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[Disk] Simplify Seek Timing calculation at expense of accuracy

This commit is contained in:
LuigiBlood 2020-06-06 00:28:02 +02:00
parent cc2c4e8786
commit 737383b695
1 changed files with 8 additions and 17 deletions
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25
Source/Project64-core/N64System/Mips/Disk.cpp
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@ -108,7 +108,7 @@ void DiskCommand()
if (isSeek)
{
//Emulate Seek Times, send interrupt later
uint32_t seektime = 0x179200;
uint32_t seektime = 0;
//Start Motor, can take half a second, delay the response
if (g_Reg->ASIC_STATUS & DD_STATUS_MTR_N_SPIN)
@ -133,35 +133,26 @@ void DiskCommand()
}
}
//Add delay depending on the zone
//Add seek delay depending on the zone (this is inaccurate timing, but close enough)
seektime += 0x179200;
switch (zone)
{
case 0:
default:
break;
case 1:
seektime += 0x1900;
default:
seektime += track * 38;
break;
case 2:
seektime += 0x2A00;
break;
case 3:
seektime += 0x4500;
break;
case 4:
seektime += 0x5E00;
break;
case 5:
seektime += 0x7A00;
break;
case 6:
seektime += 0x9700;
break;
case 7:
seektime += 0xAF00;
seektime += 0x13C * 38 + (track - 0x13C) * 46;
break;
case 8:
seektime += 0xCC00;
seektime += 0x13C * 38 + 0x2E9 * 46 + (track - 0x425) * 58;
break;
}