Radio Shack TRS-80 4P Gate Array, Introduction Manual

Page 1: ...s Custom Manufactured in USA By RADIO SHACK A Division ol TANDY CORPORATION...

Page 2: ...er a portable version of the Model 4 is botn powerful and efficient Using your 4R you can am a complete line of application prog rams including programs for Business Education Personal finance Program...

Page 3: ...re information What to do in case of trouble After you finish reading this manual you can immediately begin running any Radio Shack Model III or Model 4 application programs you have purchased Later w...

Page 4: ...Getting to Know Your Model 4P 5 Chapter 3 Using TRSDOS to Prepare Diskettes 15 Chapter 4 Runnino Application Programs 21 Cfjgpfer 5 Learning to Proa ram with BASIC 27 Chapter 6 In Case of Trouble 31 C...

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Page 6: ...how they relate to one another Keyboard For entering information into the computer Screen and Printer For receiving information from the computer Memory For storing information and software inside the...

Page 7: ...thing practical such as compile a mail ing list you need an application program Radci Shack has manv aoolicalion programs or such tasks as accounting educating and word processing Languages A programm...

Page 8: ...er to prim a fist of your checking transactions Ybur application program decides what to print It then logvw the operation of the printer to TRSDOS Tfhe rest of this manual shows you how to set up you...

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Page 10: ...t up your computer and toad TRSDOS It also helps familiarize you with the Mortal 4P keyboard Setting Up the Model 4P The Model 4P comes with the screen cover on so you can easily move the computer whe...

Page 11: ...d 1 20 VAC 3 crong outlet Be sure the vents on the computer face up Loosen the cover from the screen by pushing the latches back as shown here Carefully remote and set aside ihe cover Then reach under...

Page 12: ...er cord to the power connec tor Then plug the other end into the grounded 120 VAC 3 prong outlet Because electrical mtorfengnccQ and aurgos can dcslroy data do not use an outlet that powers other heav...

Page 13: ...Printer Connector Use to conned a parallel printer Connect the cable so it exits to the bottom of the computer I Q Bus Connector Use to connect one or more hard disks or other devices Connect the cab...

Page 14: ...radios and the comptJtfir s dis play console Do not bend diskettes Do not write on the diskette label with a ball point pen or lead pencil Use a felt tep pen only Always put the diskette back in its p...

Page 15: ...tes 1o indicate the power is on Mote If you have a power strip you can turn all equipment on at Hie same time by pressing the power switch on the strip Starting Up TRSDOS In a few seconds one ofthc me...

Page 16: ...RESET switch then release it iNota Never press SHIFT caps or tfjHU dunnq startup The screen dis plays the TRSDDS starti ip massage wtiicti is simitar to this rn smj m _ c n phi lag l 1 1 1 i 1 uu J b...

Page 17: ...t iw dd yyv Enter todays date in the format specified For example fur June 14 19194 type D6 14 e4 TRSDOS displays the date in expanded lorm and Ihen displays the TRSDOS prompt TREDQS Ready Your Model...

Page 18: ...s the cursor to the beginning of the next line It also executes a command or program as we ll sftuw in the fallowing chapters At this time Ignore any messages suGh as Program not found TflSDOS Ready s...

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Page 20: ...end of Chapter 2 turn it on again Then insert your master TRSDOS System Diskette as before To lei you see what riles are on your diskette TRSDOS has a directory DIR command Start up TRSDOS and at TRS...

Page 21: ...diskette into a filing system in which the system can store and retrieve disk files Then you must use the BACKUP command to copy all tiles from your system diskette to the formatted disketle To format...

Page 22: ...worry about itiis message It is not an emor Its simply an extra precaution to keep you frnm hanking up nvpr informfltirin ynn may need Press TJ QOJTJH to continue 5 When the backup is complete the sy...

Page 23: ...eps 1 3 This time do not back up the system diskette After formatting Ihe diskette check its directory hytypino DIR 1 5 I CEHTEfl As you can see trie diskette contains only the files BOOT SYS and DIR...

Page 24: ...suurgv data diskette Press fiNUfi TRSOOS does the backup When it is fin ished il displays Insert SYSTEM ilisk ENTER When he drive lighl goes out remove the source diskette from Drive and insert the a...

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Page 26: ...nd slart up TRSDQG M TRSDOS Ready type am S f l fflffEB to look at the directory As you can see your disk ette contains the application program MAILUST At TRSDOS Read load and run MAILU5I by typing BA...

Page 27: ...r Lint 1 fid dr Line 2 Ci y t State i Zip Code Phone nnn nmi nnnn 1 i Ynn typp Acme daniif aclij riM THE attn Marian Smith sub QBD LaKejhore Drive EWTER Hoi 1 I UOOJ h Cfl 213 555 11U Remember if you...

Page 28: ...ter the number at the entrr van uant to see or ere s H ENTER to return to the Main Mentih List Entry 1 by pressing J ENTER Then list Entries 2 and 3 Now return to the Main Menu Change Entry Suppose th...

Page 29: ...Bj to see Entry 2 MAILLISI responds Entry 2 not f njnd Fran Stevens is no longer on the list List to Printer Return to the Main Menu bv Dressing I If you have a printer you may want to print your mail...

Page 30: ...te into Drive 1 2 The TRSDOS COPY mmmflnri lets you nnpy a single file from one diskette to another To copy the MAILLIST DAT file from the system diskette to frie data diskette type COPY MAILLI5T DAT...

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Page 32: ...at BASIC not TRSDOS is ready to accept a command or program statement You cannot directly execute a TRSDOS com mand Irom within an application program such as BASIC For exai i iplH type DIB EStl rmiES...

Page 33: ...creen ahows HELLO I SEE HE SPEAK THE SAKE LANGUAGE BASICALLY SPEAKING Readr Saving and Loading a Program Your program is stored in temporary memory You can run it whenever you wish until you exit the...

Page 34: ...load the program again by typing LOAD MAILLIST EflTElT The MAJLLIST program replaces the HELLO program m memory To see the MAILUST pro gram type LIST USB You cah freeze the display while it is listin...

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Page 36: ...stem or application program write protect it immediately as shown in Chapter 21 Use this as a master diskette to make your working and backup copies Then store this master diskette in a sate place and...

Page 37: ...ssages see vour specific application pro gram manual Command Messages Some TRSDOS commands give you a mes sage to warn you mat you are misusing tne command These messages tell you exactly what to do a...

Page 38: ...RSDOS displays this error message Prost ftm not fevrnd You simply need to type me command again spelling it correctly Another common operator error is trying to store too much information on a diskett...

Page 39: ...nur message P 4 J i t rror durildS read This usually indicates that tfie disk is worn or dirty or that thg drive ie dirty or out of alignment Try the operation again first using 9 different disk and t...

Page 40: ...la Base Management an electronic filing system Lets you organize and store large amounts ol related information on diskettes You can qwckv retrieve all or pari Of the infor mant inn as smflfln display...

Page 41: ...ral piubttfiiis For added possibilities many new programs accept information from arsutfier urogram Rir example a word processing program might let you use information that you stored with a data base...

Page 42: ...m call information is contained in the Model 4 Technical Reference Manual Catalog 26 21101 TRSDOS Commands Many TRSDOS commands are useful pro grams in and of themselves Some commands you might want t...

Page 43: ...s Manual that comes with your Model 4P describes all the t HUGOS commands Operating Systems Model ill Syittrnt f you purchase an appli cation program for the Model III you ll find it comes with a diff...

Page 44: ...econds press O and a tower case E at the same time Pressing F31 tells the hardware to load the Model III ROM pressing E 1ells it that the diskette in Drive contains the MODELA IU file but that you wan...

Page 45: ...3 diskette you can move it to other TRSDOS 1 3 diskettes using the TRSDOS 1 3 COPY command You may now reuse the diskette created in Step 2 as it is no longer required To copy the MODELA I 1 1 file t...

Page 46: ...orm the above procedure Running Model III Programs If your Model III application program diskette contains the MODELA1II file simply insert the diskette and press RESET If the file is not on the diske...

Page 47: ...tr rry tn Inpiri thp Model III ROM image e en if the diskette saems to need it An alternative is to move the contents of a TRSDOS 6 0 0 or TRSDOS 6 1 0 diskette ta a later version diskette To do so fo...

Page 48: ...diskette in Drive now contains Ihe latest version ol the oper ating system as well as all fro files that wens on the diskette In Drive 1 B And Now Its Your Tarn This chapter has touched on some popula...

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Page 50: ...are tries to enter the Model til ROM BASIC It the HOM image is not present an error message is displayed By pressing keys you can cause the hardware ta alter the above procedure Note Never use fffllFT...

Page 51: ...use If with any other option tor load 3 Use this with RESET it the ROM image is damaged RESET TJ tells the hardware to load the Model III ROM image even if it appears to be already foaded You Can use...

Page 52: ...sure it is properly connected to the hard disk and the Modei 4P Use an option other than IB The Hard Disk Drive is Not Reedy Cause The Hard Disk Controller reported that the pri mary hard disk drive w...

Page 53: ...RSSC Close the Floppy Drive Door Ana Try Again Cause There is a diskette in Drive 0 but the door is open or the disk Is inserted upside down Action Check the disk close the drive door and press RESET...

Page 54: ...s flawed Action Insert the diskette into Drive correctly close the door and try again Use another diskette Clean Drive 0 Contact RSSC HOM Image Can t Be Loaded Too Many Extents Cause The file MODELA W...

Page 55: ...e disk drive Use another disk Contact RSSC Soek Error Try Again Or Use Another Disk Causes The Floppy disk drive heads are dirty You re using defective or old disks You opened the disk drive door whil...

Page 56: ...OU 37 Programs that control hardwfire changing SET FILTER 38 Removing a file REMOVE 25 Saving TRSDOS and BASIC instructions KSM FLT as Storing information in memory MEMDISKJ 37 Compiler 37 CompuServe...

Page 57: ...2 PtiggLng in your Model 4P 7 Power strip Auto Control Paws Strip and Surye Piolectort 7 Power switch 7 Print 29 Printer Processor Programs Application Mode Ill operating system REMOVE Reset burton RO...

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