Most of the CBM 8-bit computers come with two character sets.  One of them has been referred to as the uppercase/graphics character set, and it is usally the default set.  It does not have any lower-case letters!  See the ASCII-X page for details on that one.  The alternate characterset (which has upper and lower case, but fewer graphic symbols) was typically called lowercase/uppercase (or dual-case) character set, back in the day.  I don't know when it started, but more recently it has been given the name PETSCII, in honor of the PET computer (the first serious CBM 8-bit), and standing for the PET Standard Code for Information Interchange.

 

Like many computers, PETSCII extends the 7-bit ASCII definition to 8-bits.  In theory this would double the number of characters from 128 to 256 (on most other computers it in fact does).  In reality, PETSCII only adds 64 characters (32 graphics and 32 control codes).  The other 64 are duplicates of the existing characters.  This is related to the fact that most CBM 8-bits can't generate reverse fonts in hardware, so half of the 256 font characters are reverse images of the other half.  So 128 normal characters, plus 64 control codes (which may appear as reverse-font characters) equals 192 "characters".  The remaining 256-192=64 are duplicates in the PETSCII code.

 

Note the computer (at least BASIC and the KERNAL) use the same codes regardless of which character set the user chooses for display.  This can make things confusing.  Many official publications and magazine articles from back in the day just use the term ASCII without referring to the character set in use; in this case you should be skeptical.  I would assume they refer to ASCII-X if they did not specifically mention the other (lowercase/uppercase) character set; if they did mention lower-case characters, I would infer the PETSCII set.

 

So here is a table listing the decimal and hexidecimal values of PETSCII, the character itself (Glyph), and the ASCII and Unicode equivalants, if they exist.  Some of the codes do not normally print a character, but peform an action.  These are shown under Glyph with a description and the reverse-font character that may appear in some circumstances (so-called quote mode and insert mode).  Otherwise, the glyph is only present if it has a Unicode value, although some browsers may not render them correctly (may appear as a blank, or square box, or ?).  There are also notes that describe the action of some codes, a keyboard combination to generate it, and/or a description of some characters.  There are some difference in the layouts of the CBM machines, but they are mostly equivalant.  The descriptions for keyboard shortcuts are based on the VIC-20/C64/C128.  I've also broken the table up into blocks to hopefully highlight the structure of this character set, although some things just seem to defy logic.