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Diffstat (limited to 'src/emu/machine/mc146818.h')
-rw-r--r-- | src/emu/machine/mc146818.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/emu/machine/mc146818.h b/src/emu/machine/mc146818.h new file mode 100644 index 00000000000..0f83135571b --- /dev/null +++ b/src/emu/machine/mc146818.h @@ -0,0 +1,55 @@ +/********************************************************************* + + mc146818.h + + Implementation of the MC146818 chip + + Real time clock chip with batteru buffered ram + Used in IBM PC/AT, several PC clones, Amstrad NC200 + + Peter Trauner (peter.trauner@jk.uni-linz.ac.at) + +*********************************************************************/ + +#ifndef MC146818_H +#define MC146818_H + +typedef enum +{ + MC146818_STANDARD, + MC146818_IGNORE_CENTURY, // century is NOT set, for systems having other usage of this byte + MC146818_ENHANCED +} MC146818_TYPE; + + + +/* initialize mc146818 emulation, call only once at beginning */ +void mc146818_init(MC146818_TYPE type); + +/* loads data from standard nvram file */ +void mc146818_load(void); + +/* loads data from file stream */ +void mc146818_load_stream(mame_file *file); + +/* saves data into standard nvram file */ +void mc146818_save(void); + +/* saves data into file stream */ +void mc146818_save_stream(mame_file *file); + +NVRAM_HANDLER( mc146818 ); + +READ8_HANDLER(mc146818_port_r); +WRITE8_HANDLER(mc146818_port_w); + +READ16_HANDLER(mc146818_port16le_r); +WRITE16_HANDLER(mc146818_port16le_w); + +READ32_HANDLER(mc146818_port32le_r); +WRITE32_HANDLER(mc146818_port32le_w); + +READ64_HANDLER(mc146818_port64be_r); +WRITE64_HANDLER(mc146818_port64be_w); + +#endif /* MC146818_H */ |