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Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/tests/biosptr.c')
-rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/tests/biosptr.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/tests/biosptr.c b/board/MAI/bios_emulator/scitech/src/pm/tests/biosptr.c new file mode 100644 index 00000000000..43668487af3 --- /dev/null +++ b/board/MAI/bios_emulator/scitech/src/pm/tests/biosptr.c @@ -0,0 +1,92 @@ +/**************************************************************************** +* +* 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 manipulate the +* BIOS data area from protected mode using the PM +* library. Compile and link with the appropriate command +* line for your DOS extender. +* +* Functions tested: PM_getBIOSSelector() +* PM_getLong() +* PM_getByte() +* PM_getWord() +* +****************************************************************************/ + +#include <stdlib.h> +#include <stdio.h> +#include "pmapi.h" + +/* Macros to obtain values from the BIOS data area */ + +#define TICKS() PM_getLong(bios+0x6C) +#define KB_STAT PM_getByte(bios+0x17) +#define KB_HEAD PM_getWord(bios+0x1A) +#define KB_TAIL PM_getWord(bios+0x1C) + +/* Macros for working with the keyboard buffer */ + +#define KB_HIT() (KB_HEAD != KB_TAIL) +#define CTRL() (KB_STAT & 4) +#define SHIFT() (KB_STAT & 2) +#define ESC 0x1B + +/* Selector for BIOS data area */ + +uchar *bios; + +int main(void) +{ + int c,done = 0; + + 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; + } + + bios = PM_getBIOSPointer(); + printf("Hit any key to test, Ctrl-Shift-Esc to quit\n"); + while (!done) { + if (KB_HIT()) { + c = PM_getch(); + if (c == 0) PM_getch(); + printf("TIME=%-8lX ST=%02X CHAR=%02X ", TICKS(), KB_STAT, c); + printf("\n"); + if ((c == ESC) && SHIFT() && CTRL())/* Ctrl-Shift-Esc */ + break; + } + } + + return 0; +} |