TI-99/4 - Revision history

Stephen Shaw: Move content to TI99/4 and 4a differences and redirect this heading to that page

2014-12-28T15:26:45Z

Move content to TI99/4 and 4a differences and redirect this heading to that page

← Older revision		Revision as of 15:26, 28 December 2014
Line 1:		Line 1:
	~~The TI-99/4 was the predecessor of the TI-99/4A home computer.~~		#Redirect[[TI99/4 and 4a differences]]

	[[~~Image:ti994_console.jpg\|300px]]~~

	~~Differences between 99~~/4 and ~~99/4A:~~

	~~Apart from the obviously different keyboard there are other not obvious changes.~~

	~~==Call Key==~~
	The keyboard change means that for programs to run on BOTH consoles, when using the split keyboard (CALL KEY 1 and 2) you cannot use keys which return the codes 13, 16, and 17. When using a split keyboard on the "A" the key value 0 (zero) does NOT equate to zero - you must use indirect means such as IF A+ 1 = 1.

	~~==Character Set==~~
	Now - non obvious: The 99/ 4A has a different character set - not only are small characters made available (with some clever internal routines) but the big letters are BIGGER by one pixel. The result: A fairly crowded screen AND - if you are fortunate and have a thermal printer - printer TP. U. S. E. (screen dump) does NOT work. (It works, but badly, with no space between letters, vertically).


	[[Category:Hardware]]		[[Category:Hardware]]

2014-10-02T09:48:21Z

format change

← Older revision		Revision as of 09:48, 2 October 2014
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	==Character Set==		==Character Set==
	Now - non obvious: The 99/ 4A has a different character set - not only are small characters made available (with some clever internal routines) but the big letters are BIGGER by one pixel. The result: A fairly crowded screen AND - if you are fortunate and have a thermal printer - printer TP. U. S. E. (screen dump) does NOT work. (It works, but badly, with no space between letters, vertically).		Now - non obvious: The 99/ 4A has a different character set - not only are small characters made available (with some clever internal routines) but the big letters are BIGGER by one pixel. The result: A fairly crowded screen AND - if you are fortunate and have a thermal printer - printer TP. U. S. E. (screen dump) does NOT work. (It works, but badly, with no space between letters, vertically).


	[[Category:Hardware]]		[[Category:Hardware]]

2014-10-02T09:47:53Z

add a couple of differences to 99/4a

← Older revision		Revision as of 09:47, 2 October 2014
Line 2:		Line 2:

	[[Image:ti994_console.jpg\|300px]]		[[Image:ti994_console.jpg\|300px]]

			Differences between 99/4 and 99/4A:

			Apart from the obviously different keyboard there are other not obvious changes.

			==Call Key==
			The keyboard change means that for programs to run on BOTH consoles, when using the split keyboard (CALL KEY 1 and 2) you cannot use keys which return the codes 13, 16, and 17. When using a split keyboard on the "A" the key value 0 (zero) does NOT equate to zero - you must use indirect means such as IF A+ 1 = 1.

			==Character Set==
			Now - non obvious: The 99/ 4A has a different character set - not only are small characters made available (with some clever internal routines) but the big letters are BIGGER by one pixel. The result: A fairly crowded screen AND - if you are fortunate and have a thermal printer - printer TP. U. S. E. (screen dump) does NOT work. (It works, but badly, with no space between letters, vertically).


	[[Category:Hardware]]		[[Category:Hardware]]

2011-08-13T23:41:48Z

2009-05-22T12:14:55Z

New page

The TI-99/4 was the predecessor of the TI-99/4A home computer.

[[Image:ti994_console.jpg|300px]]