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Alto II
Xerox Alto II Manuals
Manuals and User Guides for Xerox Alto II. We have
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Xerox Alto II manual available for free PDF download: Hardware Manual
Xerox Alto II Hardware Manual (82 pages)
A Personal Computer System Alto series
Brand:
Xerox
| Category:
Desktop
| Size: 6.57 MB
Table of Contents
Table of Contents
2
1 Introduction
3
2 Microprocessor
5
Arithmetic Section
5
Constant Memory
9
Main Memory
9
Microprocessor Control
13
3 Emulator
16
Standard Instruction Set
16
Interrupts
32
Bootstrapping
35
Hardware
36
4 Display Controller
38
Programming Characteristics
38
Hardware
38
Display Controller Microcode
39
Cursor
40
5 Miscellaneous Peripherals
42
Keyboard
42
Mouse
43
Keyset
43
Parity Error Detection
46
6 Disk and Controller
50
Disk Controller Implementation
54
7 Ethernet
57
Programming Characteristics
57
Ethernet Hardware
60
Ethernet Microcode
60
8 Control RAM, ROM, and S Registers
65
RAM-Related Tasks
65
Processor Bus and ALU Interface
65
Microinstruction Bus Interface
66
Microinstruction Memory Banks
66
Standard Emulator Access
68
Interpretation of Emulator Traps
69
M and S Registers
69
Restrictions and Caveats
70
9 Nuts and Bolts for the Microcoder
72
Microcode Techniques Which Need Not be Rediscovered
72
Microinstruction Summary
76
Standard Reserved Memory Locations
77
100 C Standard Reservedsio (STARTF) Bits
78
Standard Tasks
78
S-Group Instruction Summary
79
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