Sinclair basic free#
FREE: FREE can be used at any time within a program, or from immediate mode, to return.Values, from the beginning of a program to the line specified, or from the line specified to the end of theĮxample: DELETE (between values) or DELETE (to value) or DELETE (from value) DELETE: The DELETE command is used to remove lines of a program between two supplied.The additional commands found in Timex BASIC are listed below: Generally speaking, BASIC programs written for the ZX Spectrum will run on Timex machines without Timex BASIC is a superset of Sinclair BASIC, with additional commands allowing access to the hardware features found on Values as screen co-ordinates (if a decimal value is passed, it is rounded to the nearest integer) for the UNPLOT: UNPLOT essentially reverses the effect of the PLOT statement, and accepts 2 integer.In SLOW mode, the screen is refreshed as required.
Sinclair basic series#
However, if a series of PRINT statements preceded by SCROLL is followedīy a PRINT statement that is not followed by a SCROLL, the computer will stop with an error. Pressing CONT will allowĬontinuation with a 'new' screen. 'overflows' the 22 available display lines, the program with stop with an error. The required number of lines when the screen becomes full. SCROLL: The SCROLL command instructs the machine to automatically 'shift' the display up by.Will be automatically opened that way, and vice-versa. Programs loaded from cassette that were SAVEd when the machine is in FAST mode It is common to switch from SLOW mode (the default) to FAST mode when entering large programs,įor example. Until it is changed, allowing certain sections of a program to be executed more quickly than others ifĭesired. The system will stay in the specified mode The program has completed, or input from the user is required. This is accomplished by not refreshing the screen display until FAST: Instructs the computer to operate in FAST mode.The following commands are found exclusively on these models Including the history and development of the language, and various interpreters for different platforms at the There is an extensive discussion of Sinclair BASIC,