The System Manual of SOL-20 - History of Computers

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II. CONSOLE COMMANDS (cont.) Terminal Command TERM (port-I (port-O)) (Available under SOLOS only) This command causes the Sol system to become a video terminal for connection to an external computer or modem. This command begins by automatically setting the I/O pseudo ports to the specified values. An omitted port parameter will be set to 1. Execution then proceeds by sending all Sol keyboard entries (except cursor control) to the specified Output pseudo port. Any input available from the Input pseudo port will be processed by the SOLOS display driver. Example: Result: TERM Keyboard data will be sent to the serial port and all data from the serial port will appear on the display screen. Custom Command CUST name (addr) definition/removal When a non-SOLOS command is entered, a separate table of custom commands (in RAM) will be searched. The CUST command is used to enter and remove up to six custom command names from the custom command table. (Only the first two letters of the name are significant.) When the name (2 to 5 letters) specified by the CUST command is not already in the custom command table, a new custom command will be entered into the table having an execute address as specified. When the addr is not specified, the beginning address of SOLOS will be used. When the name specified on the CUST command already exists in the custom command table, this table entry will be replaced with an 'end-of-table' indicator. Therefore, not only will the specified name be removed, but any other custom command names following in the table will also be removed. Example: CUST BASIC 0 CUST ALS8 E060 Result: Two new custom commands are now known. ALS8 at location E060, and BASIC at location 0. 5
III. TAPE COMMANDS Tape commands are used to control the tape cassette recorders. In these commands, unit selection is optional, with a default selecting unit 1. When a unit is specified, however, it must be separated from the file identification name with a slash (/) and without spaces in between: e.g., TARGT/2. Tape Header At the start of each tape file is header information. This information includes the following data: name: type: addr: size: name of file, 5 ASCII characters or less number is specified by user at time file is created starting address of file number of data bytes in file XEQ addr: auto-execute address word (See Set Commands - Section IV) Error Messages Cassette error messages are printed in this format: "ERROR (name) (type) (addr) (size)" Reasons for an error message are: 1. bad read of file (tape error or CRC ERROR) 2. MODE (or Control-@) key used for escaping while reading a tape file 3. XEQ command given to a non-executable file. Tape Commands in Brief SOLOS has four tape commands. They are: GET (name (/unit) (addr)) SAVE name (/unit) addr1 addr2 (addr3) Get a file from tape to memory Save file XEQ (name (/unit) (addr)) Get, then execute, a file CAT (/unit) Catalog of tape files
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Sol SYSTEMS MANUAL, 6200 Hollis Str
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CONTENTS OUTILNE Detailed contents
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Sol TERMINAL COMPUTERTM FIGURE 7-5
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VIII THEORY OF OPERATION 8.1 INTROD
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The System Manual of SOL-20 - History of Computers

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