64 lines
2.0 KiB
TypeScript
64 lines
2.0 KiB
TypeScript
import { DriveNumber, NibbleDisk, WozDisk } from '../../formats/types';
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import { ControllerState, DiskDriver, Drive, DriverState } from './types';
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/**
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* Common logic for both `NibbleDiskDriver` and `WozDiskDriver`.
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*/
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export abstract class BaseDiskDriver implements DiskDriver {
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constructor(
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protected readonly driveNo: DriveNumber,
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protected readonly drive: Drive,
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protected readonly disk: NibbleDisk | WozDisk,
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protected readonly controller: ControllerState) { }
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/** Called frequently to ensure the disk is spinning. */
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abstract tick(): void;
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/** Called when Q6 is set LOW. */
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abstract onQ6Low(): void;
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/** Called when Q6 is set HIGH. */
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abstract onQ6High(readMode: boolean): void;
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/**
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* Called when drive is turned on. This is guaranteed to be called
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* only when the associated drive is toggled from off to on. This
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* is also guaranteed to be called when a new disk is inserted when
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* the drive is already on.
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*/
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abstract onDriveOn(): void;
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/**
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* Called when drive is turned off. This is guaranteed to be called
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* only when the associated drive is toggled from on to off.
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*/
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abstract onDriveOff(): void;
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debug(..._args: unknown[]) {
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// debug(...args);
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}
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/**
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* Called every time the head moves to clamp the track to a valid
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* range.
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*/
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abstract clampTrack(): void;
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/** Returns `true` if the controller is on and this drive is selected. */
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isOn(): boolean {
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return this.controller.on && this.controller.driveNo === this.driveNo;
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}
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/** Returns `true` if the drive's write protect switch is enabled. */
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isWriteProtected(): boolean {
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return this.drive.readOnly;
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}
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/** Returns the current state of the driver as a serializable object. */
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abstract getState(): DriverState;
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/** Sets the state of the driver from the given `state`. */
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abstract setState(state: DriverState): void;
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}
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