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Use random values for memory holes at $xx28, $xx29, $xx68, $xx69 in MIP_FF_FF_00_00

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This commit is contained in:
michaelangel007 2014-07-15 21:14:05 -07:00
parent 5109fd39da
commit 9c186199c2
1 changed files with 12 additions and 9 deletions
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21
source/Memory.cpp
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@ -1393,14 +1393,18 @@ void MemReset ()
switch( g_eMemoryInitPattern )
{
case MIP_FF_FF_00_00:
for( iByte = 0x0000; iByte < 0xC000; )
for( iByte = 0x0000; iByte < 0xC000; iByte += 4 ) // NB. ODD 16-bit words are zero'd above...
{
memmain[ iByte++ ] = 0xFF;
memmain[ iByte++ ] = 0xFF;
memmain[ iByte+0 ] = 0xFF;
memmain[ iByte+1 ] = 0xFF;
}
// Note: ODD 16-bit words are zero'd above...
iByte++;
iByte++;
for( iByte = 0x0000; iByte < 0xC000; iByte += 512 )
{
memmain[ iByte + 0x28 ] = MemReturnRandomData( 1 );
memmain[ iByte + 0x29 ] = MemReturnRandomData( 0 );
memmain[ iByte + 0x68 ] = MemReturnRandomData( 1 );
memmain[ iByte + 0x69 ] = MemReturnRandomData( 0 );
}
break;
@ -1441,10 +1445,9 @@ void MemReset ()
// https://github.com/AppleWin/AppleWin/issues/206
// Work-around for a cold-booting bug in "Pooyan" which expects RNDL and RNDH to be non-zero.
// TODO: Use MemReturnRandomData() ???
DWORD clock = timeGetTime(); // We can't use g_nCumulativeCycles as it will be zero on a fresh execution.
memmain[ 0x4E ] = (clock >> 0) & 0xFF;
memmain[ 0x4F ] = (clock >> 8) & 0xFF;
memmain[ 0x4E ] = MemReturnRandomData(1) | (clock >> 0) & 0xFF;
memmain[ 0x4F ] = MemReturnRandomData(1) | (clock >> 8) & 0xFF;
// SET UP THE MEMORY IMAGE
mem = memimage;