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Map shadowing by logical address, not physical.

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Disclaimer: although this better matches the tests, I've yet to verify.
This commit is contained in:
Thomas Harte 2022-06-29 06:10:15 -04:00
parent 60d3519993
commit 7cf9e08948
1 changed files with 3 additions and 2 deletions
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5
Machines/Apple/AppleIIgs/MemoryMap.hpp
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@ -565,7 +565,7 @@ class MemoryMap {
//
// Shadow_banks: divides the whole 16mb of memory into 128kb chunks and includes a flag to indicate whether
// each is a potential source of shadowing.
std::bitset<128> shadow_pages, shadow_banks;
std::bitset<128> shadow_pages{}, shadow_banks{};
std::array<Region, 40> regions; // An assert above ensures that this is large enough; there's no
// doctrinal reason for it to be whatever size it is now, just
@ -576,7 +576,8 @@ class MemoryMap {
// would be less efficient. Verify that?
#define MemoryMapRegion(map, address) map.regions[map.region_map[address >> 8]]
#define IsShadowed(map, region, address) (map.shadow_pages[((&region.write[address] - map.ram_base) >> 10) & 127] & map.shadow_banks[address >> 17])
//#define IsShadowed(map, region, address) (map.shadow_pages[((&region.write[address] - map.ram_base) >> 10) & 127] & map.shadow_banks[address >> 17])
#define IsShadowed(map, region, address) (map.shadow_pages[(address >> 10) & 127] & map.shadow_banks[address >> 17])
#define MemoryMapRead(region, address, value) *value = region.read ? region.read[address] : 0xff
#define MemoryMapWrite(map, region, address, value) \
if(region.write) { \