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Sol-20 Manual Sol SYSTEMS MANUAL, 6200 Hollis Street Emeryville, CA. 94608 Phone: (415) 652-8080 Copyright 1976, 1977, Processor Technology Corporation Third Printing, June, 1977 Manual No.106000 PREFACE This new edition of the Sol Systems Manual contains many revisions and additions. Its release coincides with the release of a new "2708" Personality Module, and the Revision E version of the main circuit board: Sol-PC. The new "Sol-PC Rev E" has several improvements: resistors have been added which increase the reliability of the cassette motor relays, jumper options have been added, and traces moved to improve performance. Many improvements which had been accumulating as update information have been integrated into the text. Section VII, Operating Procedures, and Appendix 5, IC Pin Configurations, are now included. A subsection, Modification for 625 Line Video, has been added. If your copy is missing Section VIII, Theory of Operation, it will be available soon. New divider pages with plastic-coated tabs are included to make it easier to flip to frequently referenced sections. Much effort has gone towards making this manual complete and accurate. The process of updating and revision always continues, however, and we invite your input. If you should find an error, or have suggestions for improving any of our documentation, please submit your suggestions in writing to our Technical Documentation Department, and they will be given thorough consideration. The three-ring binder you are holding, is an "easel" binder. The cover is hinged from side to side, as well as down the bind- ing, so that it may form its own "easel" stand. To use this feature, lay the manual open on a table. Bend the full width of the manual along the creased hinge, until a resistance to further bending is felt. Then set the manual up on the table, with the bottom of the pages down against the table, and the top inclining away from you. It is supported from falling by the portion of the binder you have bent back. In this position your hands are free for building, making measurements, or troubleshooting. The first part of this manual you should read is at the very end: the Updates section. Integrate this information into your manual before you begin. CONTENTS OUTILNE Detailed contents precede each section. I INTRODUCTION and GENERAL INFORMATION II Sol POWER SUPPLY ASSEMBLY and TEST III Sol-PC ASSEMBLY and TEST IV PERSONALITY MODULE ASSEMBLY V KEYBOARD ASSEMBLY and TEST VI Sol CABINET-CHASSIS ASSEMBLY VII OPERATING PROCEDURES VIII THEORY OF OPERATION IX SOFTWARE X DRAWINGS APPENDICES UPDATES PROCESSOR TECHNOLOGY CORPORATION Sol TERMINAL COMPUTERTM LIST OF ILLUSTRATIONS FIGURE TITLE PAGE 2-1 sol-20 fan closure plate assembly ........ II-7 2-2 Coaxial cable preparation ............ II-9 2-3 Aluminum heat sink installation ......... II-12 2-4 Sol-10 power supply subchassis assembly ..... II-15 2-5 Sol-20 power supply subchassis assembly ..... II-16 2-6 Sol-PC power connector and voltage measurements . II-19 2-7 Sol-20 power connector and voltage measurements . II-19 3-1 Identification of components .......... III-5 3-2 Clock circuit waveforms ............. III-15 3-3 Test probe for Steps 16B and 25B ........ III-16 3-4 Coaxial cable preparation ............ III-19 3-5 Display section timing waveforms ........ III-21 3-6 Bending selected pins on U42, 59 and 75 ..... III-23 3-7 U14 through U21 socket jumpers ......... III-24 3-8 Display circuits test pattern .......... III-25 3-9 CPU Functional Test No. 1 display ........ III-29 3-10 CPU Functional Test No. 2 display ........ III-31 3-11 Personality module bracket/guide installation . III-31 4-l R1 through R4 installation ........... IV-4 4-2 Handle bracket (Sol-1045) installation ..... IV-5 6-l Types of screws used in Sol cabinet-chassis assembly .................... VI-4 6-2 Brackets used in Sol cabinet-chassis assembly . VI-4 6-3 Sol-20 with covers removed ........... VI-11 6-4 Sol-20 with covers removed ........... VI-11 6-5 Sol-PC coaxial cable connector assembly ..... VI-14 6-6 Backplane board (Sol-BPB) installation ..... VI-16 6-7 Backplane board (Sol-BPB) installation ..... VI-17 6-8 Protective foot pad installation ........ VI-20 7-l Connecting the basic Sol system ......... VII-6 7-2 Sol control switch settings for terminal mode . VII-7 7-3 Location Of positioning adjustments, VR1 and VR2 VII-8 PROCESSOR TECHNOLOGY CORPORATION Sol TERMINAL COMPUTERTM ILLUSTRATIONS/TABLES FIGURE TITLE PAGE 7-5 Connecting Sol to two cassette recorders . VII-29 7-6 Connecting Sol SDI to current loop device such as TTY VII-31 7-7 Connecting Sol SDI to communications modem . VII-31 7-8 Connecting Sol PDI to parallel device . VII-32 TABLE TITLE PAGE 2-1 Sol Regulator Parts List . II-2,3 2-2 Sol-10 Power Supply Parts List . II-4 2-3 Sol-20 Power Supply Parts List . II-4 3-1 Sol-PC Parts List . III-2,3,4 4-1 PM2708 Personality Module Parts List . IV-1 5-1 Sol Keyboard Parts List . V-2,3 6-l Sol-10 Cabinet-Chassis Parts List . VI-2 6-2 Sol-20 Cabinet-Chassis Parts List . VI-3 7-l Sol Operating Controls and Their Functions . VII-2 7-2 Baud Rate Selection with Switch S3 . VII-15 7-3 Word Length Selection with S4-2 & 3 . VII-15 7-4 Sol Keyboard Assignments . VII-18 7-5 Control Character Symbols and Definitions . VII-23 I INTRODUCTION and GENERAL INFORMATION 1.1 Introduction . I-1 1.2 General Information . I-2 1.2.1 Sol-PC Description . I-1 1.2.2 Receiving Inspection . I-2 1.2.3 Warranty Information . I-2 1.2.4 Replacement Parts . I-2 1.2.5 Factory Service . I-2 PROCESSOR TECHNOLOGY CORPORATION Sol-PC SINGLE BOARD TERMINAL COMPUTERTM SECTION I 1.1 INTRODUCTION This manual supplies the information needed to assemble, test and use the Sol-PC Single Board Terminal Computer. We suggest that you first scan the entire manual before starting assembly. Then make sure you have all the parts and components listed in the "Parts List" (Table 3-l) in Section III. When assembling the module, follow the instructions in the order given. Should you encounter any problem during assembly, call on us for help if necessary. If your completed module does not work pro- perly , recheck your assembly step by step. Most problems stem from poor soldering, backward installed components, and/or installing the wrong component. Once you are satisfied that the module is cor- rectly assembled, feel free to ask for our help. 1.2 GENERAL INFORMATION 1.2.1 Sol-PC Description The Sol-PC is a single board microcomputer/terminal built around an 8080 microprocessor. Support circuitry permits full im- plementation of every 8080 function. It features both parallel and serial communications inter- faces, a keyboard interface, an audio cassette interface, a video display generator, 1024 8-bit words of system RAM (random access memory), 1024 8-bit words of display RAM, and a plug-in personality module with up to 2048 bytes of ROM (read only memory) stored pro- gram, and bus compatibility with all Processor Technology hardware and firmware products. Power requirements for the Sol-PC are +5 V dc +-5% at 2.5 A, +12 V dc +-5% at 150 mA and -12 V dc +-5% at 200 mA. Parallel interfacing is eight bits each for input and output plus control handshaking signals, and the output bus is tristated TTL for bidirectional interfaces. The serial interface circuit in- cludes both asynchronous RS-232 and 20 mA current loop provisions, 75 to 9600 baud (switch selectable). Seven-level ASCII encoded, TTL keyboard interfacing re- quires a 2 to 10 usec strobe pulse after data is stable. The dual rate, 300 or 1200 bps (bits per second), audio cassette interface is program controlled and self clocking with phase-lock loop. It includes automatic level control in both the record and playback modes. Recording is CUTS/Byte standard compatible, asynchronously Manchester coded at 1200/2400 Hz or 600/1200 Hz. The video display circuitry generates sixteen 64 character lines from data stored in an on-card 1024 8-bit word display RAM. Alphanumeric and control characters (the full 128 upper and lower case plus control ASCII character set) are displayed black on white I-l PROCESSOR TECHNOLOGY CORPORATION Sol-PC SINGLE BOARD TERMINAL COMPUTERTM SECTION I or reverse (switch selectable). Solid video inversion cursors, with switch selectable blink, are programmable. The display output is standard EIA, 1.0 to 2.5 V p-p with composite negative sync, with a nominal bandwidth of 7 MHz. It can consequently be used to drive any standard video monitor. (A monochrome TV, converted for video input, can also be used. See Appendix VI.) Included on the card are 1024 words of static, low power sys- tem RAM capable of full speed operation and a plug-in personality module which contains the software control program. Three personality modules are available for Sol: CONSOLTM--allows simple terminal operations plus direct control of the basic computer functions for entering or examining data in any memory location, or executing a program stored at a known location in memory. SOLEDTM--allows advanced terminal operations with CONSOL plus screen, file and cassette tape editing/ transmission operations. SOLOSTM--allows full stand-alone terminal-computer operation. 1.2.2 Receiving Inspection When your kit arrives, examine the shipping container for signs of possible damage to the contents during transit. Then in- spect the contents for damage. (We suggest you save the shipping materials for use in returning the kit to Processor Technology should it become necessary to do so.) If your Sol-PC kit is damaged, please write us at once describing the condition so that we can take appropriate action.
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