AppleI BasicMan

PRELIMINARY APPLE BASIC USERS MANUAL OCTOBER 1976 Apple Computer Company ° 770 Welch Rd., Palo Alto, CA 94304 « (415) 326-4248 This is a PRELIMINARY manual. It will, most likley, contain errors, incorrect wordings, etc. Your effort in noting these areas of improvement will be greatly appreciated. If you find an error or can suggest an improvement, please write: APPLE COMPUTER COMPANY 770 WELCH RD. SUITE 154 PALO ALTO, CA 94304 (415) 326-4248 LOADING APPLE BASIC Apple BASIC is provided on a cassette tape which can be read into the "E" block of memory in about 30 seconds. To load BASIC from the tape do the following: Hit the "CLEAR SCREEN" button which will clear the screen and display only the cursor (a flashing @ sign) in the upper left corner of the screen. Hit the "RESET" button which will cause the computer to print a backslash (\) and move the cursor down a line. Place the BASIC cassette into the recorder, rewinding it if necessary. NOTE*** The symbol + means hit the "RETURN" key on the keyboard. The symbol + will not, of course, be printed on the screen. 1. ‘Type C1PGR + 2. Type _EGQP.EFFFR (don't hit + yet!) 3. Start the tape 4, Hit + 5. When BASIC is loaded (about 30 seconds) the computer will print a backslash (\). To enter BASIC type E@@PR+. The computer will print a few charac- ters, then, on the next line, print the prompt character >. This prompt character (>) is used throughout BASIC to signify that the BASIC is ready for additional commands or statements. To exit BASIC hit the "RESET" button. This will return control to the monitor. To re-enter BASIC from the monitor without losing the previous program, enter BASIC at E2B3+, instead of E@@fr. This is extremely useful when you have unintentionally hit the "RESET" button while in BASIC. Normally, you should enter BASIC at E@9P+, which clears any previous programs. It is advisable to make a duplicate copy of Apple BASIC on another cassette. Exit BASIC as described and: 1. Type C19GR+ 2. Type E@QO.EFFFW (don't hit + yet!) 3. Start the tape (Recording) 4. Hit +. 5. The computer will print a backslash (\) when finished. READING AND WRITING BASIC PROGRAMS ON TAPE It is possible to store and retrieve BASIC programs on/from a cassette tape. To write a BASIC program onto a tape: 1. Exit BASIC as described above. 2. ‘Type C1PPBRY 3. Type 4A. QOFFW8G0.FFFW (don't hit + yet!) 4. Start the tape (Recording) : Se Hit +. 6. . The computer will print a backslash (\) when completed. 7. §Enter BASIC at E2B3. To read a BASIC program from a tape, the same procedure is used except an R (for READ) is substituted for each W in line 3 above and the tape unit is playing instead of recording. Loading a BASIC program in this manner can be done either prior to loading BASIC or any time thereafter by first exiting BASIC, loading the program, and re-entering BASIC at E2B3. PROGRAM EXECUTION To review all of the program statements, the LIST command is used. To execute the progr…