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

commodore64: fix 6510 IO port input pin values

This commit is contained in:
saxxonpike 2012-12-02 15:10:37 +00:00
parent e960989034
commit 046e3244ce
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
BizHawk.Emulation/Computers/Commodore64/MOS/MOS6510.cs
View File

@ -43,7 +43,7 @@ namespace BizHawk.Emulation.Computers.Commodore64.MOS
// configure data port defaults
portDir = 0x00;
SetPortData(0x1F);
SetPortData(0x17);
// todo: verify this value (I only know that unconnected bits fade after a number of cycles)
unusedPinTTLCycles = 40;
@ -200,9 +200,9 @@ namespace BizHawk.Emulation.Computers.Commodore64.MOS
pinCassetteButton = ((val & 0x10) != 0);
pinCassetteMotor = ((val & 0x20) != 0);
pinLoram = ((val & 0x01) != 0);
pinHiram = ((val & 0x02) != 0);
pinCharen = ((val & 0x04) != 0);
pinLoram = ((val & 0x01) != 0) || ((portDir & 0x01) == 0);
pinHiram = ((val & 0x02) != 0) || ((portDir & 0x02) == 0);
pinCharen = ((val & 0x04) != 0) || ((portDir & 0x04) == 0);
unusedPin0 = ((val & 0x40) != 0);
unusedPin1 = ((val & 0x80) != 0);
@ -213,7 +213,7 @@ namespace BizHawk.Emulation.Computers.Commodore64.MOS
private void SetPortDir(byte val)
{
portDir = val;
//SetPortData((byte)(PortData | ((byte)~val & 0x1F)));
SetPortData(PortData);
}
// ------------------------------------