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348 lines
10 KiB
Plaintext
348 lines
10 KiB
Plaintext
//
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// AmigaBlitterTests.m
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// Clock SignalTests
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//
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// Created by Thomas Harte on 25/09/2021.
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// Copyright © 2021 Thomas Harte. All rights reserved.
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//
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#import <XCTest/XCTest.h>
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#include "Blitter.hpp"
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#include "BlitterSequencer.hpp"
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#include "NSData+dataWithContentsOfGZippedFile.h"
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#include <unordered_map>
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#include <vector>
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namespace Amiga {
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/// An empty stub to satisfy Amiga::Blitter's inheritance from Amiga::DMADevice;
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struct Chipset {
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// Hyper ugliness: make a gross assumption about the effect of
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// the only call the Blitter will make into the Chipset, i.e.
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// that it will write something but do nothing more.
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//
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// Bonus ugliness: assume the real Chipset struct is 1kb in
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// size, at most.
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uint8_t _[1024];
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};
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};
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@interface AmigaBlitterTests: XCTestCase
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@end
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@implementation AmigaBlitterTests
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- (void)testCase:(NSString *)name capturedAllBusActivity:(BOOL)capturedAllBusActivity {
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uint16_t ram[256 * 1024]{};
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Amiga::Chipset nonChipset;
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Amiga::Blitter<true> blitter(nonChipset, ram, 256 * 1024);
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NSString *const tracePath = [[NSBundle bundleForClass:[self class]]
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pathForResource:name ofType:@"json.gz" inDirectory:@"Amiga Blitter Tests"];
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NSData *const traceData = [NSData dataWithContentsOfGZippedFile:tracePath];
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NSError *error;
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NSArray *const trace = [NSJSONSerialization JSONObjectWithData:traceData options:0 error:&error];
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XCTAssertNotNil(trace, @"JSON decoding failed with error %@", error);
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using TransactionType = Amiga::Blitter<true>::Transaction::Type;
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NSUInteger index = -1;
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for(NSArray *const event in trace) {
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NSString *const type = event[0];
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const NSInteger param1 = [event[1] integerValue];
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++index;
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//
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// Register writes. Pass straight along.
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//
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if(![type isEqualToString:@"cread"] && ![type isEqualToString:@"bread"] && ![type isEqualToString:@"aread"] && ![type isEqualToString:@"write"]) {
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// Ensure all blitting is completed between register writes; none of the tests
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// in this test set are about illegal usage.
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while(blitter.get_status() & 0x4000) {
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blitter.advance_dma<false>();
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}
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const auto transactions = blitter.get_and_reset_transactions();
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if(capturedAllBusActivity) {
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for(const auto &transaction: transactions) {
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if(transaction.type != TransactionType::SkippedSlot && transaction.type != TransactionType::WriteFromPipeline) {
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XCTAssert(false, "Unexpected transaction found at index %lu: %s", (unsigned long)index, transaction.to_string().c_str());
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return;
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}
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}
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}
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}
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if([type isEqualToString:@"bltcon0"]) {
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blitter.set_control(0, param1);
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continue;
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}
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if([type isEqualToString:@"bltcon1"]) {
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blitter.set_control(1, param1);
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continue;
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}
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if([type isEqualToString:@"bltsize"]) {
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blitter.set_size(param1);
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continue;
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}
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if([type isEqualToString:@"bltafwm"]) {
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blitter.set_first_word_mask(param1);
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continue;
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}
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if([type isEqualToString:@"bltalwm"]) {
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blitter.set_last_word_mask(param1);
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continue;
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}
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if([type isEqualToString:@"bltadat"]) {
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blitter.set_data(0, param1);
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continue;
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}
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if([type isEqualToString:@"bltbdat"]) {
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blitter.set_data(1, param1);
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continue;
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}
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if([type isEqualToString:@"bltcdat"]) {
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blitter.set_data(2, param1);
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continue;
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}
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if([type isEqualToString:@"bltamod"]) {
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blitter.set_modulo<0>(param1);
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continue;
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}
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if([type isEqualToString:@"bltbmod"]) {
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blitter.set_modulo<1>(param1);
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continue;
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}
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if([type isEqualToString:@"bltcmod"]) {
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blitter.set_modulo<2>(param1);
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continue;
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}
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if([type isEqualToString:@"bltdmod"]) {
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blitter.set_modulo<3>(param1);
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continue;
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}
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if([type isEqualToString:@"bltaptl"]) {
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blitter.set_pointer<0, 0>(param1);
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continue;
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}
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if([type isEqualToString:@"bltbptl"]) {
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blitter.set_pointer<1, 0>(param1);
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continue;
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}
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if([type isEqualToString:@"bltcptl"]) {
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blitter.set_pointer<2, 0>(param1);
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continue;
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}
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if([type isEqualToString:@"bltdptl"]) {
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blitter.set_pointer<3, 0>(param1);
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continue;
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}
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if([type isEqualToString:@"bltapth"]) {
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blitter.set_pointer<0, 16>(param1);
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continue;
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}
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if([type isEqualToString:@"bltbpth"]) {
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blitter.set_pointer<1, 16>(param1);
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continue;
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}
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if([type isEqualToString:@"bltcpth"]) {
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blitter.set_pointer<2, 16>(param1);
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continue;
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}
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if([type isEqualToString:@"bltdpth"]) {
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blitter.set_pointer<3, 16>(param1);
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continue;
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}
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//
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// Bus activity. Store as initial state, and translate for comparison.
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//
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Amiga::Blitter<true>::Transaction expected_transaction;
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expected_transaction.address = uint32_t(param1 >> 1);
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expected_transaction.value = uint16_t([event[2] integerValue]);
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if([type isEqualToString:@"cread"] || [type isEqualToString:@"bread"] || [type isEqualToString:@"aread"]) {
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XCTAssert(param1 < sizeof(ram) - 1);
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ram[param1 >> 1] = [event[2] integerValue];
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if([type isEqualToString:@"aread"]) expected_transaction.type = TransactionType::ReadA;
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if([type isEqualToString:@"bread"]) expected_transaction.type = TransactionType::ReadB;
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if([type isEqualToString:@"cread"]) expected_transaction.type = TransactionType::ReadC;
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} else if([type isEqualToString:@"write"]) {
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expected_transaction.type = TransactionType::AddToPipeline;
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} else {
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NSLog(@"Unhandled type: %@", type);
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XCTAssert(false);
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break;
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}
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// Loop until another [comparable] bus transaction appears, and test.
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while(true) {
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if(!(blitter.get_status() & 0x4000)) {
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XCTAssert(false, @"Blitter terminated early at index %lu; waiting for %s", (unsigned long)index, expected_transaction.to_string().c_str());
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return;
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}
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blitter.advance_dma<false>();
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const auto transactions = blitter.get_and_reset_transactions();
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if(transactions.empty()) {
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continue;
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}
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bool did_compare = false;
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for(const auto &transaction : transactions) {
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// Skipped slots and data coming out of the pipeline aren't captured
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// by the original test data.
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switch(transaction.type) {
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case TransactionType::SkippedSlot:
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case TransactionType::WriteFromPipeline:
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continue;
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default: break;
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}
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XCTAssertEqual(transaction.type, expected_transaction.type, @"Type mismatch at index %lu: %s expected vs %s found", (unsigned long)index, expected_transaction.to_string().c_str(), transaction.to_string().c_str());
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XCTAssertEqual(transaction.value, expected_transaction.value, @"Value mismatch at index %lu: %s expected vs %s found", (unsigned long)index, expected_transaction.to_string().c_str(), transaction.to_string().c_str());
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XCTAssertEqual(transaction.address, expected_transaction.address, @"Address mismatch at index %lu: %s expected vs %s found", (unsigned long)index, expected_transaction.to_string().c_str(), transaction.to_string().c_str());
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if(
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transaction.type != expected_transaction.type ||
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transaction.value != expected_transaction.value ||
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transaction.address != expected_transaction.address) {
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return;
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}
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did_compare = true;
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}
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if(did_compare) break;
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}
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}
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}
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- (void)testGadgetToggle {
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[self testCase:@"gadget toggle" capturedAllBusActivity:YES];
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}
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- (void)testIconHighlight {
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[self testCase:@"icon highlight" capturedAllBusActivity:NO];
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}
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- (void)testKickstart13BootLogo {
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[self testCase:@"kickstart13 boot logo" capturedAllBusActivity:YES];
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}
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- (void)testSectorDecode {
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[self testCase:@"sector decode" capturedAllBusActivity:YES];
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}
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- (void)testWindowDrag {
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[self testCase:@"window drag" capturedAllBusActivity:NO];
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}
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- (void)testWindowResize {
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[self testCase:@"window resize" capturedAllBusActivity:NO];
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}
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- (void)testRAMDiskOpen {
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[self testCase:@"RAM disk open" capturedAllBusActivity:NO];
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}
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- (void)testSpots {
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[self testCase:@"spots" capturedAllBusActivity:YES];
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}
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- (void)testClock {
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[self testCase:@"clock" capturedAllBusActivity:NO];
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}
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- (void)testInclusiveFills {
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[self testCase:@"inclusive fills" capturedAllBusActivity:YES];
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}
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- (void)testAddamsFamilyIntro {
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[self testCase:@"Addams Family Intro" capturedAllBusActivity:YES];
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}
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- (void)testSpindizzyWorlds {
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[self testCase:@"Spindizzy Worlds" capturedAllBusActivity:YES];
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}
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- (void)testSequencer {
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// These patterns are faithfully transcribed from the HRM's
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// 'Pipeline Register' section, as captured online at
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// http://www.amigadev.elowar.com/read/ADCD_2.1/Hardware_Manual_guide/node0127.html
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NSArray<NSString *> *const patterns = @[
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/* 0 */ @"- - - -",
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/* 1 */ @"D0 - D1 - D2",
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/* 2 */ @"C0 - C1 - C2",
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/* 3 */ @"C0 - - C1 D0 - C2 D1 - D2",
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/* 4 */ @"B0 - - B1 - - B2",
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/* 5 */ @"B0 - - B1 D0 - B2 D1 - D2",
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/* 6 */ @"B0 C0 - B1 C1 - B2 C2",
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/* 7 */ @"B0 C0 - - B1 C1 D0 - B2 C2 D1 - D2",
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/* 8 */ @"A0 - A1 - A2",
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/* 9 */ @"A0 - A1 D0 A2 D1 - D2",
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/* A */ @"A0 C0 A1 C1 A2 C2",
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/* B */ @"A0 C0 - A1 C1 D0 A2 C2 D1 - D2",
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/* C */ @"A0 B0 - A1 B1 - A2 B2",
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/* D */ @"A0 B0 - A1 B1 D0 A2 B2 D1 - D2",
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/* E */ @"A0 B0 C0 A1 B1 C1 A2 B2 C2",
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/* F */ @"A0 B0 C0 - A1 B1 C1 D0 A2 B2 C2 D1 D2",
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];
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for(int c = 0; c < 16; c++) {
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Amiga::BlitterSequencer sequencer;
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sequencer.set_control(c);
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sequencer.begin();
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int writes = 0;
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NSUInteger length = [[patterns[c] componentsSeparatedByString:@" "] count];
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bool is_first_write = c > 1; // control = 1 is D only, in which case don't pipeline.
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NSMutableArray<NSString *> *const components = [[NSMutableArray alloc] init];
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while(length--) {
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const auto next = sequencer.next();
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using Channel = Amiga::BlitterSequencer::Channel;
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switch(next.first) {
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case Channel::None: [components addObject:@"-"]; break;
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case Channel::A: [components addObject:[NSString stringWithFormat:@"A%d", next.second]]; break;
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case Channel::B: [components addObject:[NSString stringWithFormat:@"B%d", next.second]]; break;
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case Channel::C: [components addObject:[NSString stringWithFormat:@"C%d", next.second]]; break;
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case Channel::Write:
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case Channel::FlushPipeline:
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if(is_first_write) {
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is_first_write = false;
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[components addObject:@"-"];
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} else {
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[components addObject:[NSString stringWithFormat:@"D%d", writes++]];
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}
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break;
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default: break;
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}
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if(next.second == 2) {
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sequencer.complete();
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}
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}
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NSString *pattern = [components componentsJoinedByString:@" "];
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XCTAssertEqualObjects(
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pattern,
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patterns[c],
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@"Pattern didn't match for control value %x", c);
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}
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}
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@end
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