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Implements test case. Failing at present, naturally.

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This commit is contained in:
Thomas Harte 2021-09-25 21:52:41 -04:00
parent acfaa016a0
commit 19dd2f92bd
1 changed files with 141 additions and 0 deletions
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141
OSBindings/Mac/Clock SignalTests/AmigaBlitterTests.mm
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@ -10,6 +10,8 @@
#include "Blitter.hpp"
#include <vector>
namespace Amiga {
/// An empty stub to satisfy Amiga::Blitter's inheritance from Amiga::DMADevice;
struct Chipset {};
@ -24,6 +26,145 @@ struct Chipset {};
uint16_t ram[512 * 1024]{};
Amiga::Chipset nonChipset;
Amiga::Blitter blitter(nonChipset, ram, 256 * 1024);
NSURL *const traceURL = [[NSBundle bundleForClass:[self class]] URLForResource:@"workbench13 boot logo" withExtension:@"json"];
NSData *const traceData = [NSData dataWithContentsOfURL:traceURL];
NSArray *const trace = [NSJSONSerialization JSONObjectWithData:traceData options:0 error:nil];
// Step 1 in developing my version of the Blitter is to make sure that I understand
// the logic; as a result the first implementation is going to be a magical thing that
// completes all Blits in a single cycle.
//
// Therefore I've had to bodge my way around the trace's record of reads and writes by
// accumulating all writes into a blob and checking them en massse at the end of a blit
// (as detected by any register work in between memory accesses, since Kickstart 1.3
// doesn't do anything off-book).
enum class State {
AwaitingWrites,
LoggingWrites
} state = State::AwaitingWrites;
std::vector<std::pair<uint32_t, uint16_t>> writes;
for(NSArray *const event in trace) {
NSString *const type = event[0];
const NSInteger param1 = [event[1] integerValue];
if([type isEqualToString:@"bltcon0"]) {
blitter.set_control(0, param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltcon1"]) {
blitter.set_control(1, param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltsize"]) {
blitter.set_size(param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltafwm"]) {
blitter.set_first_word_mask(param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltalwm"]) {
blitter.set_last_word_mask(param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltadat"]) {
blitter.set_data(0, param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltbdat"]) {
blitter.set_data(1, param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltcdat"]) {
blitter.set_data(2, param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltaptl"]) {
blitter.set_pointer<0, 0>(param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltbptl"]) {
blitter.set_pointer<1, 0>(param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltcptl"]) {
blitter.set_pointer<2, 0>(param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltdptl"]) {
blitter.set_pointer<3, 0>(param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltapth"]) {
blitter.set_pointer<0, 16>(param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltbpth"]) {
blitter.set_pointer<1, 16>(param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltcpth"]) {
blitter.set_pointer<2, 16>(param1);
state = State::AwaitingWrites;
continue;
}
if([type isEqualToString:@"bltdpth"]) {
blitter.set_pointer<3, 16>(param1);
state = State::AwaitingWrites;
continue;
}
// Hackaround for testing my magical all-at-once Blitter is here.
if(state == State::AwaitingWrites) {
for(const auto &write: writes) {
XCTAssertEqual(ram[write.first >> 1], write.second, @"Didn't find %04x at address %08x; found %04x instead", write.second, write.first, ram[write.first >> 1]);
// For now, indicate only the first failure.
if(ram[write.first >> 1] != write.second) {
break;
}
}
writes.clear();
state = State::LoggingWrites;
}
// Hack ends here.
if([type isEqualToString:@"cread"] || [type isEqualToString:@"bread"] || [type isEqualToString:@"aread"]) {
ram[param1 >> 1] = [event[2] integerValue];
continue;
}
if([type isEqualToString:@"write"]) {
writes.push_back(std::make_pair(uint32_t(param1), uint16_t([event[2] integerValue])));
continue;
}
NSLog(@"Unhandled type: %@", type);
XCTAssert(false);
break;
}
}
@end