1 files changed, 110 insertions, 0 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/tests/isvesa.c b/board/MAI/bios_emulator/scitech/src/pm/tests/isvesa.c
new file mode 100644
index 0000000000..9c02452bb3
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+++ b/board/MAI/bios_emulator/scitech/src/pm/tests/isvesa.c
@@ -0,0 +1,110 @@
+/****************************************************************************
+*
+*                   SciTech OS Portability Manager Library
+*
+*  ========================================================================
+*
+*    The contents of this file are subject to the SciTech MGL Public
+*    License Version 1.0 (the "License"); you may not use this file
+*    except in compliance with the License. You may obtain a copy of
+*    the License at http://www.scitechsoft.com/mgl-license.txt
+*
+*    Software distributed under the License is distributed on an
+*    "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+*    implied. See the License for the specific language governing
+*    rights and limitations under the License.
+*
+*    The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
+*
+*    The Initial Developer of the Original Code is SciTech Software, Inc.
+*    All Rights Reserved.
+*
+*  ========================================================================
+*
+* Language:     ANSI C
+* Environment:  any
+*
+* Description:  Test program to check the ability to allocate real mode
+*               memory and to call real mode interrupt handlers such as
+*               the VESA VBE BIOS from protected mode. Compile and link
+*               with the appropriate command line for your DOS extender.
+*
+*               Functions tested:   PM_getVESABuf()
+*                                   PM_mapRealPointer()
+*                                   PM_int86x()
+*
+****************************************************************************/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "pmapi.h"
+
+/* SuperVGA information block */
+
+#pragma pack(1)
+
+typedef struct {
+    char    VESASignature[4];       /* 'VESA' 4 byte signature          */
+    short   VESAVersion;            /* VBE version number               */
+    ulong   OEMStringPtr;           /* Far pointer to OEM string        */
+    ulong   Capabilities;           /* Capabilities of video card       */
+    ulong   VideoModePtr;           /* Far pointer to supported modes   */
+    short   TotalMemory;            /* Number of 64kb memory blocks     */
+    char    reserved[236];          /* Pad to 256 byte block size       */
+    } VgaInfoBlock;
+
+#pragma pack()
+
+int main(void)
+{
+    RMREGS          regs;
+    RMSREGS         sregs;
+    VgaInfoBlock    vgaInfo;
+    ushort          *mode;
+    uint            vgLen;
+    uchar           *vgPtr;
+    unsigned        r_vgseg,r_vgoff;
+
+    printf("Program running in ");
+    switch (PM_getModeType()) {
+        case PM_realMode:
+            printf("real mode.\n\n");
+            break;
+        case PM_286:
+            printf("16 bit protected mode.\n\n");
+            break;
+        case PM_386:
+            printf("32 bit protected mode.\n\n");
+            break;
+        }
+
+    /* Allocate a 256 byte block of real memory for communicating with
+     * the VESA BIOS.
+     */
+    if ((vgPtr = PM_getVESABuf(&vgLen,&r_vgseg,&r_vgoff)) == NULL) {
+        printf("Unable to allocate VESA memory buffer!\n");
+        exit(1);
+        }
+
+    /* Call the VESA VBE to see if it is out there */
+    regs.x.ax = 0x4F00;
+    regs.x.di = r_vgoff;
+    sregs.es = r_vgseg;
+    memcpy(vgPtr,"VBE2",4);
+    PM_int86x(0x10, &regs, &regs, &sregs);
+    memcpy(&vgaInfo,vgPtr,sizeof(VgaInfoBlock));
+    if (regs.x.ax == 0x4F && strncmp(vgaInfo.VESASignature,"VESA",4) == 0) {
+        printf("VESA VBE version %d.%d BIOS detected\n\n",
+            vgaInfo.VESAVersion >> 8, vgaInfo.VESAVersion & 0xF);
+        printf("Available video modes:\n");
+        mode = PM_mapRealPointer(vgaInfo.VideoModePtr >> 16, vgaInfo.VideoModePtr & 0xFFFF);
+        while (*mode != 0xFFFF) {
+            printf("    %04hXh (%08X)\n", *mode, (int)mode);
+            mode++;
+            }
+        }
+    else
+        printf("VESA VBE not found\n");
+    return 0;
+}