diff options
| author | Ian C <ianc@noddybox.co.uk> | 2012-03-07 22:48:11 +0000 |
|---|---|---|
| committer | Ian C <ianc@noddybox.co.uk> | 2012-03-07 22:48:11 +0000 |
| commit | 31203bc854656ff92844364903de9abee9daea8b (patch) | |
| tree | 540312afe7573eefde86bcd4c587a82d7bcf3ba4 /src/Noddybox.Emulation.EightBit.Z80/Z80CpuDecodeByte.cs | |
| parent | 7a79ba9eb1e7cbee6386d8c8e019fdc4738228a4 (diff) | |
Safe-keeping commit. Currently debugging emulation using FUSE tests.
Diffstat (limited to 'src/Noddybox.Emulation.EightBit.Z80/Z80CpuDecodeByte.cs')
| -rw-r--r-- | src/Noddybox.Emulation.EightBit.Z80/Z80CpuDecodeByte.cs | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/Noddybox.Emulation.EightBit.Z80/Z80CpuDecodeByte.cs b/src/Noddybox.Emulation.EightBit.Z80/Z80CpuDecodeByte.cs index f0256ba..22a6c98 100644 --- a/src/Noddybox.Emulation.EightBit.Z80/Z80CpuDecodeByte.cs +++ b/src/Noddybox.Emulation.EightBit.Z80/Z80CpuDecodeByte.cs @@ -141,7 +141,7 @@ namespace Noddybox.Emulation.EightBit.Z80 break;
case 0x10: // DJNZ
- if (--BC.high == 0)
+ if (--BC.high != 0)
{
clock.Add(13);
JR();
@@ -279,7 +279,7 @@ namespace Noddybox.Emulation.EightBit.Z80 break;
case 0x2a: // LD HL,(nnnnn)
- clock.Add(7);
+ clock.Add(16);
addr = FetchWord();
hl.low = memory.Read(addr);
hl.high = memory.Read((ushort)(addr + 1));
@@ -410,6 +410,7 @@ namespace Noddybox.Emulation.EightBit.Z80 F ^= Z80Flags.Carry;
ClearFlag(Z80Flags.Hidden);
+ ClearFlag(Z80Flags.Neg);
SetFlag(H35table[A]);
break;
@@ -734,7 +735,7 @@ namespace Noddybox.Emulation.EightBit.Z80 case 0x7e: // LD A,(HL)
clock.Add(7);
addr = (ushort)(hl.reg + Offset());
- HL.low = memory.Read(addr);
+ A = memory.Read(addr);
break;
case 0x7f: // LD A,A
|