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103 lines
4.9 KiB
C
103 lines
4.9 KiB
C
/*****************************************************************************/
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/* */
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/* accelerator.h */
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/* */
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/* Accelerator specific definitions */
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/* */
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/* */
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/* */
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/* (C) 2018 Marco van den Heuvel */
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/* EMail: blackystardust68@yahoo.com */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef _ACCELERATOR_H
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#define _ACCELERATOR_H
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/*****************/
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/* Speed defines */
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/*****************/
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#define SPEED_SLOW 0x00
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#define SPEED_FAST 0xFF
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#define SPEED_1X SPEED_SLOW
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#define SPEED_2X 2 - 1 /* C64 Chameleon, C64DTV, C128, PET 65816, Apple2 Fast Chip, Apple2 TransWarp, Apple2 Zip Chip */
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#define SPEED_3X 3 - 1 /* C64 Chameleon, C65, PET 65816, Apple2 Booster, Apple 2 Fast Chip, Apple2 Titan, Apple2 TransWarp, Apple2 Zip Chip */
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#define SPEED_4X 4 - 1 /* C64 Chameleon, C64 TurboMaster, C64 TurboProcess, PET 65816, Apple2 Fast Chip, Apple2 Zip Chip */
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#define SPEED_5X 5 - 1 /* C64 Chameleon, PET 65816, Apple2 Fast Chip */
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#define SPEED_6X 6 - 1 /* C64 Chameleon, PET 65816, Apple2 Fast Chip */
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#define SPEED_7X 7 - 1 /* PET 65816, Apple2 Fast Chip */
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#define SPEED_8X 8 - 1 /* C64 Flash8, PET 65816, Apple 2 Fast Chip */
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#define SPEED_10X 10 - 1 /* PET 65816, Apple2 Fast Chip */
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#define SPEED_12X 12 - 1 /* Apple2 Fast Chip */
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#define SPEED_16X 16 - 1 /* Apple2 Fast Chip */
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#define SPEED_20X 20 - 1 /* C64/C128 SuperCPU */
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/***********************************/
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/* Accelerator function prototypes */
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/***********************************/
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/* C64/C128 SuperCPU cartridge */
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extern unsigned char __fastcall__ set_scpu_speed (unsigned char speed);
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/* Set the speed of the SuperCPU cartridge, using SPEED_SLOW will switch to
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* 1 Mhz mode, SPEED_20X or SPEED_FAST will switch to 20 Mhz mode.
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*
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* Note that any value lower than SPEED_20X will switch to 1 Mhz mode, and
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* any value higher or equal to SPEED_20X will switch to 20 Mhz mode.
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*
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* This function will return the actual speed the CPU is at after trying
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* to set the requested speed, if this is not the speed that was requested
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* then possibly the hardware speed switch prevented any software speed
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* switching.
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*
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* This function does not check for the presence of the SuperCPU cartridge,
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* make sure you use 'detect_scpu();' before using.
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*/
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extern unsigned char get_scpu_speed (void);
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/* Get the speed of the SuperCPU cartridge.
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*
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* Possible return values:
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* SPEED_1X : 1 Mhz mode
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* SPEED_20X : 20 Mhz mode
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*
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* This function does not check for the presence of the SuperCPU cartridge,
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* make sure you use 'detect_scpu();' before using.
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*/
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extern unsigned char detect_scpu (void);
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/* Check for the presence of the SuperCPU cartridge.
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*
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* Possible return values:
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* 0x00 : SuperCPU cartridge not present
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* 0x01 : SuperCPU cartridge present
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*/
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/* End of accelerator.h */
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#endif
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