Extended BASIC - Revision history

Stefan Haubenthal: Category

2022-12-29T01:18:46Z

Stefan Haubenthal at 02:33, 31 May 2018

2018-05-31T02:33:52Z

← Older revision		Revision as of 02:33, 31 May 2018
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	First TI produced [[TI BASIC]], built into the console. Then came the first attempt at an Extended BASIC, in module format, which returned the value of 100 with CALL VERSION(A). This first version is quite rare and suffered several problems.		First TI produced [[TI BASIC]], built into the console. Then came the first attempt at an Extended BASIC (XB), in module format, which returned the value of 100 with CALL VERSION(A). This first version is quite rare and suffered several problems.

	Very quickly a rewrite was issued. The second version was still called TI Extended BASIC but this time when you used CALL VERsion(A) it returned a value of 110. It was faster. (Mostly because it was no longer trying to keep track of graphic sprites that you weren't using).		Very quickly a rewrite was issued. The second version was still called TI Extended BASIC but this time when you used CALL VERsion(A) it returned a value of 110. It was faster. (Mostly because it was no longer trying to keep track of graphic sprites that you weren't using).

Stefan Haubenthal: Category

2015-06-10T14:03:24Z

Stephen Shaw: /* Right Adjust displayed numbers */ link to PRINT USING article

2015-02-14T11:09:39Z

Right Adjust displayed numbers: link to PRINT USING article

← Older revision		Revision as of 11:09, 14 February 2015
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	To right adjust money or other decimal numbers so that numeric input of 4 or 4.5 or 4.26 neatly line up:		To right adjust money or other decimal numbers so that numeric input of 4 or 4.5 or 4.26 neatly line up:
	DISPLAY AT(R,C):USING "####.##":VALUE		DISPLAY AT(R,C):USING "####.##":VALUE
	Using this command, any positive number up to 9999.99 with no decimal places, or one or two decimal places, will display correctly lined up and showing two decimal places.		Using this command, any positive number up to 9999.99 with no decimal places, or one or two decimal places, will display correctly lined up and showing two decimal places.

			For more on the USING options refer to the article [[Print Using]]

	===MIN and MAX===		===MIN and MAX===

Stephen Shaw: /* Randomize bug using disk LOAD */ note that the bug is console dependent

2015-02-02T13:41:49Z

Randomize bug using disk LOAD: note that the bug is console dependent

← Older revision		Revision as of 13:41, 2 February 2015
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	If you have a disk system, and have a disk of XB programs which has a program called LOAD, your system will automatically load the LOAD program from DSK1 when you select Extended Basic.		If you have a disk system, and have a disk of XB programs which has a program called LOAD, your system will automatically load the LOAD program from DSK1 when you select Extended Basic.

	It also kicks RANDOMIZE into touch, not only for the LOAD program but also for any program that the LOAD program loads and runs.		It also kicks RANDOMIZE into touch, not only for the LOAD program but also for any program that the LOAD program loads and runs (see note re console variations below).

	If the computer manages to find a LOAD program, then your RND will always provide the same sequence every time you boot up, even if your program has a RANDOMIZE. Save this program to disk as DSK1.LOAD and boot into Extended Basic.		If the computer manages to find a LOAD program, then your RND will always provide the same sequence every time you boot up, even if your program has a RANDOMIZE. Save this program to disk as DSK1.LOAD and boot into Extended Basic.
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	Bruce tells us this fix can be attributed to Harry Wilhelm and dates back a couple of years.		Bruce tells us this fix can be attributed to Harry Wilhelm and dates back a couple of years.

			'''UPDATE''' This bug has also been seen when LOADing from ramdisk, but appears to be dependent on specific TI99/4a consoles. The RANDOMIZE routine would appear to be using a memory address or routine in the console which at some point was changed, some versions receiving interference from the disk LOAD routine.

	===On Error (not a bug) workround===		===On Error (not a bug) workround===

Stephen Shaw: /* Extended BASIC commands */ link to randomize bug note

2015-01-25T18:11:04Z

Extended BASIC commands: link to randomize bug note

← Older revision		Revision as of 18:11, 25 January 2015
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	===ON ERROR===		===ON ERROR===

			===RANDOMIZE===
			Refer to [[#Randomize bug using disk LOAD\|Randomize bug using disk LOAD]]

	===RUN===		===RUN===

Stephen Shaw: /* Programming Hints */ Add note of bug in Randomize when LOADing program from disk

2015-01-25T18:08:06Z

Programming Hints: Add note of bug in Randomize when LOADing program from disk

← Older revision		Revision as of 18:08, 25 January 2015
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	MAX - If a variable is restricted to being no lower than 6 you would normally say IF A<6 THEN A=6 however you can say A=MAX(A,6)		MAX - If a variable is restricted to being no lower than 6 you would normally say IF A<6 THEN A=6 however you can say A=MAX(A,6)

			===Randomize bug using disk LOAD===
			This from Bruce Harrison of Harrison Software via Micropendium:-

			If you have a disk system, and have a disk of XB programs which has a program called LOAD, your system will automatically load the LOAD program from DSK1 when you select Extended Basic.

			It also kicks RANDOMIZE into touch, not only for the LOAD program but also for any program that the LOAD program loads and runs.

			If the computer manages to find a LOAD program, then your RND will always provide the same sequence every time you boot up, even if your program has a RANDOMIZE. Save this program to disk as DSK1.LOAD and boot into Extended Basic.
			100 RANDOMIZE
			110 FOR T=1 TO 6
			120 PRINT INT (RND*100)
			130 NEXT T
			140 RUN "DSK1.LOAD"

			and watch the six numbers repeat again and again, in defiance of the RANDOMIZE command.

			Thus if you use a LOAD menu program to put in XB programs such as games or graphics or what have you, you may as well forget about RANDOMIZE... except...
			70 CALL INIT
			80 CALL PEEK(-31880, [ , ])
			90 CALL LOAD(-31808,[,])
			and now try it... see, different numbers.

			(Yes you can use [ and ] as variable names!)

			NOTE that you must omit the CALL INIT if it has already been used for example to load an assembly utility such as The Missing Link else you will destroy the utility! Call Init is also not required it you use the Triton version of XB titled Super Extended Basic on the module label and (c)1987 T PC.

			Bruce tells us this fix can be attributed to Harry Wilhelm and dates back a couple of years.


	===On Error (not a bug) workround===		===On Error (not a bug) workround===

Stephen Shaw: add link to TI Basic

2015-01-03T16:09:37Z

add link to TI Basic

← Older revision		Revision as of 16:09, 3 January 2015
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	First TI produced TI BASIC, built into the console. Then came the first attempt at an Extended BASIC, in module format, which returned the value of 100 with CALL VERSION(A). This first version is quite rare and suffered several problems.		First TI produced [[TI BASIC]], built into the console. Then came the first attempt at an Extended BASIC, in module format, which returned the value of 100 with CALL VERSION(A). This first version is quite rare and suffered several problems.

	Very quickly a rewrite was issued. The second version was still called TI Extended BASIC but this time when you used CALL VERsion(A) it returned a value of 110. It was faster. (Mostly because it was no longer trying to keep track of graphic sprites that you weren't using).		Very quickly a rewrite was issued. The second version was still called TI Extended BASIC but this time when you used CALL VERsion(A) it returned a value of 110. It was faster. (Mostly because it was no longer trying to keep track of graphic sprites that you weren't using).

Stephen Shaw: /* Programming Hints */ link to new article on passing variables to a second program or across a BREAK

2014-12-30T10:13:35Z

Programming Hints: link to new article on passing variables to a second program or across a BREAK

← Older revision		Revision as of 10:13, 30 December 2014
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	===Exchanging Variable Values===		===Exchanging Variable Values===

	Nice bit of code here for you to look at. Let's suppose we have CAT=6 and DOG=9, how do we change those around?		Nice bit of code here for you to look at. Let's suppose we have CAT=6 and DOG=9, how do we change those around?

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	20 CAT=CAT XOR DOG :: DOG=CAT XOR DOG :: CAT=CAT XOR DOG		20 CAT=CAT XOR DOG :: DOG=CAT XOR DOG :: CAT=CAT XOR DOG
	30 PRINT CAT:DOG		30 PRINT CAT:DOG

			===Passing variables to a second program===
			See article [[Maintaining variable values]]


	===Hi resolution pseudo-graphics===		===Hi resolution pseudo-graphics===
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	It is not possible to say when you will 'run out of ink'. TI Logo uses a similar method of drawing.		It is not possible to say when you will 'run out of ink'. TI Logo uses a similar method of drawing.



	The routine is written to prevent crashes if you do run out of ink, but in itself will not check that R and C are within the screen boundaries.		The routine is written to prevent crashes if you do run out of ink, but in itself will not check that R and C are within the screen boundaries.

Stephen Shaw: /* Built in */ add use of call color for sprite color.

2014-12-28T13:35:31Z

Built in: add use of call color for sprite color.

← Older revision		Revision as of 13:35, 28 December 2014
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	====Built in====		====Built in====

	CALL COLOR and CALL SCREEN used numeric color codes. The 16 colors available included white, black and transparent. Refer to the [[color\| color code chart]]. CALL SCREEN(C) and CALL COLOR(Set,BG,FG). For COLOR the characters were split into groups identified by the first variable.		CALL COLOR and CALL SCREEN used numeric color codes. The 16 colors available included white, black and transparent. Refer to the [[color\| color code chart]]. CALL SCREEN(C) and CALL COLOR(Set,FG,GG). For COLOR the characters were split into groups of eight identified by the first variable. CALL COLOR could also be used to set a sprites color (CALL COLOR,SN,SC).

	CALL LOAD requires expansion memory and allows you to place values directly into CPU ram. These can be used for a variety of purposes, see the samples in [[Speech]] and [[Sound with CALL LOAD]].		CALL LOAD requires expansion memory and allows you to place values directly into CPU ram. These can be used for a variety of purposes, see the samples in [[Speech]] and [[Sound with CALL LOAD]].

← Older revision		Revision as of 01:18, 29 December 2022
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	Convert the numbers on each side of the OR to a binary number (made up of 1s and 0s. From Microsoft: "The bitwise OR operator performs a bitwise logical OR between the two expressions, taking each corresponding bit for both expressions. The bits in the result are set to 1 if either or both bits (for the current bit being resolved) in the input expressions have a value of 1; if neither bit in the input expressions is 1, the bit in the result is set to 0.". eg (1001 OR 0100)=1101 also (0010 OR 0010)=0010.		Convert the numbers on each side of the OR to a binary number (made up of 1s and 0s. From Microsoft: "The bitwise OR operator performs a bitwise logical OR between the two expressions, taking each corresponding bit for both expressions. The bits in the result are set to 1 if either or both bits (for the current bit being resolved) in the input expressions have a value of 1; if neither bit in the input expressions is 1, the bit in the result is set to 0.". eg (1001 OR 0100)=1101 also (0010 OR 0010)=0010.

			[[Category:Speech]]
	[[Category:Programming language]]		[[Category:Programming language]]
	[[Category:Module]]		[[Category:Module]]

← Older revision		Revision as of 14:03, 10 June 2015
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	Convert the numbers on each side of the OR to a binary number (made up of 1s and 0s. From Microsoft: "The bitwise OR operator performs a bitwise logical OR between the two expressions, taking each corresponding bit for both expressions. The bits in the result are set to 1 if either or both bits (for the current bit being resolved) in the input expressions have a value of 1; if neither bit in the input expressions is 1, the bit in the result is set to 0.". eg (1001 OR 0100)=1101 also (0010 OR 0010)=0010.		Convert the numbers on each side of the OR to a binary number (made up of 1s and 0s. From Microsoft: "The bitwise OR operator performs a bitwise logical OR between the two expressions, taking each corresponding bit for both expressions. The bits in the result are set to 1 if either or both bits (for the current bit being resolved) in the input expressions have a value of 1; if neither bit in the input expressions is 1, the bit in the result is set to 0.". eg (1001 OR 0100)=1101 also (0010 OR 0010)=0010.




	[[Category:Programming language]]		[[Category:Programming language]]
			[[Category:Module]]