From: Hermès Bélusca-Maïto <hermes.belusca-maito@reactos.org>
Date: Mon, 23 Dec 2013 22:01:17 +0000 (+0000)
Subject: [NTVDM]: DOS: Implement INT 29h: DOS 2+ Fast Console Output.
X-Git-Tag: backups/0.3.17@66124~1365^2~158
X-Git-Url: https://git.reactos.org/?p=reactos.git;a=commitdiff_plain;h=d1398349c9449fe7d32c58ef1b3a8b139536c72b;hp=936b30b6014a429b6d75528ccb11d8f303752fa9

[NTVDM]: DOS: Implement INT 29h: DOS 2+ Fast Console Output.

svn path=/branches/ntvdm/; revision=61365
---

diff --git a/subsystems/ntvdm/dos.c b/subsystems/ntvdm/dos.c
index 46b330e6ccb..c871d3daa4c 100644
--- a/subsystems/ntvdm/dos.c
+++ b/subsystems/ntvdm/dos.c
@@ -2575,6 +2575,24 @@ VOID WINAPI DosBreakInterrupt(LPWORD Stack)
     VdmRunning = FALSE;
 }
 
+VOID WINAPI DosFastConOut(LPWORD Stack)
+{
+    /*
+     * This is the DOS 2+ Fast Console Output Interrupt.
+     * See Ralf Brown: http://www.ctyme.com/intr/rb-4124.htm
+     * for more information.
+     */
+    UNREFERENCED_PARAMETER(Stack);
+
+    /*
+     * The default handler under DOS 2.x and 3.x simply calls INT 10/AH=0Eh.
+     * Do better and call directly BiosPrintCharacter: it's what INT 10/AH=0Eh
+     * does. Otherwise we would have to set BL to DOS_CHAR_ATTRIBUTE and
+     * BH to Bda->VideoPage.
+     */
+    BiosPrintCharacter(getAL(), DOS_CHAR_ATTRIBUTE, Bda->VideoPage);
+}
+
 VOID WINAPI DosInt2Fh(LPWORD Stack)
 {
     DPRINT1("DOS System Function INT 0x2F, AH = %xh, AL = %xh NOT IMPLEMENTED!\n",
@@ -2731,6 +2749,7 @@ BOOLEAN DosInitialize(VOID)
 //  RegisterInt32(0x22, DosInt22h        ); // Termination
     RegisterInt32(0x23, DosBreakInterrupt); // Ctrl-C / Ctrl-Break
 //  RegisterInt32(0x24, DosInt24h        ); // Critical Error
+    RegisterInt32(0x29, DosFastConOut    ); // DOS 2+ Fast Console Output
     RegisterInt32(0x2F, DosInt2Fh        );
 
     return TRUE;