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CP1610 updates for intellivision

This commit is contained in:
alyosha-tas 2016-11-11 16:48:50 -05:00 committed by GitHub
parent 65e43ca1c4
commit 9cb9941fb2
1 changed files with 40 additions and 40 deletions
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80
BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.Execute.cs
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@ -261,20 +261,20 @@ namespace BizHawk.Emulation.Cores.Components.CP1610
case 0x025:
case 0x026:
case 0x027:
throw new NotImplementedException();
//dest = (byte)(opcode & 0x7);
//dest_value = Register[dest];
//ones = (dest_value ^ 0xFFFF);
//result = ones + 1;
//Calc_FlagC(result);
//Calc_FlagO_Add(ones, 1, result);
//result &= 0xFFFF;
//Calc_FlagS(result);
//Calc_FlagZ(result);
//Register[dest] = (ushort)result;
//cycles = 6;
//Interruptible = true;
//break;
// ------------------------NEEDS TESTING---------------------------
dest = (byte)(opcode & 0x7);
dest_value = Register[dest];
var ones = (dest_value ^ 0xFFFF);
result = ones + 1;
Calc_FlagC(result);
Calc_FlagO_Add(ones, 1, result);
result &= 0xFFFF;
Calc_FlagS(result);
Calc_FlagZ(result);
Register[dest] = (ushort)result;
cycles = 6;
Interruptible = true;
break;
// ADCR
case 0x028:
case 0x029:
@ -284,20 +284,20 @@ namespace BizHawk.Emulation.Cores.Components.CP1610
case 0x02D:
case 0x02E:
case 0x02F:
throw new NotImplementedException();
//dest = (byte)(opcode & 0x7);
//dest_value = Register[dest];
//carry = FlagC ? 1 : 0;
//result = dest_value + carry;
//Calc_FlagC(result);
//Calc_FlagO_Add(dest_value, carry, result);
//result &= 0xFFFF;
//Calc_FlagS(result);
//Calc_FlagZ(result);
//Register[dest] = (ushort)result;
//cycles = 6;
//Interruptible = true;
//break;
// ------------------------NEEDS TESTING---------------------------
dest = (byte)(opcode & 0x7);
dest_value = Register[dest];
var carry = FlagC ? 1 : 0;
result = dest_value + carry;
Calc_FlagC(result);
Calc_FlagO_Add(dest_value, carry, result);
result &= 0xFFFF;
Calc_FlagS(result);
Calc_FlagZ(result);
Register[dest] = (ushort)result;
cycles = 6;
Interruptible = true;
break;
// GSWD
case 0x030:
case 0x031:
@ -1655,18 +1655,18 @@ namespace BizHawk.Emulation.Cores.Components.CP1610
case 0x385:
case 0x386:
case 0x387:
throw new NotImplementedException();
//dest = (byte)(opcode & 0x7);
//addr = ReadMemory(RegisterPC++);
//dest_value = Register[dest];
//addr_read = ReadMemory(addr);
//result = dest_value & addr_read;
//Calc_FlagS(result);
//Calc_FlagZ(result);
//Register[dest] = (ushort)result;
//cycles = 10;
//Interruptible = true;
//break;
// ------------------------NEEDS TESTING---------------------------
dest = (byte)(opcode & 0x7);
addr = ReadMemory(RegisterPC++);
dest_value = Register[dest];
addr_read = ReadMemory(addr);
result = dest_value & addr_read;
Calc_FlagS(result);
Calc_FlagZ(result);
Register[dest] = (ushort)result;
cycles = 10;
Interruptible = true;
break;
// AND@
case 0x388:
case 0x389: