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Replaced em_mapclean by em_commit

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1682 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2002-12-01 18:06:57 +00:00
parent f5193bc0d1
commit 0c38839e79
7 changed files with 44 additions and 44 deletions
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26
include/em.h
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@@ -54,11 +54,15 @@
#define EM_ERR_INV_DRIVER 3 /* Invalid driver */
#define EM_ERR_NO_DEVICE 4 /* Device (hardware) not found */
/* Parameters for the em_copy_... functions */
/* Parameters for the em_copy_... functions. NOTE: The first seven bytes
* have the same order and alignment as needed for the Commodore REU, so
* don't change the order without changing the assembler file that defines
* the struct offsets and the code in the REU driver.
*/
struct em_copy {
unsigned page; /* Starting page to copy from or to */
unsigned char offs; /* Offset into page */
void* buf; /* Memory buffer to copy from or to */
unsigned char offs; /* Offset into page */
unsigned page; /* Starting page to copy from or to */
unsigned count; /* Number of bytes to copy */
unsigned char unused; /* Make the size 8 bytes */
};
@@ -82,16 +86,16 @@ unsigned em_pagecount (void);
void* __fastcall__ em_map (unsigned page);
/* Unmap the current page from memory and map a new one. The function returns
* a pointer to the location of the page in memory.
* a pointer to the location of the page in memory. Note: Without calling
* em_commit, the old contents of the memory window may be lost!
*/
void* __fastcall__ em_mapclean (unsigned page);
/* Unmap the current page from memory and map a new one. The function returns
* a pointer to the location of the page in memory. This function differs from
* em_map_page() in that it will discard the contents of the currently mapped
* page, assuming that the page has not been modified or that the modifications
* are no longer needed, if this leads to better performance. NOTE: This does
* NOT mean that the contents of currently mapped page are always discarded!
void __fastcall__ em_commit (void);
/* Commit changes in the memory window to extended storage. If the contents
* of the memory window have been changed, these changes may be lost if
* em_map, em_copyfrom or em_copyto are called without calling em_commit
* first. Note: Not calling em_commit does not mean that the changes are
* discarded, it does just mean that some drivers will discard the changes.
*/
void __fastcall__ em_copyfrom (const struct em_copy* copy_data);