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Fixed MDM bankswitch bug; it was only looking for addresses below $C00, 

and ignoring mirrored addresses.


git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@3225 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
This commit is contained in:
stephena 2015-10-11 14:51:50 +00:00
parent f5eca188ce
commit c4b94f008d
1 changed files with 4 additions and 4 deletions
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8
src/emucore/CartMDM.cxx
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@ -71,7 +71,7 @@ void CartridgeMDM::install(System& system)
// Set the page accessing methods for the hot spots // Set the page accessing methods for the hot spots
System::PageAccess access(this, System::PA_READWRITE); System::PageAccess access(this, System::PA_READWRITE);
for(uInt32 i = 0x0800; i < 0x0FFF; i += (1 << System::PAGE_SHIFT)) for(uInt32 i = 0x0800; i < 0x0BFF; i += (1 << System::PAGE_SHIFT))
mySystem->setPageAccess(i >> System::PAGE_SHIFT, access); mySystem->setPageAccess(i >> System::PAGE_SHIFT, access);
// Install pages for bank 0 // Install pages for bank 0
@ -82,8 +82,8 @@ void CartridgeMDM::install(System& system)
uInt8 CartridgeMDM::peek(uInt16 address) uInt8 CartridgeMDM::peek(uInt16 address)
{ {
// Because of the way we've set up accessing above, we can only // Because of the way we've set up accessing above, we can only
// get here when the addresses are from 0x800 - 0xFFF // get here when the addresses are from 0x800 - 0xBFF
if(address < 0xC00) if((address & 0xBFF) < 0xC00)
bank(address & 0x0FF); bank(address & 0x0FF);
int hotspot = ((address & 0x0F00) >> 8) - 8; int hotspot = ((address & 0x0F00) >> 8) - 8;
@ -97,7 +97,7 @@ bool CartridgeMDM::poke(uInt16 address, uInt8 value)
// about those below $1000 // about those below $1000
if(!(address & 0x1000)) if(!(address & 0x1000))
{ {
if(address < 0xC00) if((address & 0xBFF) < 0xC00)
bank(address & 0x0FF); bank(address & 0x0FF);
int hotspot = ((address & 0x0F00) >> 8) - 8; int hotspot = ((address & 0x0F00) >> 8) - 8;