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| [142] help me http://forum.6502.org/viewtopic.php?f=7&t=397 |
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| Author: | pitchmeup [ Sun Dec 30, 2001 11:58 pm ] |
| Post subject: | [142.1] help me |
hi my name is murat.from turkey. i educate at marmara university and i need help about programming 6502. i have to deliver my project given by an assistant at university. subject:make a walking writing program by using 16 characters. IF U HELP ME OR NOT, I LL BE HAPPY ... e-mail:pitchmeup@yahoo.com.. |
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| Author: | 8BIT [ Wed Jan 02, 2002 10:47 pm ] |
| Post subject: | [142.2] help me |
HI Help me to understand your project a little more: By "walking writing" do you mean a display of 16 characters which has a message scolling across it? Also, what kind of input/output devices will you use (or at what are the parameters for these devices) As an overview, if my asumption is correct, you will have to store the text to a memory location with a null terminator (unless the message will always be exactly 16 characters. Next, use the x (or y) register to index the text. By adjusting the starting value of x, you can start your message with a different letter. You will of course have to account for the scrolling speed and direction as well. Give me more details and I'd be glad to HELP. I won't write your code but I can help give you some direction. Daryl |
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| Author: | GARTHWILSON [ Thu Jan 03, 2002 2:07 am ] |
| Post subject: | [142.3] help me |
Quote: you will have to store the text to a memory location with a null terminator (unless the message will always be exactly 16 characters. Another commonly used option is to start the string with a byte (or pair of bytes) telling the length. With the common intelligent character LCD modules, character $00 can be one of up to eight user-defined characters where you actually tell the LCD module which dots to turn on for that character. For newcomers: The "help me" plea comes across this forum regularly. As Daryl says, we really need the person requesting the help to be more specific. I replied to Murat privately, but have not heard from him again. Being at a school in Turkey, perhaps he does not have daily access to E-mail. [Edit, 12/22/21: I added some tips on how to get forum help, in the second half of the 6502 primer's page about general steps for a successful project, at http://wilsonminesco.com/6502primer/steps.html, after the heading "Getting help on the 6502.org forum:"] Garth |
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