diff options
Diffstat (limited to 'src/emu/cpu/cop400/420ops.c')
-rw-r--r-- | src/emu/cpu/cop400/420ops.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/emu/cpu/cop400/420ops.c b/src/emu/cpu/cop400/420ops.c new file mode 100644 index 00000000000..d5c47751a93 --- /dev/null +++ b/src/emu/cpu/cop400/420ops.c @@ -0,0 +1,93 @@ +/************************************************************************** + * National Semiconductor COP420 Emulator * + * * + * Copyright (C) 2006 MAME Team * + **************************************************************************/ + +#define SC R.SC + +#define PUSH(addr) { SC = SB; SB = SA; SA = addr; } +#define POP() { PC = SA; SA = SB; SB = SC; } + +#include "410ops.c" + +#define IN_IN() IN(COP400_PORT_IN) + +INLINE void adt(void) { A = (A + 10) & 0x0F; } + +INLINE void casc(void) +{ + A = (A ^ 0xF) + RAM_R(B) + C; + + if (A > 0xF) + { + C = 1; + skip = 1; + A &= 0xF; + } + else + { + C = 0; + } +} + +INLINE void cqma(void) +{ + WRITE_M(Q >> 4); + A = Q & 0xF; +} + +INLINE void inil(void) +{ + // NOT IMPLEMENTED + A = IN_IN(); +} + +INLINE void cop421_inil(void) +{ + // NOT IMPLEMENTED +} + +INLINE void inin(void) { A = IN_IN(); } + +INLINE void cop402m_inin(void) { A = IN_IN() | 0x02; } + +INLINE void ldd(void) +{ + A = RAM_R(ROM(PC++) & 0x3f); +} + +INLINE void ogi0(void) { WRITE_G(0); } +INLINE void ogi1(void) { WRITE_G(1); } +INLINE void ogi2(void) { WRITE_G(2); } +INLINE void ogi3(void) { WRITE_G(3); } +INLINE void ogi4(void) { WRITE_G(4); } +INLINE void ogi5(void) { WRITE_G(5); } +INLINE void ogi6(void) { WRITE_G(6); } +INLINE void ogi7(void) { WRITE_G(7); } +INLINE void ogi8(void) { WRITE_G(8); } +INLINE void ogi9(void) { WRITE_G(9); } +INLINE void ogi10(void) { WRITE_G(10); } +INLINE void ogi11(void) { WRITE_G(11); } +INLINE void ogi12(void) { WRITE_G(12); } +INLINE void ogi13(void) { WRITE_G(13); } +INLINE void ogi14(void) { WRITE_G(14); } +INLINE void ogi15(void) { WRITE_G(15); } + +INLINE void skt(void) +{ + if (R.timerlatch == 1) + { + R.timerlatch = 0; + skip = 1; + } +} + +INLINE void xabr(void) +{ + UINT8 Br = A & 0x03; + UINT8 Bd = B & 0x0f; + + A = (B & 0x30) >> 4; + B = (Br << 4) + Bd; +} |