Explore an 8080 with Educator-8080 - Error messages

Table 3: Error Messages. This table consists of a list of address offsets (location <3>/014) followed by the ASCII error message strings. The octal values 201 through 377 are used to encode from 1 to 177 spaces (1 to 127 decimal). The strings contain a single space for these codes. The octal value 200 is used to indicate end of string, and is shown symbolically as the character "". The octal value 177 is used to indicate the dear screen operation, and is shown symbolically as the character "".

Address	Octal Code	ASCII String Value
<3>/014	153 024 043 063 063 104 127 153	Address Offsets for messages 0 through 7

<3>/024	116 120 125 124 040 124 117	'INPUT TOO LONG '
<3>/034	117 040 114 117 116 107 200

<3>/043	111 116 T26 101 114 111 104 040	'INVALID COMMAND '
<3>/053	103 117 115 115 101 116 104 200

<3>/063	111 116 126 101 114 111 104 040	'INVALID REGISTER '
<3>/073	122 105 107 111 123 124 105 122
<3>/103	200

<3>/104	111 116 126 101 114 111 104 040	'INVALID IMMED TYPE '
<3>/114	111 115 115 105 104 040 124 131
<3>/124	120 105 200

<3>/127	111 116 126 101 114 111 104 040	'INVALID IMMED VALUE '
<3>/137	111 115 1 15 105 104 040 126 101
<3>/147	114 125 105 200

<3>/153	105 122 122 117 122 041 200	'ERROR! '

The following string is given the name "ERRSP" and is used to clear the screen, then space down to the center prior to displaying an error message.

<3>/162	177 377 377 211 200	' '