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g65816: properly calculate page crossing penalty cycle for ,Y addressing modes. [R. Belmont, O. Galibert]

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arbee 2022-04-23 18:01:51 -04:00
parent e2f4c3950d
commit 53b1e6b58e
1 changed files with 2 additions and 2 deletions
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4
src/devices/cpu/g65816/g65816.cpp
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@ -684,13 +684,13 @@ unsigned g65816_device::EA_DX() {return MAKE_UINT_16(REGISTER_D + g65816i_rea
unsigned g65816_device::EA_DY() {return MAKE_UINT_16(REGISTER_D + g65816i_read_8_immediate(EA_IMM8()) + REGISTER_Y);}
unsigned g65816_device::EA_AX() {unsigned tmp = EA_A(); if((tmp^(tmp+REGISTER_X))&0xff00) CLK(1); return tmp + REGISTER_X;}
unsigned g65816_device::EA_ALX() {return EA_AL() + REGISTER_X;}
unsigned g65816_device::EA_AY() {unsigned tmp = EA_A(); if((tmp^(tmp+REGISTER_X))&0xff00) CLK(1); return tmp + REGISTER_Y;}
unsigned g65816_device::EA_AY() {unsigned tmp = EA_A(); if((tmp^(tmp+REGISTER_Y))&0xff00) CLK(1); return tmp + REGISTER_Y;}
unsigned g65816_device::EA_DI() {return REGISTER_DB | g65816i_read_16_direct(EA_D());}
unsigned g65816_device::EA_DLI() {return g65816i_read_24_direct(EA_D());}
unsigned g65816_device::EA_AI() {return g65816i_read_16_normal(g65816i_read_16_immediate(EA_IMM16()));}
unsigned g65816_device::EA_ALI() {return g65816i_read_24_normal(EA_A());}
unsigned g65816_device::EA_DXI() {return REGISTER_DB | g65816i_read_16_direct(EA_DX());}
unsigned g65816_device::EA_DIY() {unsigned tmp = REGISTER_DB | g65816i_read_16_direct(EA_D()); if((tmp^(tmp+REGISTER_X))&0xff00) CLK(1); return tmp + REGISTER_Y;}
unsigned g65816_device::EA_DIY() {unsigned tmp = REGISTER_DB | g65816i_read_16_direct(EA_D()); if((tmp^(tmp+REGISTER_Y))&0xff00) CLK(1); return tmp + REGISTER_Y;}
unsigned g65816_device::EA_DLIY() {return g65816i_read_24_direct(EA_D()) + REGISTER_Y;}
unsigned g65816_device::EA_AXI() {return g65816i_read_16_normal(MAKE_UINT_16(g65816i_read_16_immediate(EA_IMM16()) + REGISTER_X));}
unsigned g65816_device::EA_S() {return MAKE_UINT_16(REGISTER_S + g65816i_read_8_immediate(EA_IMM8()));}