| 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 |