98 lines
3.7 KiB
C
98 lines
3.7 KiB
C
#ifndef M68KCONF__HEADER
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#define M68KCONF__HEADER
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/* ======================================================================== */
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/* ======================== SUB 68K CONFIGURATION ========================= */
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/* ======================================================================== */
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/* Configuration switches.
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* Use OPT_SPECIFY_HANDLER for configuration options that allow callbacks.
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* OPT_SPECIFY_HANDLER causes the core to link directly to the function
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* or macro you specify, rather than using callback functions whose pointer
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* must be passed in using m68k_set_xxx_callback().
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*/
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#define OPT_OFF 0
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#define OPT_ON 1
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#define OPT_SPECIFY_HANDLER 2
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/* If ON, the CPU will call m68k_write_32_pd() when it executes move.l with a
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* predecrement destination EA mode instead of m68k_write_32().
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* To simulate real 68k behavior, m68k_write_32_pd() must first write the high
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* word to [address+2], and then write the low word to [address].
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*/
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#define M68K_SIMULATE_PD_WRITES OPT_OFF
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/* If ON, CPU will call the interrupt acknowledge callback when it services an
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* interrupt.
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* If off, all interrupts will be autovectored and all interrupt requests will
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* auto-clear when the interrupt is serviced.
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*/
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#define M68K_EMULATE_INT_ACK OPT_SPECIFY_HANDLER
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#define M68K_INT_ACK_CALLBACK(A) scd_68k_irq_ack(A)
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/* If ON, CPU will call the output reset callback when it encounters a reset
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* instruction.
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*/
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#define M68K_EMULATE_RESET OPT_OFF
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#define M68K_RESET_CALLBACK() your_reset_handler_function()
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/* If ON, CPU will call the callback when it encounters a tas
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* instruction.
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*/
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#define M68K_TAS_HAS_CALLBACK OPT_SPECIFY_HANDLER
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#define M68K_TAS_CALLBACK() 1
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/* If ON, CPU will call the set fc callback on every memory access to
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* differentiate between user/supervisor, program/data access like a real
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* 68000 would. This should be enabled and the callback should be set if you
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* want to properly emulate the m68010 or higher. (moves uses function codes
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* to read/write data from different address spaces)
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*/
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#define M68K_EMULATE_FC OPT_OFF
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#define M68K_SET_FC_CALLBACK(A) your_set_fc_handler_function(A)
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/* If ON, the CPU will monitor the trace flags and take trace exceptions
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*/
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#define M68K_EMULATE_TRACE OPT_OFF
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/* If ON, the CPU will emulate the 4-byte prefetch queue of a real 68000 */
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#define M68K_EMULATE_PREFETCH OPT_OFF
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/* If ON, the CPU will generate address error exceptions if it tries to
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* access a word or longword at an odd address.
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* NOTE: This is only emulated properly for 68000 mode.
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*/
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#ifdef ENABLE_SUB_68K_ADDRESS_ERROR_EXCEPTIONS
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#define M68K_EMULATE_ADDRESS_ERROR OPT_ON
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#else
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#define M68K_EMULATE_ADDRESS_ERROR OPT_OFF
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#endif
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/* If ON and previous option is also ON, address error exceptions will
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also be checked when fetching instructions. Disabling this can help
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speeding up emulation while still emulating address error exceptions
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on other memory access if needed.
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* NOTE: This is only emulated properly for 68000 mode.
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*/
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#define M68K_CHECK_PC_ADDRESS_ERROR OPT_OFF
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/* ----------------------------- COMPATIBILITY ---------------------------- */
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/* The following options set optimizations that violate the current ANSI
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* standard, but will be compliant under the forthcoming C9X standard.
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*/
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/* If ON, the enulation core will use 64-bit integers to speed up some
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* operations.
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*/
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#define M68K_USE_64_BIT OPT_OFF
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/* ======================================================================== */
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/* ============================== END OF FILE ============================= */
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/* ======================================================================== */
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#endif /* M68KCONF__HEADER */
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