the10thwiz/cc65
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added C65/C64DX accelerator code and documentation.

Browse Source
This commit is contained in:
Marco van den Heuvel
2018-04-27 14:22:41 -07:00
parent 47e4b36180
commit 11629bcf99
8 changed files with 254 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
include/accelerator.h
View File

@@ -226,6 +226,43 @@ unsigned char detect_chameleon (void);
* 0x01 : C64 Chameleon cartridge present
*/
/* C65/C64DX in C64 mode */
unsigned char __fastcall__ set_c65_speed (unsigned char speed);
/* Set the speed of the C65/C64DX CPU, using SPEED_SLOW will switch to
* 1 Mhz mode, SPEED_3X or SPEED_FAST will switch to 3.5 Mhz (fast) mode.
*
* Note that any value higher or equal to SPEED_3X will switch to fast mode.
*
* This function will return the actual speed the CPU is at after trying
* to set the requested speed, to my knowledge the switching should not fail.
*
* This function does not check for the presence of a C65/C64DX in C64 mode,
* make sure you use 'detect_c65();' before using.
*/
unsigned char get_c65_speed (void);
/* Get the speed of the C65/C64DX CPU.
*
* Possible return values:
* SPEED_SLOW : Slow mode
* SPEED_3X : Fast mode
*
* This function does not check for the presence of a C65/C64DX in C64 mode,
* make sure you use 'detect_c65();' before using.
*/
unsigned char detect_c65 (void);
/* Check for the presence of a C65/C64DX in C64 mode.
*
* Possible return values:
* 0x00 : C65/C64DX in C64 mode not present
* 0x01 : C65/C64DX in C64 mode present
*/
/* End of accelerator.h */
#endif