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boards:sbc:sbc_v2:start [2019/07/13 06:23]
b1ackmai1er [Board]
boards:sbc:sbc_v2:start [2019/10/12 03:15] (current)
b1ackmai1er [Boot BEEP modification]
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 ===== Boot "​BEEP"​ modification ===== ===== Boot "​BEEP"​ modification =====
  
-There is no inbuilt sound on the SBC V2 board. Complex sound output can be achieved with the ECB-SCG (Sprite-Colour-Graphics) board.+There is no inbuilt sound on the SBC V2-003 board. Complex sound output can be achieved with the ECB-SCG (Sprite-Colour-Graphics) board.
  
 Rudimentary sound support can be add the SBC V2 by utilizing one of the unused outputs of the RTC interfacing latch and connecting a simple amplifier to this output. Rudimentary sound support can be add the SBC V2 by utilizing one of the unused outputs of the RTC interfacing latch and connecting a simple amplifier to this output.
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 With this addition and the ''​SPKENABLE''​ setting set to ''​TRUE ''​in ROMWBW, the SBC V2 will issue a beep sound on bootup. With this addition and the ''​SPKENABLE''​ setting set to ''​TRUE ''​in ROMWBW, the SBC V2 will issue a beep sound on bootup.
 +
 +A transistor speaker driver has been incorporated in the SBC-V2-004 so a speaker can be connected directly to the board.
 +
 +Sound support has been added to NASCOM BASIC in ROMWBW 2.9.2-pre.17:​
 +
 +<​code>​
 +PLAY O,N,D
 +
 +Where:
 + O = OCTAVE 0-8
 + N = NOTE 0-11
 + D = DURATION 1-8 (8ths of a second)
 +
 +Example:
 + ​Middle C for one second = PLAY 4,0,8
 +</​code>​
  
 {{https://​www.retrobrewcomputers.org/​lib/​plugins/​ckgedit/​fckeditor/​userfiles/​image/​boards/​sbc/​sbc_v2/​sbc-v2-beep-mod.png?​nolink&​800 ​ }} {{https://​www.retrobrewcomputers.org/​lib/​plugins/​ckgedit/​fckeditor/​userfiles/​image/​boards/​sbc/​sbc_v2/​sbc-v2-beep-mod.png?​nolink&​800 ​ }}
 +
  
 ===== Speed switch modification:​ ===== ===== Speed switch modification:​ =====
boards/sbc/sbc_v2/start.1563013437.txt.gz · Last modified: 2019/07/13 06:23 by b1ackmai1er
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