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Adds an IN/OUT test.

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This commit is contained in:
Thomas Harte 2021-04-13 17:55:51 -04:00
parent 06f1e64177
commit 8a3bfb8672
1 changed files with 40 additions and 3 deletions
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43
OSBindings/Mac/Clock SignalTests/Z80ContentionTests.mm
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@ -131,6 +131,7 @@ struct CapturingZ80: public CPU::Z80::BusHandler {
struct ContentionCheck {
uint16_t address;
int length;
bool is_io = false;
};
- (void)compareExpectedContentions:(const std::initializer_list<ContentionCheck> &)contentions found:(const std::vector<ContentionCheck> &)found label:(const char *)label {
@ -142,6 +143,7 @@ struct ContentionCheck {
while(contention != contentions.end() && found_contention != found.end()) {
XCTAssertEqual(contention->address, found_contention->address, "[%s] mismatched address at step %zu; expected %04x but found %04x", label, contention - contentions.begin(), contention->address, found_contention->address);
XCTAssertEqual(contention->length, found_contention->length, "[%s] mismatched length at step %zu; expected %d but found %d", label, contention - contentions.begin(), contention->length, found_contention->length);
XCTAssertEqual(contention->is_io, found_contention->is_io, "[%s] mismatched IO flag at step %zu; expected %d but found %d", label, contention - contentions.begin(), contention->is_io, found_contention->is_io);
if(contention->address != found_contention->address || contention->length != found_contention->length) {
break;
@ -164,26 +166,32 @@ struct ContentionCheck {
int count = 0;
uint16_t address = bus_records.front().address;
bool is_io = false;
for(size_t c = 0; c < bus_records.size(); c++) {
++count;
if(
c && // i.e. not at front.
!bus_records[c].mreq // i.e. beginning of a new contention.
!bus_records[c].mreq && // i.e. beginning of a new contention.
!bus_records[c].ioreq // i.e. not during an IO cycle.
) {
found_contentions.emplace_back();
found_contentions.back().address = address;
found_contentions.back().length = count - 1;
found_contentions.back().is_io = is_io;
count = 1;
address = bus_records[c].address;
}
is_io = bus_records[c].ioreq;
}
found_contentions.emplace_back();
found_contentions.back().address = address;
found_contentions.back().length = count;
found_contentions.back().is_io = is_io;
[self compareExpectedContentions:contentions found:found_contentions label:"48kb"];
}
@ -199,27 +207,35 @@ struct ContentionCheck {
int count = 0;
uint16_t address = bus_records.front().address;
bool is_io = false;
for(size_t c = 0; c < bus_records.size(); c += 2) {
++count;
const bool is_leading_edge = !bus_records[c].mreq && bus_records[c+1].mreq && !bus_records[c].refresh;
// The IOREQ test below is a little inauthentic; it's included to match the published Spectrum
// tables, even though the +3 doesn't contend IO.
const bool is_mreq_leading_edge = !bus_records[c].mreq && bus_records[c+1].mreq && !bus_records[c].refresh;
const bool is_ioreq_leading_edge = c < bus_records.size() - 2 && !bus_records[c].ioreq && bus_records[c+2].ioreq;
if(
c && // i.e. not at front.
is_leading_edge // i.e. beginning of a new contention.
(is_mreq_leading_edge || is_ioreq_leading_edge) // i.e. beginning of a new contention.
) {
found_contentions.emplace_back();
found_contentions.back().address = address;
found_contentions.back().length = count - 1;
found_contentions.back().is_io = is_io;
count = 1;
address = bus_records[c].address;
}
is_io = bus_records[c].ioreq;
}
found_contentions.emplace_back();
found_contentions.back().address = address;
found_contentions.back().length = count;
found_contentions.back().is_io = is_io;
[self compareExpectedContentions:contentions found:found_contentions label:"+3"];
}
@ -1131,4 +1147,25 @@ struct ContentionCheck {
}
}
- (void)testINOUTA {
for(const auto &sequence : std::vector<std::vector<uint8_t>>{
{0xdb, 0xef}, // IN A, (n)
{0xd3, 0xef}, // OUT (n), A
}) {
CapturingZ80 z80(sequence);
z80.run_for(11);
[self validate48Contention:{
{initial_pc, 4},
{initial_pc+1, 3},
{0x80ef, 4, true},
} z80:z80];
[self validatePlus3Contention:{
{initial_pc, 4},
{initial_pc+1, 3},
{0x80ef, 4, true},
} z80:z80];
}
}
@end