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Adds passing test of basic $00 -> $01 -> $e1 shadowing.

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This commit is contained in:
Thomas Harte 2020-12-06 21:19:38 -05:00
parent 9b73331ee9
commit fd3760cedc
1 changed files with 36 additions and 14 deletions
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50
OSBindings/Mac/Clock SignalTests/IIgsMemoryMapTests.mm
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@ -43,13 +43,13 @@ namespace {
- (void)testHigherRAM {
// Fill memory via the map.
for(int address = 0x020000; address < 0x800000; ++address) {
for(int address = 0x02'0000; address < 0x80'0000; ++address) {
const uint8_t value = uint8_t(address ^ (address >> 8));
[self write:value address:address];
}
// Test by direct access.
for(int address = 0x020000; address < 0x800000; ++address) {
for(int address = 0x02'0000; address < 0x80'0000; ++address) {
const uint8_t value = uint8_t(address ^ (address >> 8));
XCTAssertEqual([self readAddress:address], value);
}
@ -59,31 +59,53 @@ namespace {
_rom[0] = 0xc0;
// Test that ROM can be read in the correct location.
XCTAssertEqual([self readAddress:0xfc0000], 0xc0);
XCTAssertEqual([self readAddress:0xfc'0000], 0xc0);
// Try writing to it, and check that nothing happened.
[self write:0xfc address:0xfc0000];
[self write:0xfc address:0xfc'0000];
XCTAssertEqual(_rom[0], 0xc0);
}
- (void)testROM {
/// Tests that the same portion of ROM is visible in banks $00, $01, $e0 and $e1.
- (void)testROMVisibility {
_rom.back() = 0xa8;
auto test_bank = [self](uint32_t bank) {
const uint32_t address = bank | 0x00ffff;
const uint32_t address = bank | 0xffff;
XCTAssertEqual([self readAddress:address], 0xa8);
};
test_bank(0x000000);
test_bank(0x010000);
test_bank(0xe00000);
test_bank(0xe10000);
test_bank(0x00'0000);
test_bank(0x01'0000);
test_bank(0xe0'0000);
test_bank(0xe1'0000);
}
/// Tests that writes to $00:$0400 and to $01:$0400 are subsequently visible at $e0:$0400 and $e1:$0400.
- (void)testShadowing {
[self write:0xab address:0x000400];
[self write:0xcd address:0x010400];
XCTAssertEqual([self readAddress:0xe00400], 0xab);
XCTAssertEqual([self readAddress:0xe10400], 0xcd);
[self write:0xab address:0x00'0400];
[self write:0xcd address:0x01'0400];
XCTAssertEqual([self readAddress:0xe0'0400], 0xab);
XCTAssertEqual([self readAddress:0xe1'0400], 0xcd);
}
/// Tests that a write to bank $00 which via the auxiliary switches is redirected to bank $01 is then
/// mirrored to $e1.
- (void)testAuxiliaryShadowing {
// Select the alternate text page 1.
_memoryMap.access(0xc001, false); // Set 80STORE.
_memoryMap.access(0xc055, false); // Set PAGE2.
// These two things together should enable auxiliary memory for text page 1.
// No, really.
// Enable shadowing of text page 1.
_memoryMap.set_shadow_register(0x00);
// Establish a different value in bank $e1, then write
// to bank $00 and check bank $e1.
[self write: 0xcb address:0xe1'0400];
[self write: 0xde address:0x00'0400];
XCTAssertEqual([self readAddress:0xe1'0400], 0xde);
}
@end