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![]() Atari Products | A Bit of History | Memo Pad | 1st Word | Links | Home
Memo Pad How to Tell if you have CTIA or GTIAIn early 1982, Atari began using an upgraded version of the CTIA chip called GTIA. GTIA stands for Graphics Television Interface Adapter, and CTIA means Color Television Interface Adapter. To find out if your Atari 400 or 800 computer has the newer GTIA chip, run the following BASIC program (don't forget to plug your BASIC cartridge into the left slot)... How to Tell if you have OS Revision A or BIn January of 1982, Revision B of the Operating System was released. To tell which version of the OS your machine has, type in this BASIC instruction (don't forget to plug your BASIC cartridge into the left slot)... Which Version of BASIC do you have?There are three versions of Atari BASIC for the 8-Bit computers. The 400 and 800 used either Version A or B on cartridge, the 800XL had basic built-in (usually Version B), and the 130XE had Version C built-in. Version C was also available on cartridge for the earlier models. You might be wondering how to tell which version you have, especially if it's on a cartridge. Here is some simple code to help, and of course, (don't forget to plug your BASIC cartridge into the left slot)... An Atari BASIC Line DeleterIf you've typed in many BASIC programs on your trusty old 8-Bit Atari, you no doubt have needed to delete a range of lines at one time or another. The hard way to do it is to manually type each line number, followed by RETURN. That's OK for 1 or 2 lines, but a real pain if you need to delete quite a few lines of code. Here's a handy little program to do it for you. It originated in one of the Atari magazines back in the early 80's. (Don't forget to plug your BASIC cartridge into the left slot)... GOTO the 8-Bit FAQFor more information regarding Atari 8-Bit computers, please consult the official Atari 8-Bit Computers: Frequently Asked Questions GOTO the 8-Bit Reference ManualFor the advanced user (6502 assembly language knowledge a plus), try the 8-bit Reference Manual by Bob DuHamel.
Atari Products | A Bit of History | Memo Pad | 1st Word | Links | Home |