work towards CCGMS compatibility

STATUS.md

@@ -85,6 +85,7 @@ Not all of them - only these we want to have implemented.
 | `$A68E`   | RUNC         | DONE     |                                                    |
 | `$A7AE`   | NEWSTT       | PARTIAL  | redirected to RUN command                          |
 | `$AB1E`   | STROUT       | DONE     |                                                    |
+| `$AD9E`   | FRMEVL       | NOT DONE |                                                    |
 | `$BDCD`   | LINPRT       | DONE     | temporary implementation                           |
 | `$E3BF`   | INIT         | NOT DONE |                                                    |
 | `$E422`   | INITMSG      | DONE     |                                                    |
@@ -167,6 +168,7 @@ Not all of them - only these we want to have implemented.
 | `$E6B6`   | advance cursor               | NOT DONE |                                                    |
 | `$E701`   | previous line                | NOT DONE |                                                    |
 | `$E716`   | screen CHROUT                | NOT DONE |                                                    |
+| `$E8DA`   | color code table             | DONE     |                                                    |
 | `$E8EA`   | scroll line                  | NOT DONE |                                                    |
 | `$E96C`   | insert line on top           | NOT DONE |                                                    |
 | `$E9FF`   | clear line                   | NOT DONE |                                                    |

c64/basic/ad9e.frmevl.s

@@ -0,0 +1,5 @@
+
+// XXX provide documentation and implementation
+
+FRMEVL:
+	STUB_IMPLEMENTATION()

c64/basic/ad9e.interop

@@ -0,0 +1,3 @@
+
+This routine is desribed in Mapping the C64, page 102, and used at least by CCGMS terminal software - see here:
+- https://raw.githubusercontent.com/spathiwa/ccgmsterm/master/original/5a.gs

c64/kernal/assets/e8da.interop

@@ -0,0 +1,6 @@
+
+A color code table, see here:
+- https://csdb.dk/forums/index.php?roomid=7&topicid=487
+
+CCGMS termina program expects it to be under original location, see here:
+- https://raw.githubusercontent.com/spathiwa/ccgmsterm/master/original/5a.gs