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base:techtech_fli [2016-04-21 13:25] – [Introduction] compyxbase:techtech_fli [2016-04-21 13:43] – compyx
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-====== The Theory =====+===== The Theory =====
  
 //I'll use the word 'logo' here to simplify things a bit. My code doesn't actually include a logo, just some text //I'll use the word 'logo' here to simplify things a bit. My code doesn't actually include a logo, just some text
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 ; sinus = 9 ; sinus = 9
-lda #$1d+lda #$1e
 sta $d011 sta $d011
 lda #$01    ; 9 & 7 == 1 lda #$01    ; 9 & 7 == 1
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             ; one column to the right             ; one column to the right
  
-; and so on for each line of the logo+; and so on for each line of the logo, wrapping the $d011 
 +; value around from $1f to $18
 </code> </code>
  
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 ===== The Code ===== ===== The Code =====
  
-Here's the actual source code, in 64tass syntax. The FLI routine needs to be unrolled, the sinus calculation can all be done in a loop, but that eats cycles, so I also wrote some unrolled code for the $d016/$d018 values updating:       +Here's the actual source code, in 64tass syntax. The FLI routine needs to be unrolled, the sinus calculation can all be done in a loop, but that eats cycles, so I also wrote some unrolled code for the $d016/$d018 values updating. 
 + 
 +Before assembling, one should probably comment out the references to the music, I would be surprised to see everyone having their HVSC at "/home/compyx/c64/HSVC" ;)
  
 <code 6502tasm> <code 6502tasm>
base/techtech_fli.txt · Last modified: 2016-04-22 12:41 by compyx