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Inside CP/M
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Alteration of the CP/M-86 Operating System
CP/M-86 is a microcomputer (INTEL 8086) operating system developed and marketed by Digital Research. The operating system is designed so that a user can adapt the system to his own input/output hardware devices. This thesis develops interfaces to two floppy disk controllers, the iSBC 201 (single density) and the iSBC 202 (double density) controllers. The interface includes the writing of a boot loader embedded in the iSBC957 Execution Vehicle Monitor, the monitor system for the INTEL iSBC 86/12 single board computer. Also included is an interface module for the cold start loader (loader BIOS). A design for the interface module of typical systems based on Winchester technology hard disks is also presented. (Author).
Digital Research
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Alteration and Implementation of the CP/M-86 Operating System for a Multi-User Environment
CP/M-86 is a single user microcomputer operating system. This thesis provides a multi-user protected CP/M-86 based disk sharing environment consisting of four Intel iSBC 86/12A single board computers, a MMB-80 bubble memory, and the REMEX Data Warehouse 3200 memory storage unit. The REMEX houses a 14 inch Winchester hard disk and two flexible floppy disk drives providing in excess of 20 megabytes of data storage capacity. The major objective in the design of this system was to create a table-driven CP/M-86 Basic Input/Output System that could be quickly and easily reconfigured to adapt to any new hardware configuration. Once the system was operational, the REMEX hard disk could then serve as a signal processor emulation for the AEGIS system. By making direct calls to the appropriate read/write routines, stored radar data could be retrieved from the hard disk for use by the other system processes. (Author).
The Byte Guide to CP/M-86
Shows the Reader How to Build a Single-Board Microcomputer Based on the 8088 Microprocessor, Using the CP-M Operating System
Alteration and Implementation of the CP/M-86 Operating System for a Multi-User Environment
CP/M-86 is a single user microcomputer operating system. This thesis provides a multi-user protected CP/M-86 based disk sharing environment consisting of four Intel iSBC 86/12A single board computers, a MMB-80 bubble memory, and the REMEX Data Warehouse 3200 memory storage unit. The REMEX houses a 14 inch Winchester hard disk and two flexible floppy disk drives providing in excess of 20 megabytes of data storage capacity. The major objective in the design of this system was to create a table-driven CP/M-86 Basic Input/Output System that could be quickly and easily reconfigured to adapt to any new hardware configuration. Once the system was operational, the REMEX hard disk could then serve as a signal processor emulation for the AEGIS system. By making direct calls to the appropriate read/write routines, stored radar data could be retrieved from the hard disk for use by the other system processes. (Author).
CP/M-86 User's Guide
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