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Correct comparison.

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This commit is contained in:
Thomas Harte 2022-06-26 21:49:58 -04:00
parent 1f7700edac
commit 686dccb48d
1 changed files with 24 additions and 4 deletions
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28
OSBindings/Mac/Clock SignalTests/IIgsMemoryMapTests.mm
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@ -273,15 +273,35 @@ namespace {
int physical = physicalStart;
for(int logical = logicalStart; logical < logicalEnd; logical++) {
const auto &region = _memoryMap.regions[_memoryMap.region_map[logical]];
XCTAssert(region.read != nullptr);
auto foundPhysical = int(&region.read[logical << 8] - _ram.data()) >> 8;
int foundPhysical = -1;
const uint8_t *const read_ptr = &region.read[logical << 8];
// Check for a mapping to RAM.
if(read_ptr >= _ram.data() && read_ptr < &(*_ram.end())) {
foundPhysical = int(&region.read[logical << 8] - _ram.data()) >> 8;
// This emulator maps a contiguous 8mb + 128kb of RAM such that the
// first 8mb resides up to physical location 0x8000, and the final
// 128kb sits from locatio 0xe000. So adjust for that here.
if(foundPhysical >= 0x8000) {
foundPhysical += 0xe000 - 0x8000;
}
}
// Check for a mapping to ROM.
if(read_ptr >= _rom.data() && read_ptr < &(*_rom.end())) {
// This emulator uses a separate store for ROM, which sholud appear in
// the memory map from locatio 0xfc00.
foundPhysical = 0xfc00 + (int(&region.read[logical << 8] - _rom.data()) >> 8);
}
// Compare to correct value.
XCTAssert(physical == foundPhysical,
@"Physical page %04x should be mapped to logical %04x; is instead %04x",
physical,
@"Logical page %04x should be mapped to physical %04x; is instead %04x",
logical,
physical,
foundPhysical);
if(physical != physicalEnd) ++physical;