[aandrejevic] 67003: [NTVDM] INT 21h, AH = OAh - Special characters should be echoed onto the screen (like ^A, etc...) and appended to the buffer.

Author: aandrejevic
Date: Tue Mar 31 21:45:12 2015
New Revision: 67003

URL: http://svn.reactos.org/svn/reactos?rev=67003&view=rev
Log:
[NTVDM]
INT 21h, AH = OAh - Special characters should be echoed onto
the screen (like ^A, etc...) and appended to the buffer.


Modified:
    trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c

Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c	[iso-8859-1] Tue Mar 31
21:45:12 2015
@@ -1539,6 +1539,9 @@
                     /* Ctrl-C */
                     case 0x03:
                     {
+                        DosPrintCharacter(DOS_OUTPUT_HANDLE, '^');
+                        DosPrintCharacter(DOS_OUTPUT_HANDLE, 'C');
+
                         if (DosControlBreak()) return;
                         break;
                     }
@@ -1561,15 +1564,19 @@
 
                     default:
                     {
-                        if (Character == 0x0A || Character == 0x0D
-                            || (Character >= 0x20 && Character <= 0x7F))
+                        /* Append it to the buffer */
+                        InputBuffer->Buffer[Count] = Character;
+                        Count++; /* Carriage returns are also counted */
+
+                        /* Check if this is a special character */
+                        if (Character < 0x20 && Character != 0x0A &&
Character != 0x0D)
                         {
-                            /* Echo the character and append it to the buffer */
-                            DosPrintCharacter(DOS_OUTPUT_HANDLE, Character);
-                            InputBuffer->Buffer[Count] = Character;
-
-                            Count++; /* Carriage returns are also counted */
+                            DosPrintCharacter(DOS_OUTPUT_HANDLE, '^');
+                            Character += 'A' - 1;
                         }
+
+                        /* Echo the character */
+                        DosPrintCharacter(DOS_OUTPUT_HANDLE, Character);
                     }
                 }