Cassidy Nolen Posted August 21, 2002 Share Posted August 21, 2002 Hi all, Have a question about the ROM for a 2600 game. If you were to use a jump to byte 0200 command, which end of the game rom would you put it on? I tried putting the command A4 00 02 in the locations 00 01 02, but it did not do what I wanted it to. Does it need to go at the other end, like 0FFF, and backwards? I really have been trying to understand the assembly language; just not clear where the Atari starts "reading". Thanks all. I will really try not to ask more stupid questions than necessary.... Cassidy BTW, where do I sign up for Stella's List? Quote Link to comment Share on other sites More sharing options...
Paul Slocum Posted August 21, 2002 Share Posted August 21, 2002 When you boot the Atari, it reads the word at $0FFC and loads that word into the program counter. So you tell it where to start reading. org $0FFC dc.w $0000 ; For example, tell it to start at $0000 dc.w $0000 ; Fill in two more bytes to make it a full 4K ; ( I believe this is also the interrupt vector ) -Paul Quote Link to comment Share on other sites More sharing options...
Thomas Jentzsch Posted August 21, 2002 Share Posted August 21, 2002 BTW, where do I sign up for Stella's List? http://www.biglist.com/lists/stella Quote Link to comment Share on other sites More sharing options...
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