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

commodore64: PRG loading more permissive (fixes some crack intros in PRG format- anything reasonable should boot)

This commit is contained in:
saxxonpike 2012-11-07 19:13:44 +00:00
parent bae5c32915
commit f94a1ba798
1 changed files with 21 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
BizHawk.Emulation/Computers/Commodore64/PRGFile.cs
View File

@ -52,16 +52,33 @@ namespace BizHawk.Emulation.Computers.Commodore64
//mem[0x0277] = 0x0D;
//mem[0x0278] = 0x0D;
if (data[0x05] == 0x00 && data[0x06] == 0x9E)
if (data[0x06] == 0x9E)
{
// sys command
bool isNumber = false;
int sysAddress = 0;
int sysIndex = 0x07;
while (data[sysIndex] != 0)
{
sysAddress *= 10;
sysAddress += (data[sysIndex] & 0xF);
sysIndex++;
if (!isNumber)
{
if (data[sysIndex] >= 0x30 && data[sysIndex] <= 0x39)
{
isNumber = true;
}
else
{
sysIndex++;
}
}
if (isNumber)
{
sysAddress *= 10;
sysAddress += (data[sysIndex] & 0xF);
sysIndex++;
if (data[sysIndex] < 0x30 || data[sysIndex] > 0x39)
break;
}
}
if (sysAddress > 0 && sysAddress < 0x10000)
{