Hi!
MODE does indeed have verbose errorlevels in codepage handling:
With FreeCOM, you can display them like this:
C:\>mode con cp prepare=((437) c:\freedos\cpi\ega.cpx)
MODE: No compatible FreeDOS DISPLAY driver loaded.
Syntax example: ... DISPLAY CON=(VGA,437,1)
C:\>echo %errorlevel%
101
Other MODE functions are more boring in their errorlevels, for example
they just produce 0 if okay and 1 or 255 (-1) on error.
Regards, Eric
Mode is a typical example. At
https://gitlab.com/FreeDOS/base/mode/-/blob/master/DOC/MODE/MODE.TXT
there is a big explanation what the original mode.com from 1995 can do
for me. But the last change was in 2015 - and as it looks like a lot of
things were changed without a documentation, among others FD has no park
function.
If I understand this right, the actual errorlevels should be like this
(found them at modecp.c - hopefully correct?)
MODE has the following ERRORLEVEL / EXITCODES [1]:
generic:
100: INTERNAL ERROR: size for prepared table too small
101: No compatible FreeDOS DISPLAY [2] driver loaded.
Syntax example: ... DISPLAY [2] CON=(VGA,437,1)
102: File not found
103: Error specifying codepage / buffer
104: Error: selected buffer not present
105: Syntax error
check codepage:
26: Active codepage was never set
27: Device read codepage error
prepare codepage:
27: Codepage was not found in CPI file
29: Could not get codepage info from file (or XMS troubles)
31: specified CPI file is damaged (or XMS troubles)
end prepare codepage:
31: INTERNAL ERROR: End prepare without Begin prepare
select codepage:
26: Specified codepage was not found in file
27: KEYB failed to change codepage
29: Device select codepage failed (or XMS troubles)
31: Device select codepage error
(I think 0 should be added too)
The orignal looks as follows:
Errorlevels returned by MODE are as follows:
0 No error
115 Serial port does not exist (either for COMn: or LPTn:=COMx)
117 No hard disk(s) found to park
118 Specified video mode is not supported on this machine
162 Insufficient memory (MODE requires about 6K of memory)
241 Parameter out of range (e.g. time value, LPT port number etc)
242 Cannot have 43-line or 50-line modes with modes other than
CO80
243 Unknown baud rate
244 Must specify both DELAY= and RATE= for typematic setting
246 More than one command or command type was given
255 Incorrect usage syntax (all usage syntax errors)
Question: Which are the correct errorlevels?
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