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mos6581 [2011/09/28 09:52] – wadminmos6581 [2011/10/01 13:08] – wadmin
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 All the sources are listed in the last section of the Datasheet. All the sources are listed in the last section of the Datasheet.
  
-===== Once upon a time... ===== +== Once upon a time... ==
 //In 1982, a young engineer named Bob Yannes was given the task of developing a soundchip for the Commodore company within a four month time frame. // //In 1982, a young engineer named Bob Yannes was given the task of developing a soundchip for the Commodore company within a four month time frame. //
  
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 //Until the SID enthusiasts took the flag...// //Until the SID enthusiasts took the flag...//
  
-===== MOS 6581 Datasheet =====+ 
 + 
 + 
 +===== MOS6581 SOUND INTERFACE DEVICE (SID) =====
 The 6581 Sound Interface Device (SID) is a single-chip, 3 voice electronic music synthesizer/sound effects generator compatible with the 65XX and similar microprocessor families. SID provides wide-range, high-resolution control of pitch (frequency), tone color (harmonic content) and dynamics (volume). Specialized control circuitry minimizes software overhead, facilitating use in arcade/home video games and low-cost musical instruments. The 6581 Sound Interface Device (SID) is a single-chip, 3 voice electronic music synthesizer/sound effects generator compatible with the 65XX and similar microprocessor families. SID provides wide-range, high-resolution control of pitch (frequency), tone color (harmonic content) and dynamics (volume). Specialized control circuitry minimizes software overhead, facilitating use in arcade/home video games and low-cost musical instruments.
  
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 Together these registers form a 16-bit number which linearly controls the Frequency of Oscillator 1. The frequency is determined by the following equation:  Together these registers form a 16-bit number which linearly controls the Frequency of Oscillator 1. The frequency is determined by the following equation: 
  
-Fout = (Fn * Fclk/16777216) Hz +<math>Fout = (Fn * Fclk/16777216) Hz </math>
  
 Where Fn is the 16-bit number in the Frequency registers and Fclk is the system clock applied to the Ø2 input (pin 6). For a standard 1.0 Mhz clock, the frequency is given by:  Where Fn is the 16-bit number in the Frequency registers and Fclk is the system clock applied to the Ø2 input (pin 6). For a standard 1.0 Mhz clock, the frequency is given by: 
mos6581.txt · Last modified: 2018/08/26 09:36 by 127.0.0.1