honeywell AL39 free download

File name AL39.pdf

HONEYWELL DPS/LEVEL 68 & DPS 8M MULTICS PROCESSOR MANUAL HARDWARE PREFACE This manual describes the processors used in the Multics system. These are the DPS/L68, which refers to the DPS, L68 or older model processors (excluding the GE-645) and DPS 8M, which refers to the DPS 8 family of Multics processors, i.e. DPS 8/70M, DPS 8/62M and DPS 8/52M. The reader should be familiar with the overall modular organization of the Multics system and with the philosophy of asynchronous operation. In addition, this manual presents a discussion of virtual memory addressing concepts including segmentation and paging. The manual is intended for use by systems programmers responsible for writing software to interface with the virtual memory hardware and with the fault and interrupt portions of the hardware. It should also prove valuable to programmers who must use machine instructions (particularly language translator implementors) and to those persons responsible for analyzing crash conditions in system dumps. This manual includes the processor capabilities, modes of operation, functions, and detailed descriptions of machine instructions. Data representation, program-addressable registers, addressing by means of segmentation and paging, faults and interrupts, hardware ring implementation, and cache operation are also covered. The information and specifications in this document are subject to change without notice. Consult your Honeywell Marketing Representative for product or service availability. 11/85