ShuriZma
/
BizHawk
mirror of https://github.com/TASEmulators/BizHawk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Implemented the XXXR opcodes. As of now, I have Jump, MVO@, MVI@, and XORR enabled and tested. There might be an off by one error with MVO@.

This commit is contained in:
brandman211 2012-07-27 03:33:24 +00:00
parent 9ee133866d
commit 3a56f65c3f
1 changed files with 62 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
BizHawk.Emulation/CPUs/CP1610/Execute.cs
View File

@ -551,6 +551,21 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x0BE:
case 0x0BF:
throw new NotImplementedException();
src = (byte)((opcode >> 3) & 0x7);
dest = (byte)(opcode & 0x7);
result = Register[src];
Calc_FlagS(result);
Calc_FlagZ(result);
Register[dest] = (ushort)result;
if (dest == 0x6 || dest == 0x7)
{
PendingCycles -= 7; TotalExecutedCycles += 7;
}
else
{
PendingCycles -= 6; TotalExecutedCycles += 6;
}
break;
// ADDR
case 0x0C0:
case 0x0C1:
@ -617,6 +632,17 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x0FE:
case 0x0FF:
throw new NotImplementedException();
src = (byte)((opcode >> 3) & 0x7);
dest = (byte)(opcode & 0x7);
result = Register[dest] + Register[src];
Calc_FlagC(result);
Calc_FlagO_Add(dest, src);
Calc_FlagS(result);
Calc_FlagZ(result);
result &= 0xFFFF;
Register[dest] = (ushort)result;
PendingCycles -= 6; TotalExecutedCycles += 6;
break;
// SUBR
case 0x100:
case 0x101:
@ -683,6 +709,17 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x13E:
case 0x13F:
throw new NotImplementedException();
src = (byte)((opcode >> 3) & 0x7);
dest = (byte)(opcode & 0x7);
result = Register[dest] - Register[src];
Calc_FlagC(result);
Calc_FlagO_Add(ones, 1);
Calc_FlagS(result);
Calc_FlagZ(result);
result &= 0xFFFF;
Register[dest] = (ushort)result;
PendingCycles -= 6; TotalExecutedCycles += 6;
break;
// CMPR
case 0x140:
case 0x141:
@ -749,6 +786,15 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x17E:
case 0x17F:
throw new NotImplementedException();
src = (byte)((opcode >> 3) & 0x7);
dest = (byte)(opcode & 0x7);
result = Register[dest] - Register[src];
Calc_FlagC(result);
Calc_FlagO_Add(ones, 1);
Calc_FlagS(result);
Calc_FlagZ(result);
PendingCycles -= 6; TotalExecutedCycles += 6;
break;
// ANDR
case 0x180:
case 0x181:
@ -815,6 +861,14 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x1BE:
case 0x1BF:
throw new NotImplementedException();
src = (byte)((opcode >> 3) & 0x7);
dest = (byte)(opcode & 0x7);
result = Register[dest] & Register[src];
Calc_FlagS(result);
Calc_FlagZ(result);
Register[dest] = (ushort)result;
PendingCycles -= 6; TotalExecutedCycles += 6;
break;
// XORR
case 0x1C0:
case 0x1C1:
@ -880,7 +934,14 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x1FD:
case 0x1FE:
case 0x1FF:
throw new NotImplementedException();
src = (byte)((opcode >> 3) & 0x7);
dest = (byte)(opcode & 0x7);
result = Register[dest] ^ Register[src];
Calc_FlagS(result);
Calc_FlagZ(result);
Register[dest] = (ushort)result;
PendingCycles -= 6; TotalExecutedCycles += 6;
break;
// Branch Forward, no External Condition
case 0x200: // B
case 0x201: // BC