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comparison z80_to_x86.c @ 1561:5a6339e46917

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Fix timing for Z80 JP cc, nn instruction
author Michael Pavone <pavone@retrodev.com>
date Sun, 08 Apr 2018 12:26:18 -0700
parents 2e6320d261ff
children 31effaadf877
comparison
equal deleted inserted replaced
1560:18ffa9caa00c 1561:5a6339e46917
2073 jmp_r(code, opts->gen.scratch1); 2073 jmp_r(code, opts->gen.scratch1);
2074 } 2074 }
2075 break; 2075 break;
2076 } 2076 }
2077 case Z80_JPCC: { 2077 case Z80_JPCC: {
2078 cycles(&opts->gen, num_cycles + 3);//T States: 4,3 2078 cycles(&opts->gen, num_cycles + 6);//T States: 4,3,3
2079 uint8_t cond = CC_Z; 2079 uint8_t cond = CC_Z;
2080 switch (inst->reg) 2080 switch (inst->reg)
2081 { 2081 {
2082 case Z80_CC_NZ: 2082 case Z80_CC_NZ:
2083 cond = CC_NZ; 2083 cond = CC_NZ;
2100 cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_S), SZ_B); 2100 cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_S), SZ_B);
2101 break; 2101 break;
2102 } 2102 }
2103 uint8_t *no_jump_off = code->cur+1; 2103 uint8_t *no_jump_off = code->cur+1;
2104 jcc(code, cond, code->cur+2); 2104 jcc(code, cond, code->cur+2);
2105 cycles(&opts->gen, 5);//T States: 5
2106 uint16_t dest_addr = inst->immed; 2105 uint16_t dest_addr = inst->immed;
2107 code_ptr call_dst = z80_get_native_address(context, dest_addr); 2106 code_ptr call_dst = z80_get_native_address(context, dest_addr);
2108 if (!call_dst) { 2107 if (!call_dst) {
2109 opts->gen.deferred = defer_address(opts->gen.deferred, dest_addr, code->cur + 1); 2108 opts->gen.deferred = defer_address(opts->gen.deferred, dest_addr, code->cur + 1);
2110 //fake address to force large displacement 2109 //fake address to force large displacement