mirror of
https://github.com/whscullin/apple2js.git
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504 lines
20 KiB
TypeScript
504 lines
20 KiB
TypeScript
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/** @jest-environment jsdom */
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import Apple2IO from 'js/apple2io';
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import DiskII, { Callbacks } from 'js/cards/disk2';
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import CPU6502 from 'js/cpu6502';
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import { VideoModes } from 'js/videomodes';
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import { mocked } from 'ts-jest/utils';
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import { BYTES_BY_SECTOR_IMAGE, BYTES_BY_TRACK_IMAGE } from '../formats/testdata/16sector';
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jest.mock('js/apple2io');
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jest.mock('js/videomodes');
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type Phase = 0 | 1 | 2 | 3; // not exported from DiskII
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const STEPS_PER_TRACK = 4;
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const PHASES_PER_TRACK = 2;
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function setTrack(diskII: DiskII, track: number) {
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const initialState = diskII.getState();
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initialState.drives[0].track = track * STEPS_PER_TRACK;
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initialState.drives[0].phase = (track * PHASES_PER_TRACK) % 4 as Phase;
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diskII.setState(initialState);
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}
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function setWriteProtected(diskII: DiskII, isWriteProtected: boolean) {
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const initialState = diskII.getState();
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initialState.drives[0].readOnly = isWriteProtected;
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diskII.setState(initialState);
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}
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describe('DiskII', () => {
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const mockApple2IO = new Apple2IO({} as unknown as CPU6502, {} as unknown as VideoModes);
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const callbacks: Callbacks = {
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driveLight: jest.fn(),
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dirty: jest.fn(),
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label: jest.fn(),
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};
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beforeEach(() => {
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jest.resetAllMocks();
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});
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it('is constructable', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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expect(diskII).not.toBeNull();
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});
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it('round-trips the state when there are no changes', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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const state = diskII.getState();
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diskII.setState(state);
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expect(diskII.getState()).toEqual(state);
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});
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it('round-trips the state when there are changes', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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diskII.setBinary(2, 'BYTES_BY_SECTOR', 'po', BYTES_BY_SECTOR_IMAGE);
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const state = diskII.getState();
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// These are just arbitrary changes, not an exhaustive list of fields.
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state.drive = 2;
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state.skip = 1;
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state.latch = 0x42;
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state.on = true;
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state.writeMode = true;
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state.drives[1].tracks[14][12] = 0x80;
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state.drives[1].head = 1000;
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state.drives[1].phase = 3;
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diskII.setState(state);
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expect(diskII.getState()).toEqual(state);
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});
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it('calls all of the callbacks when state is restored', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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jest.resetAllMocks();
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const state = diskII.getState();
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diskII.setState(state);
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expect(callbacks.driveLight).toHaveBeenCalledTimes(2);
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expect(callbacks.driveLight).toHaveBeenCalledWith(1, false);
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expect(callbacks.driveLight).toHaveBeenCalledWith(2, false);
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expect(callbacks.label).toHaveBeenCalledTimes(2);
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expect(callbacks.label).toHaveBeenCalledWith(1, 'BYTES_BY_TRACK', undefined);
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expect(callbacks.label).toHaveBeenCalledWith(2, 'Disk 2', undefined);
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expect(callbacks.dirty).toHaveBeenCalledTimes(2);
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expect(callbacks.dirty).toHaveBeenCalledWith(1, true);
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expect(callbacks.dirty).toHaveBeenCalledWith(2, false);
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});
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describe('drive lights', () => {
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it('turns on drive light 1 when the motor is turned on', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.ioSwitch(0x89); // turn on the motor
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expect(callbacks.driveLight).toBeCalledTimes(1);
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expect(callbacks.driveLight).toBeCalledWith(1, true);
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});
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it('turns off drive light 1 when the motor is turned off', () => {
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jest.useFakeTimers();
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.ioSwitch(0x89); // turn on the motor
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mocked(callbacks.driveLight).mockReset();
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diskII.ioSwitch(0x88); // turn off the motor
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jest.runAllTimers();
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expect(callbacks.driveLight).toBeCalledTimes(1);
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expect(callbacks.driveLight).toBeCalledWith(1, false);
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jest.useRealTimers();
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});
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it('turns on drive light 2 when drive 2 is selected and the motor is turned on', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.ioSwitch(0x8B); // select drive 2
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diskII.ioSwitch(0x89); // turn on the motor
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expect(callbacks.driveLight).toBeCalledTimes(1);
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expect(callbacks.driveLight).toBeCalledWith(2, true);
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});
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it('turns off drive light 2 when drive 2 is selected and the motor is turned off', () => {
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jest.useFakeTimers();
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.ioSwitch(0x8B); // select drive 2
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diskII.ioSwitch(0x89); // turn on the motor
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mocked(callbacks.driveLight).mockReset();
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diskII.ioSwitch(0x88); // turn off the motor
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jest.runAllTimers();
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expect(callbacks.driveLight).toBeCalledTimes(1);
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expect(callbacks.driveLight).toBeCalledWith(2, false);
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jest.useRealTimers();
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});
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it('turns off drive light 1 and turns on drive light two when drive 2 is selected', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.ioSwitch(0x89); // turn on the motor
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diskII.ioSwitch(0x8B); // select drive 2
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expect(callbacks.driveLight).toBeCalledTimes(3);
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expect(callbacks.driveLight).toHaveBeenNthCalledWith(1, 1, true);
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expect(callbacks.driveLight).toHaveBeenNthCalledWith(2, 1, false);
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expect(callbacks.driveLight).toHaveBeenNthCalledWith(3, 2, true);
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});
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});
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describe('head positioning', () => {
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it('does not allow head positioning when the drive is off', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x83); // coil 1 on
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diskII.ioSwitch(0x80); // coil 0 off
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x82); // coil 1 off
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diskII.ioSwitch(0x84); // coil 2 off
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const state = diskII.getState();
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expect(state.drives[0].phase).toBe(0);
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expect(state.drives[0].track).toBe(0);
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});
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it('allows head positioning when the drive is on', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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diskII.ioSwitch(0x89); // turn on the motor
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x83); // coil 1 on
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diskII.ioSwitch(0x80); // coil 0 off
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x82); // coil 1 off
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diskII.ioSwitch(0x84); // coil 2 off
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const state = diskII.getState();
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expect(state.drives[0].phase).toBe(2);
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expect(state.drives[0].track).toBe(4);
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});
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it('moves the head to track 2 from track 0 when all phases are cycled', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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diskII.ioSwitch(0x89); // turn on the motor
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x83); // coil 1 on
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diskII.ioSwitch(0x80); // coil 0 off
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x82); // coil 1 off
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diskII.ioSwitch(0x87); // coil 3 on
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diskII.ioSwitch(0x84); // coil 2 off
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x86); // coil 3 off
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diskII.ioSwitch(0x80); // coil 0 off
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const state = diskII.getState();
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expect(state.drives[0].phase).toBe(0);
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expect(state.drives[0].track).toBe(2 * STEPS_PER_TRACK);
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});
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it('moves the head to track 10 from track 8 when all phases are cycled', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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setTrack(diskII, 8);
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diskII.ioSwitch(0x89); // turn on the motor
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x83); // coil 1 on
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diskII.ioSwitch(0x80); // coil 0 off
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x82); // coil 1 off
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diskII.ioSwitch(0x87); // coil 3 on
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diskII.ioSwitch(0x84); // coil 2 off
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x86); // coil 3 off
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diskII.ioSwitch(0x80); // coil 0 off
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const state = diskII.getState();
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expect(state.drives[0].phase).toBe(0);
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expect(state.drives[0].track).toBe(10 * STEPS_PER_TRACK);
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});
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it('stops the head at track 34', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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setTrack(diskII, 33);
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diskII.ioSwitch(0x89); // turn on the motor
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x87); // coil 3 on
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diskII.ioSwitch(0x84); // coil 2 off
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x86); // coil 3 off
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diskII.ioSwitch(0x83); // coil 1 on
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diskII.ioSwitch(0x80); // coil 0 off
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x87); // coil 3 on
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diskII.ioSwitch(0x84); // coil 2 off
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x86); // coil 3 off
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diskII.ioSwitch(0x80); // coil 0 off
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const state = diskII.getState();
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expect(state.drives[0].phase).toBe(0);
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// The emulated Disk II puts data for track n on the
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// 4 quarter-tracks starting with n * STEPS_PER_TRACK.
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// On a real Disk II, the data would likely be on 3
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// quarter-tracks starting with n * STEPS_PER_TRACK - 1,
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// leaving 1 essentially blank quarter track at the
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// half-track.
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expect(state.drives[0].track).toBe(35 * STEPS_PER_TRACK - 1);
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});
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it('moves a half track when only one phase is activated', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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setTrack(diskII, 15);
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diskII.ioSwitch(0x89); // turn on the motor
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x87); // coil 3 on
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diskII.ioSwitch(0x84); // coil 2 off
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diskII.ioSwitch(0x86); // coil 3 off
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const state = diskII.getState();
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expect(state.drives[0].phase).toBe(3);
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expect(state.drives[0].track).toBe(15 * STEPS_PER_TRACK + 2);
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});
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it('moves backward one track when phases are cycled in reverse', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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setTrack(diskII, 15);
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diskII.ioSwitch(0x89); // turn on the motor
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x83); // coil 1 on
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diskII.ioSwitch(0x84); // coil 2 off
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x82); // coil 1 off
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diskII.ioSwitch(0x80); // coil 0 off
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const state = diskII.getState();
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expect(state.drives[0].phase).toBe(0);
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expect(state.drives[0].track).toBe(14 * STEPS_PER_TRACK);
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});
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it('moves backward two tracks when all phases are cycled in reverse', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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setTrack(diskII, 15);
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diskII.ioSwitch(0x89); // turn on the motor
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x83); // coil 1 on
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diskII.ioSwitch(0x84); // coil 2 off
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x82); // coil 1 off
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diskII.ioSwitch(0x87); // coil 3 on
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diskII.ioSwitch(0x80); // coil 0 off
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x86); // coil 3 off
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diskII.ioSwitch(0x84); // coil 2 off
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const state = diskII.getState();
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expect(state.drives[0].phase).toBe(2);
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expect(state.drives[0].track).toBe(13 * STEPS_PER_TRACK);
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});
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it('does not move backwards past track 0', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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setTrack(diskII, 1);
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diskII.ioSwitch(0x89); // turn on the motor
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x83); // coil 1 on
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diskII.ioSwitch(0x84); // coil 2 off
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diskII.ioSwitch(0x81); // coil 0 on
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diskII.ioSwitch(0x82); // coil 1 off
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diskII.ioSwitch(0x87); // coil 3 on
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diskII.ioSwitch(0x80); // coil 0 off
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x86); // coil 3 off
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diskII.ioSwitch(0x84); // coil 2 off
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const state = diskII.getState();
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expect(state.drives[0].phase).toBe(2);
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expect(state.drives[0].track).toBe(0);
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});
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it('moves backward one half track', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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setTrack(diskII, 15);
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diskII.ioSwitch(0x89); // turn on the motor
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diskII.ioSwitch(0x85); // coil 2 on
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diskII.ioSwitch(0x83); // coil 1 on
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diskII.ioSwitch(0x84); // coil 2 off
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diskII.ioSwitch(0x82); // coil 1 off
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const state = diskII.getState();
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expect(state.drives[0].phase).toBe(1);
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expect(state.drives[0].track).toBe(14.5 * STEPS_PER_TRACK);
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});
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// The emulated Disk II is not able to step quarter tracks because
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// it does not track when phases are turned off.
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// eslint-disable-next-line jest/no-disabled-tests
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it.skip('moves a quarter track when two neighboring phases are activated and held', () => {
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const diskII = new DiskII(mockApple2IO, callbacks);
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diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
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setTrack(diskII, 15);
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||
|
diskII.ioSwitch(0x89); // turn on the motor
|
||
|
diskII.ioSwitch(0x85); // coil 2 on
|
||
|
diskII.ioSwitch(0x87); // coil 3 on
|
||
|
|
||
|
const state = diskII.getState();
|
||
|
expect(state.drives[0].phase).toBe(3);
|
||
|
expect(state.drives[0].track).toBe(15 * STEPS_PER_TRACK + 1);
|
||
|
});
|
||
|
|
||
|
// The emulated Disk II is not able to step quarter tracks because
|
||
|
// it does not track when phases are turned off.
|
||
|
// eslint-disable-next-line jest/no-disabled-tests
|
||
|
it.skip('moves backward one quarter track', () => {
|
||
|
const diskII = new DiskII(mockApple2IO, callbacks);
|
||
|
diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
|
||
|
setTrack(diskII, 15);
|
||
|
|
||
|
diskII.ioSwitch(0x89); // turn on the motor
|
||
|
diskII.ioSwitch(0x85); // coil 2 on
|
||
|
diskII.ioSwitch(0x83); // coil 1 on
|
||
|
|
||
|
const state = diskII.getState();
|
||
|
expect(state.drives[0].phase).toBe(1);
|
||
|
expect(state.drives[0].track).toBe(14.25 * STEPS_PER_TRACK);
|
||
|
});
|
||
|
});
|
||
|
|
||
|
describe('reading nibble-based disks', () => {
|
||
|
it('spins the disk', () => {
|
||
|
const diskII = new DiskII(mockApple2IO, callbacks);
|
||
|
diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
|
||
|
|
||
|
diskII.ioSwitch(0x89); // turn on the motor
|
||
|
diskII.ioSwitch(0x8e); // read mode
|
||
|
|
||
|
// Just check for changing nibbles
|
||
|
let spinning = false;
|
||
|
const firstNibble = diskII.ioSwitch(0x8c); // read data
|
||
|
for (let i = 0; i < 512; i++) {
|
||
|
const thisNibble = diskII.ioSwitch(0x8c); // read data
|
||
|
if (thisNibble >= 0x80 && firstNibble !== thisNibble) {
|
||
|
spinning = true;
|
||
|
}
|
||
|
}
|
||
|
expect(spinning).toBeTruthy();
|
||
|
});
|
||
|
|
||
|
it('after reading the data, the data register is set to zero', () => {
|
||
|
const diskII = new DiskII(mockApple2IO, callbacks);
|
||
|
diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
|
||
|
|
||
|
diskII.ioSwitch(0x89); // turn on the motor
|
||
|
diskII.ioSwitch(0x8e); // read mode
|
||
|
|
||
|
// Find address field prolog
|
||
|
let nibble = diskII.ioSwitch(0x8c); // read data
|
||
|
for (let i = 0; i < 512 && nibble !== 0xD5; i++) {
|
||
|
nibble = diskII.ioSwitch(0x8c); // read data
|
||
|
}
|
||
|
expect(nibble).toBe(0xD5);
|
||
|
nibble = diskII.ioSwitch(0x8c); // read data
|
||
|
// expect next read to be a zero because the sequencer is waiting
|
||
|
// for data
|
||
|
expect(nibble).toBe(0x00);
|
||
|
});
|
||
|
|
||
|
it('after reading the data, then zero, there is new data', () => {
|
||
|
const diskII = new DiskII(mockApple2IO, callbacks);
|
||
|
diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
|
||
|
|
||
|
diskII.ioSwitch(0x89); // turn on the motor
|
||
|
diskII.ioSwitch(0x8e); // read mode
|
||
|
|
||
|
// Find address field prolog
|
||
|
let nibble = diskII.ioSwitch(0x8c); // read data
|
||
|
for (let i = 0; i < 512 && nibble !== 0xD5; i++) {
|
||
|
nibble = diskII.ioSwitch(0x8c); // read data
|
||
|
}
|
||
|
expect(nibble).toBe(0xD5);
|
||
|
nibble = diskII.ioSwitch(0x8c); // read data
|
||
|
// expect next read to be a zero
|
||
|
expect(nibble).toBe(0x00);
|
||
|
// expect next read to be new data
|
||
|
nibble = diskII.ioSwitch(0x8c); // read data
|
||
|
expect(nibble).toBe(0xAA);
|
||
|
});
|
||
|
|
||
|
it('read write protect status', () => {
|
||
|
const diskII = new DiskII(mockApple2IO, callbacks);
|
||
|
diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
|
||
|
setWriteProtected(diskII, true);
|
||
|
|
||
|
diskII.ioSwitch(0x89); // turn on the motor
|
||
|
diskII.ioSwitch(0x8E); // read mode
|
||
|
diskII.ioSwitch(0x8D); // read write protect if read
|
||
|
const isWriteProtected = diskII.ioSwitch(0x8E); // read data
|
||
|
|
||
|
expect(isWriteProtected).toBe(0xff);
|
||
|
});
|
||
|
});
|
||
|
|
||
|
describe('writing nibble-based disks', () => {
|
||
|
it('writes a nibble to the disk', () => {
|
||
|
const diskII = new DiskII(mockApple2IO, callbacks);
|
||
|
diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
|
||
|
let track0 = diskII.getState().drives[0].tracks[0];
|
||
|
expect(track0[0]).toBe(0xFF);
|
||
|
|
||
|
diskII.ioSwitch(0x89); // turn on the motor
|
||
|
diskII.ioSwitch(0x8F, 0x80); // write
|
||
|
diskII.ioSwitch(0x8C); // shift
|
||
|
|
||
|
track0 = diskII.getState().drives[0].tracks[0];
|
||
|
expect(track0[0]).toBe(0x80);
|
||
|
});
|
||
|
|
||
|
it('writes two nibbles to the disk', () => {
|
||
|
const diskII = new DiskII(mockApple2IO, callbacks);
|
||
|
diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
|
||
|
let track0 = diskII.getState().drives[0].tracks[0];
|
||
|
expect(track0[0]).toBe(0xFF);
|
||
|
|
||
|
diskII.ioSwitch(0x89); // turn on the motor
|
||
|
diskII.ioSwitch(0x8F, 0x80); // write
|
||
|
diskII.ioSwitch(0x8C); // shift
|
||
|
diskII.ioSwitch(0x8F, 0x81); // write
|
||
|
diskII.ioSwitch(0x8C); // shift
|
||
|
|
||
|
track0 = diskII.getState().drives[0].tracks[0];
|
||
|
expect(track0[0]).toBe(0x80);
|
||
|
expect(track0[1]).toBe(0x81);
|
||
|
});
|
||
|
});
|
||
|
});
|