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• Home built Spectrum 128
  The Sinclair spectrum is a relatively simple computer and only really uses one custom part, the U [[Spectrum Keyboard]]
  1,017 B (162 words) - 08:51, 14 October 2011
• Spectrum Keyboard
  =Spectrum keyboard= The Spectrum reads its keyboard from port $FE. It reads it 5 keys at a time.
  8 KB (1,272 words) - 20:00, 2 October 2011
• Spectrum 128 Audio
  The spectrum provides 3 channel Audio via the [[AY-3-8912]] chip.
  1 KB (233 words) - 22:48, 20 July 2011

Page text matches

• Old computers
  I own a pile of 1980's computers. Mostly various varieties of Spectrum, but others as well: '''Varieties of Spectrum:'''
  968 B (128 words) - 10:58, 10 October 2011
• Home built Spectrum 128
  The Sinclair spectrum is a relatively simple computer and only really uses one custom part, the U [[Spectrum Keyboard]]
  1,017 B (162 words) - 08:51, 14 October 2011
• Building and testing the video mixer
  The video mixer in the spectrum takes the inverted video signal (/Y), and the colour signal from the chroma [[Category:Spectrum]]
  2 KB (296 words) - 10:41, 1 April 2011
• Building and testing the Chroma section
  [[Category:Spectrum]]
  3 KB (454 words) - 22:27, 1 April 2011
• ULA and lower ram section and testing
  Other than that, it must be given some memory. In the original zx-spectrum, this was done with 8, 1bit chips of type [[4116]], which was a very popula [[Category:Spectrum]]
  2 KB (372 words) - 14:54, 14 April 2011
• Adding the CPU and ROM
  At this stage, if everything is wired in, we have a 16k spectrum minus its keyboard. So simply plugging in the video section and the power s [[Category:Spectrum]]
  3 KB (450 words) - 18:27, 15 May 2011
• Spectrum Keyboard
  =Spectrum keyboard= The Spectrum reads its keyboard from port $FE. It reads it 5 keys at a time.
  8 KB (1,272 words) - 20:00, 2 October 2011
• Power supply
  [[Category:Spectrum]]
  991 B (151 words) - 21:00, 15 May 2011
• Speaker and audio
  The Spectrum 48 sound is very basic, and the computer will work without it. [[Category:Spectrum]]
  1 KB (230 words) - 22:19, 16 May 2011
• 48K ram
  To provide 48K, the top 32K needs to be populated. In the original spectrum, this was done using 32k x1 Ram chips and decoding logic. ... at $4000, so writes to this will appear in Page 5, similar to on the 128K spectrum. (And page 2 will appear at $8000 as well)
  3 KB (536 words) - 18:22, 17 May 2011
• 128k Ram paging
  ...he Diode and resistor connected to Bit 6 of the latch. This implements the Spectrum 128's paging lock. Once this is "1", the diode will prevent any more writes [[Category:Spectrum]]
  4 KB (738 words) - 22:06, 24 May 2011
• 128k ROM paging
  The last thing required to make a totally working Spectrum 128 (Apart from the rarely used Shadow ram), is to implement the 32K Rom. After that, you need to write a copy of the Spectrum 128 Roms to the Eprom you are using. (Repeatedly if nessesary)
  1 KB (230 words) - 21:47, 19 July 2011
• Spectrum 128 Audio
  The spectrum provides 3 channel Audio via the [[AY-3-8912]] chip.
  1 KB (233 words) - 22:48, 20 July 2011
• Modification for rom selection
  The Spectrum 128 is a wonderful machine, but sometimes you just want something slightly * Spectrum 128K Rom ("Toastrack")
  2 KB (407 words) - 08:17, 5 July 2011