diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/smx/_event.asm')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/smx/_event.asm | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/smx/_event.asm b/board/MAI/bios_emulator/scitech/src/pm/smx/_event.asm deleted file mode 100644 index da62b1f712..0000000000 --- a/board/MAI/bios_emulator/scitech/src/pm/smx/_event.asm +++ /dev/null @@ -1,175 +0,0 @@ -;**************************************************************************** -;* -;* SciTech Multi-platform Graphics 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: 80386 Assembler -;* Environment: IBM PC (MS DOS) -;* -;* Description: Assembly language support routines for the event module. -;* -;**************************************************************************** - - ideal - -include "scitech.mac" ; Memory model macros - -ifdef flatmodel - -header _event ; Set up memory model - -begdataseg _event - - cextern _EVT_biosPtr,DPTR - - cpublic _EVT_dataStart - -ifdef USE_NASM -%define KB_HEAD WORD esi+01Ah ; Keyboard buffer head in BIOS data area -%define KB_TAIL WORD esi+01Ch ; Keyboard buffer tail in BIOS data area -%define KB_START WORD esi+080h ; Start of keyboard buffer in BIOS data area -%define KB_END WORD esi+082h ; End of keyboard buffer in BIOS data area -else -KB_HEAD EQU WORD esi+01Ah ; Keyboard buffer head in BIOS data area -KB_TAIL EQU WORD esi+01Ch ; Keyboard buffer tail in BIOS data area -KB_START EQU WORD esi+080h ; Start of keyboard buffer in BIOS data area -KB_END EQU WORD esi+082h ; End of keyboard buffer in BIOS data area -endif - - cpublic _EVT_dataEnd - -enddataseg _event - -begcodeseg _event ; Start of code segment - - cpublic _EVT_codeStart - -;---------------------------------------------------------------------------- -; int _EVT_getKeyCode(void) -;---------------------------------------------------------------------------- -; Returns the key code for the next available key by extracting it from -; the BIOS keyboard buffer. -;---------------------------------------------------------------------------- -cprocstart _EVT_getKeyCode - - enter_c - - mov esi,[_EVT_biosPtr] - xor ebx,ebx - xor eax,eax - mov bx,[KB_HEAD] - cmp bx,[KB_TAIL] - jz @@Done - xor eax,eax - mov ax,[esi+ebx] ; EAX := character from keyboard buffer - inc _bx - inc _bx - cmp bx,[KB_END] ; Hit the end of the keyboard buffer? - jl @@1 - mov bx,[KB_START] -@@1: mov [KB_HEAD],bx ; Update keyboard buffer head pointer - -@@Done: leave_c - ret - -cprocend - -;---------------------------------------------------------------------------- -; int _EVT_disableInt(void); -;---------------------------------------------------------------------------- -; Return processor interrupt status and disable interrupts. -;---------------------------------------------------------------------------- -cprocstart _EVT_disableInt - - pushf ; Put flag word on stack - cli ; Disable interrupts! - pop eax ; deposit flag word in return register - ret - -cprocend - -;---------------------------------------------------------------------------- -; void _EVT_restoreInt(int ps); -;---------------------------------------------------------------------------- -; Restore processor interrupt status. -;---------------------------------------------------------------------------- -cprocstart _EVT_restoreInt - - ARG ps:UINT - - push ebp - mov ebp,esp ; Set up stack frame - push [DWORD ps] - popf ; Restore processor status (and interrupts) - pop ebp - ret - -cprocend - -;---------------------------------------------------------------------------- -; int EVT_rdinx(int port,int index) -;---------------------------------------------------------------------------- -; Reads an indexed register value from an I/O port. -;---------------------------------------------------------------------------- -cprocstart EVT_rdinx - - ARG port:UINT, index:UINT - - push ebp - mov ebp,esp - mov edx,[port] - mov al,[BYTE index] - out dx,al - inc dx - in al,dx - movzx eax,al - pop ebp - ret - -cprocend - -;---------------------------------------------------------------------------- -; void EVT_wrinx(int port,int index,int value) -;---------------------------------------------------------------------------- -; Writes an indexed register value to an I/O port. -;---------------------------------------------------------------------------- -cprocstart EVT_wrinx - - ARG port:UINT, index:UINT, value:UINT - - push ebp - mov ebp,esp - mov edx,[port] - mov al,[BYTE index] - mov ah,[BYTE value] - out dx,ax - pop ebp - ret - -cprocend - - cpublic _EVT_codeEnd - -endcodeseg _event - -endif - - END ; End of module |
