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File name Lisa_MRD_Apr80.pdf

LISA MRD/PRD AMENDMENTS I. ADDITIONAL LISA MRDS Some areas covered in the MRD will adhere to the direction stated but will be subject to change until detailed, separate MRDs are prepared for each one. These areas, and the target completion date for each, are as follows: 1. USER INTERFACE May 31, 1980 2. SOFTWARE THEFT PROTECTION May 31, 1980 3. USER SET-UP AND CUSTOMIZING June 30, 1980 4. TERMINAL EMULATION June 30, 1980 5. VISICABINET June 30, 1980 6. WORD PROCESSOR June 30, 1980 7. GRAPHICS EDITOR June 30, 1980 8. PERSONAL APPLICATIONS June 30, 1980 9. MASS STORAGE PERIPHERALS June 30, 1980 10. PRINTERS June 30, 1980 11. NETWORKING AND ELECTRONIC MAIL July 31, 1980 12. DIAGNOSTICS/TESTING July 31, 1980 13. BUSINESS GRAPHICS July 31, 1980 14. INTRODUCTORY INTERACTIVE MANUAL August 31, 1980 15. 'OEM PRODUCTS (DEVELOPMENT TOOLS) August 31, 1980 II. HARDWARE ENGINEERING AMENDMENTS 1. Both Alps and Keyboard Co. (bucket) keyswitches will be pursued as potential options at introduction. Other keyboard technologies will be investigated in parallel but may not be available at introduction. If a better alternative does turn up, it could be made available within a few months of introduction, either as a standard keyboard or as an option. Although the keyboard layout is nearly final, it has not frozen since it is not yet on the critical path. One remaining potential variation is the possible removal of the cursor cluster from the layout. 2. Engineering is concerned that the current cost objectives may not be feasible. 3. Although there is no requirement to have the Problem Analysis Guide (PAG) stowed within LISA, Engineering will continue to pursue methods by which the PAG may be attached to the main unit. 4. The current display has a refresh rate of 59.2 Hz, which violates the requirement of being within 1% of 60 Hz. Engineering will arrange for a side-by-side demonstration of the 59.2 Hz display against an identical 60 Hz display to see if the 59.2 version meets the product's requirement. III. SOFTWARE ENGINEERING AMENDMENTS I.' It is too early to tell Whether or not it will be possible to provide the level of integration and software sophistication desired on a 128K LISA. Future MRDs and performance analyses will resolve this issue. 2. Visicalc capabilities will be either built-into the File Cabinet to create the ''VISICABINET'' concept, or created as a separate product. This concern will be resolved in the VISICABINET MRD. 3. Implementation details of the user interface may have a significant impact on performance and product schedules