diff options
Diffstat (limited to 'src/emu/cpu/pic16c5x/pic16c5x.h')
-rw-r--r-- | src/emu/cpu/pic16c5x/pic16c5x.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/emu/cpu/pic16c5x/pic16c5x.h b/src/emu/cpu/pic16c5x/pic16c5x.h new file mode 100644 index 00000000000..bbe6f4a4baa --- /dev/null +++ b/src/emu/cpu/pic16c5x/pic16c5x.h @@ -0,0 +1,137 @@ + /**************************************************************************\ + * Microchip PIC16C5x Emulator * + * * + * Copyright (C) 2003+ Tony La Porta * + * Originally written for the MAME project. * + * * + * * + * Addressing architecture is based on the Harvard addressing scheme. * + * * + \**************************************************************************/ + +#ifndef _PIC16C5X_H +#define _PIC16C5X_H + + +#include "cpuintrf.h" + + +/************************************************************************** + * Internal Clock divisor + * + * External Clock is divided internally by 4 for the instruction cycle + * times. (Each instruction cycle passes through 4 machine states). + */ + +#define PIC16C5x_CLOCK_DIVIDER 4 + + +enum { + PIC16C5x_PC=1, PIC16C5x_STK0, PIC16C5x_STK1, PIC16C5x_FSR, + PIC16C5x_W, PIC16C5x_ALU, PIC16C5x_STR, PIC16C5x_OPT, + PIC16C5x_TMR0, PIC16C5x_PRTA, PIC16C5x_PRTB, PIC16C5x_PRTC, + PIC16C5x_WDT, PIC16C5x_TRSA, PIC16C5x_TRSB, PIC16C5x_TRSC, + PIC16C5x_PSCL +}; + + +/**************************************************************************** + * Function to configure the CONFIG register. This is actually hard-wired + * during ROM programming, so should be called in the driver INIT, with + * the value if known (available in HEX dumps of the ROM). + */ + +void pic16c5x_config(int data); + + +/**************************************************************************** + * Read the state of the T0 Clock input signal + */ + +#define PIC16C5x_T0 0x10 +#define PIC16C5x_T0_In (io_read_byte_8(PIC16C5x_T0)) + + +/**************************************************************************** + * Input a word from given I/O port + */ + +#define PIC16C5x_In(Port) ((UINT8)io_read_byte_8((Port))) + + +/**************************************************************************** + * Output a word to given I/O port + */ + +#define PIC16C5x_Out(Port,Value) (io_write_byte_8((Port),Value)) + + + +/**************************************************************************** + * Read a word from given RAM memory location + */ + +#define PIC16C5x_RAM_RDMEM(A) ((UINT8)data_read_byte_8(A)) + + +/**************************************************************************** + * Write a word to given RAM memory location + */ + +#define PIC16C5x_RAM_WRMEM(A,V) (data_write_byte_8(A,V)) + + + +/**************************************************************************** + * PIC16C5X_RDOP() is identical to PIC16C5X_RDMEM() except it is used for + * reading opcodes. In case of system with memory mapped I/O, this function + * can be used to greatly speed up emulation + */ + +#define PIC16C5x_RDOP(A) (cpu_readop16((A)<<1)) + + +/**************************************************************************** + * PIC16C5X_RDOP_ARG() is identical to PIC16C5X_RDOP() except it is used + * for reading opcode arguments. This difference can be used to support systems + * that use different encoding mechanisms for opcodes and opcode arguments + */ + +#define PIC16C5x_RDOP_ARG(A) (cpu_readop_arg16((A)<<1)) + + + + +#if (HAS_PIC16C54) +void pic16C54_get_info(UINT32 state, cpuinfo *info); +#endif + + +#if (HAS_PIC16C55) +void pic16C55_get_info(UINT32 state, cpuinfo *info); +#endif + + +#if (HAS_PIC16C56) +void pic16C56_get_info(UINT32 state, cpuinfo *info); +#endif + + +#if (HAS_PIC16C57) +void pic16C57_get_info(UINT32 state, cpuinfo *info); +#endif + + +#if (HAS_PIC16C58) +void pic16C58_get_info(UINT32 state, cpuinfo *info); +#endif + + +#if (HAS_PIC16C54) || (HAS_PIC16C55) || (HAS_PIC16C56) || (HAS_PIC16C57) || (HAS_PIC16C58) +#ifdef MAME_DEBUG +offs_t pic16C5x_dasm(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram); +#endif +#endif + + +#endif /* _PIC16C5X_H */ |