diff options
Diffstat (limited to 'src/emu/cpu/m6809/m6809.h')
-rw-r--r-- | src/emu/cpu/m6809/m6809.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/emu/cpu/m6809/m6809.h b/src/emu/cpu/m6809/m6809.h new file mode 100644 index 00000000000..9dcaccd9e88 --- /dev/null +++ b/src/emu/cpu/m6809/m6809.h @@ -0,0 +1,50 @@ +/*** m6809: Portable 6809 emulator ******************************************/ + +#ifndef _M6809_H +#define _M6809_H + +#include "cpuintrf.h" + +enum { + M6809_PC=1, M6809_S, M6809_CC ,M6809_A, M6809_B, M6809_U, M6809_X, M6809_Y, + M6809_DP }; + +#define M6809_IRQ_LINE 0 /* IRQ line number */ +#define M6809_FIRQ_LINE 1 /* FIRQ line number */ + +void m6809_get_info(UINT32 state, cpuinfo *info); +void m6809e_get_info(UINT32 state, cpuinfo *info); + +/****************************************************************************/ +/* Read a byte from given memory location */ +/****************************************************************************/ +/* ASG 971005 -- changed to program_read_byte_8/cpu_writemem16 */ +#define M6809_RDMEM(Addr) ((unsigned)program_read_byte_8(Addr)) + +/****************************************************************************/ +/* Write a byte to given memory location */ +/****************************************************************************/ +#define M6809_WRMEM(Addr,Value) (program_write_byte_8(Addr,Value)) + +/****************************************************************************/ +/* Z80_RDOP() is identical to Z80_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 M6809_RDOP(Addr) ((unsigned)cpu_readop(Addr)) + +/****************************************************************************/ +/* Z80_RDOP_ARG() is identical to Z80_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 M6809_RDOP_ARG(Addr) ((unsigned)cpu_readop_arg(Addr)) + +#ifndef FALSE +# define FALSE 0 +#endif +#ifndef TRUE +# define TRUE (!FALSE) +#endif + +#endif /* _M6809_H */ |