qlwiki:history

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
qlwiki:history [2017/09/05 10:12]
rwap
qlwiki:history [2019/11/10 15:20] (current)
vezhlys just removing unnecessarry new lines
Line 14: Line 14:
  
 There are also software and hardware solutions to provide a much improved display on the QL. There are also software and hardware solutions to provide a much improved display on the QL.
- 
- 
  
   * A program SPLITMODE_ASM in the [[http://​www.quanta.org.uk/?​id=88|Quanta software library]] allows you to split a screen vertically in two, with one half displaying MODE 4 and the other half displaying MODE 8   * A program SPLITMODE_ASM in the [[http://​www.quanta.org.uk/?​id=88|Quanta software library]] allows you to split a screen vertically in two, with one half displaying MODE 4 and the other half displaying MODE 8
Line 55: Line 53:
 //​https://​youtu.be/​sxw-fV4gG3M|Watch this video on You Tube// //​https://​youtu.be/​sxw-fV4gG3M|Watch this video on You Tube//
 On April 7th 1986 Alan Sugar and Sir Clive Sinclair announced that Sinclair Research sold its computer business and the Sinclair brand name for computers to Amstrad for merely £5 million. On April 7th 1986 Alan Sugar and Sir Clive Sinclair announced that Sinclair Research sold its computer business and the Sinclair brand name for computers to Amstrad for merely £5 million.
- 
- 
- 
- 
  
  ​====== The ICL connection ======  ​====== The ICL connection ======
Line 75: Line 69:
  
 More Details about the ICL One Per Desk appear on the [[http://​www.rwapsoftware.co.uk/​oneperdesk.html|RWAP Software website]] More Details about the ICL One Per Desk appear on the [[http://​www.rwapsoftware.co.uk/​oneperdesk.html|RWAP Software website]]
- 
- 
  
  ​====== Another Long Lost QL Cousin ======  ​====== Another Long Lost QL Cousin ======
Line 91: Line 83:
  
 Hardware add-ons are still being produced for the original QL mainly by [[qlwiki:TF Services]] who supply the [[qlwiki:​Romdisq]],​ the [[qlwiki:​Minerva]] replacement Operating System, [[qlwiki:​I2C interfaces]] bus based peripherals,​ superHermes (keyboard interface, fast RS232 etc) and [[qlwiki:​MPlane]] buffered backplane systems. Hardware add-ons are still being produced for the original QL mainly by [[qlwiki:TF Services]] who supply the [[qlwiki:​Romdisq]],​ the [[qlwiki:​Minerva]] replacement Operating System, [[qlwiki:​I2C interfaces]] bus based peripherals,​ superHermes (keyboard interface, fast RS232 etc) and [[qlwiki:​MPlane]] buffered backplane systems.
- 
- 
  
  ​======Trivia ======  ​======Trivia ======
Line 102: Line 92:
   * External QL Microdrives appeared on QL accessory pricelists but were never produced. ​  You could use a ZX Microdrive unit (from the Spectrum), but the slot faced the back of the QL rather than the front as you would expect   * External QL Microdrives appeared on QL accessory pricelists but were never produced. ​  You could use a ZX Microdrive unit (from the Spectrum), but the slot faced the back of the QL rather than the front as you would expect
   * The QL was introduced at the time the SCART connector was becoming common in European televisions. The SCART connector carries RGB component video, enabling a brilliant display of the QL's four colours (black + 3) on a TV set.   * The QL was introduced at the time the SCART connector was becoming common in European televisions. The SCART connector carries RGB component video, enabling a brilliant display of the QL's four colours (black + 3) on a TV set.
- 
  
 [[qlwiki:​Simon Goodwin]] reckons this is more rubbish; the QL's RGB-TTL output is way over the 0 dB levels for SCART, Sinclair never made a QL SCART lead, the 4 colour MODE 4 is incompatible with PAL colour TV bandwidth (even after dropping lots of pixels in flyback at the left edge), so the comparison would be better made with MODE 8, but the levels are still way off. Unless you (say) drop in some 330 ohm resistors... ;-)  [[qlwiki:​Simon Goodwin]] reckons this is more rubbish; the QL's RGB-TTL output is way over the 0 dB levels for SCART, Sinclair never made a QL SCART lead, the 4 colour MODE 4 is incompatible with PAL colour TV bandwidth (even after dropping lots of pixels in flyback at the left edge), so the comparison would be better made with MODE 8, but the levels are still way off. Unless you (say) drop in some 330 ohm resistors... ;-) 
Line 108: Line 97:
  
 The QL video output was actually designed to suit RGB TTL monitors like the Microvitek and Phillips CM8833, which had been popular among users of the similarly colour-crippled Acorn BBC Micro, designed a couple of years earlier just up the road from Sinclair. The QL video output was actually designed to suit RGB TTL monitors like the Microvitek and Phillips CM8833, which had been popular among users of the similarly colour-crippled Acorn BBC Micro, designed a couple of years earlier just up the road from Sinclair.
- 
  
  ​======Origins of Design ======  ​======Origins of Design ======
 The QL's look was designed by Rick Dickinson, who also designed the cases for the ZX81 and ZX Spectrum. ​ His website also contains details of some of his sketches and ideas for the future development of the Sinclair QL, including the talked about Silicone Wafer expansion module with integral die cast heat sink and Polaroid back up battery. - see [[http://​www.flickr.com/​photos/​9574086@N02/​sets/​72157600854938578/​|Rick'​s pictures]] The QL's look was designed by Rick Dickinson, who also designed the cases for the ZX81 and ZX Spectrum. ​ His website also contains details of some of his sketches and ideas for the future development of the Sinclair QL, including the talked about Silicone Wafer expansion module with integral die cast heat sink and Polaroid back up battery. - see [[http://​www.flickr.com/​photos/​9574086@N02/​sets/​72157600854938578/​|Rick'​s pictures]]
- 
- 
- 
  • qlwiki/history.txt
  • Last modified: 2019/11/10 15:20
  • by vezhlys