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

-Enabled the ops that merely set / clear flags...there's no way I could have messed those up. 

-Tested and implemented the MVO op.
-Implemented the other direct ops.

I think my double byte data handling isn't working. Will diagnose.
This commit is contained in:
brandman211 2012-07-28 17:50:32 +00:00
parent 748efbcd20
commit 53c0dd5ee0
1 changed files with 68 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
BizHawk.Emulation/CPUs/CP1610/Execute.cs
View File

@ -36,7 +36,7 @@ namespace BizHawk.Emulation.CPUs.CP1610
public void Execute(int cycles)
{
byte dest, src, mem;
ushort dest_value, src_value, mem_read, addr, offset;
ushort dest_value, src_value, mem_read, addr, addr_read, offset;
int decle2, decle3, result = 0;
int ones, carry, status_word, lower, sign, cond, ext;
bool branch = false;
@ -56,17 +56,14 @@ namespace BizHawk.Emulation.CPUs.CP1610
// Unexpected behavior.
throw new ArgumentException();
case 0x001: // SDBD
throw new NotImplementedException();
FlagD = true;
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
case 0x002: // EIS
throw new NotImplementedException();
FlagI = true;
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
case 0x003: // DIS
throw new NotImplementedException();
FlagI = false;
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
@ -103,12 +100,10 @@ namespace BizHawk.Emulation.CPUs.CP1610
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
case 0x006: // CLRC
throw new NotImplementedException();
FlagC = false;
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
case 0x007: // SETC
throw new NotImplementedException();
FlagC = true;
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
@ -1114,7 +1109,11 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x245:
case 0x246:
case 0x247:
throw new NotImplementedException();
src = (byte)(opcode & 0x7);
addr = ReadMemory(RegisterPC++);
WriteMemory(addr, Register[src]);
PendingCycles -= 11; TotalExecutedCycles += 11;
break;
// MVO@
case 0x248:
case 0x249:
@ -1190,6 +1189,11 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x286:
case 0x287:
throw new NotImplementedException();
dest = (byte)(opcode & 0x7);
addr = ReadMemory(RegisterPC++);
Register[dest] = ReadMemory(addr);
PendingCycles -= 10; TotalExecutedCycles += 10;
break;
// MVI@
case 0x288:
case 0x289:
@ -1285,6 +1289,19 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x2C6:
case 0x2C7:
throw new NotImplementedException();
dest = (byte)(opcode & 0x7);
addr = ReadMemory(RegisterPC++);
dest_value = Register[dest];
addr_read = ReadMemory(addr);
result = dest_value + addr_read;
Calc_FlagC(result);
Calc_FlagO_Add(dest_value, addr_read);
Calc_FlagS(result);
Calc_FlagZ(result);
result &= 0xFFFF;
Register[dest] = (ushort)result;
PendingCycles -= 10; TotalExecutedCycles += 10;
break;
// ADD@
case 0x2C8:
case 0x2C9:
@ -1388,6 +1405,19 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x306:
case 0x307:
throw new NotImplementedException();
dest = (byte)(opcode & 0x7);
addr = ReadMemory(RegisterPC++);
dest_value = Register[dest];
addr_read = ReadMemory(addr);
result = dest_value - addr_read;
Calc_FlagC(result);
Calc_FlagO_Add(dest_value, -addr_read);
Calc_FlagS(result);
Calc_FlagZ(result);
result &= 0xFFFF;
Register[dest] = (ushort)result;
PendingCycles -= 10; TotalExecutedCycles += 10;
break;
// SUB@
case 0x308:
case 0x309:
@ -1492,6 +1522,17 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x346:
case 0x347:
throw new NotImplementedException();
dest = (byte)(opcode & 0x7);
addr = ReadMemory(RegisterPC++);
dest_value = Register[dest];
addr_read = ReadMemory(addr);
result = dest_value - addr_read;
Calc_FlagC(result);
Calc_FlagO_Add(dest_value, -addr_read);
Calc_FlagS(result);
Calc_FlagZ(result);
PendingCycles -= 10; TotalExecutedCycles += 10;
break;
// CMP@
case 0x348:
case 0x349:
@ -1594,6 +1635,16 @@ namespace BizHawk.Emulation.CPUs.CP1610
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;
PendingCycles -= 10; TotalExecutedCycles += 10;
break;
// AND@
case 0x388:
case 0x389:
@ -1694,6 +1745,16 @@ namespace BizHawk.Emulation.CPUs.CP1610
case 0x3C6:
case 0x3C7:
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;
PendingCycles -= 10; TotalExecutedCycles += 10;
break;
// XOR@
case 0x3C8:
case 0x3C9: