> 3)) & 0xff
-								self.string += chr(c)
-							return True
-						else:
-							# Fallback if we can't find the encoded string.
-							self.string = '????-'
-
-					# Add vendor ID.
-					self.string += codecs.encode(file_data[id_block_index - 0xbb:id_block_index - 0xb9], 'hex').decode('ascii', 'ignore').upper()
-
-					# Add date.
-					self.string += '-' + util.read_string(file_data[id_block_index + 0x9c:id_block_index + 0xa4]).replace('/', '').strip()
-
-					# Invalidate string if the identification block doesn't
-					# appear to be valid. (Intel AMI post-Color without string)
-					if self.string[:10] in ('????-0000-', '????-0166-'):
+					# Locate the encoded string.
+					match = self._precolor_string_pattern.search(file_data)
+					if match:
+						# Extract string.
 						self.string = ''
-						return True
+						for c in match.group(1):
+							c = ~c & 0xff
+							c = ((c << 5) | (c >> 3)) & 0x7f
+							self.string += chr(c)
+					else:
+						# Fallback if we can't find the encoded string.
+						self.string = '????-'
+
+						# Add vendor ID.
+						self.string += codecs.encode(file_data[id_block_index - 0xbb:id_block_index - 0xb9], 'hex').decode('ascii', 'ignore').upper()
+
+						# Add date.
+						self.string += '-' + util.read_string(file_data[id_block_index + 0x9c:id_block_index + 0xa4]).replace('/', '').strip()
+
+						# Invalidate string if the identification block doesn't
+						# appear to be valid. (Intel AMI post-Color without string)
+						if self.string[:10] in ('????-0000-', '????-0166-'):
+							self.string = ''
+							return True
 				elif check_match.group(1): # 8088-BIOS header
 					# Extract version.					
 					self.version = check_match.group(1).decode('cp437', 'ignore')
 
-					# More string guesswork, but in this case, the vendor ID is nowhere to be seen.
-					self.string = '????-' + self.version.replace('/', '')
+					# Locate the encoded string.
+					match = self._8088_string_pattern.search(file_data)
+					if match:
+						# Extract string.
+						self.string = ''
+						for c in match.group(1):
+							c = -c & 0xff
+							c = ((c << 1) | (c >> 7)) & 0x7f
+							self.string += chr(c)
+					else:
+						# Fallback if we can't find the encoded string.
+						self.string = '????-' + self.version.replace('/', '')
 
 				# Extract additional information after the copyright as a sign-on.
 				# (Shuttle 386SX, CDTEK 286, Flying Triumph Access Methods)