Difference between revisions of "TI-99/4"

Latest revision as of 15:26, 28 December 2014

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-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]]