0,0 → 1,51 |
/* |
* XMS driver |
* |
* This file is part of the Mateusz' DOS Routines (MDR): http://mdr.osdn.io |
* Published under the terms of the MIT License, as stated below. |
* |
* Copyright (C) 2014-2022 Mateusz Viste |
* |
* Permission is hereby granted, free of charge, to any person obtaining a copy |
* of this software and associated documentation files (the "Software"), to |
* deal in the Software without restriction, including without limitation the |
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
* sell copies of the Software, and to permit persons to whom the Software is |
* furnished to do so, subject to the following conditions: |
* |
* The above copyright notice and this permission notice shall be included in |
* all copies or substantial portions of the Software. |
* |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
* IN THE SOFTWARE. |
*/ |
|
#ifndef MDR_XMS_H |
#define MDR_XMS_H |
|
struct xms_struct { |
unsigned int handle; |
long memsize; /* allocated memory size, in bytes */ |
}; |
|
/* checks if a XMS driver is installed, inits it and allocates a memory block of memsize K-bytes. |
* if memsize is 0, then the maximum possible block will be allocated. |
* returns the amount of allocated memory (in K-bytes) on success, 0 otherwise. */ |
unsigned int xms_init(struct xms_struct *xms, unsigned int memsize); |
|
/* free XMS memory */ |
void xms_close(struct xms_struct *xms); |
|
/* copies a chunk of memory from conventional memory into the XMS block. |
returns 0 on sucess, non-zero otherwise. */ |
int xms_push(struct xms_struct *xms, void far *src, unsigned int len, long xmsoffset); |
|
/* copies a chunk of memory from the XMS block into conventional memory */ |
int xms_pull(struct xms_struct *xms, long xmsoffset, void far *dst, unsigned int len); |
|
#endif |