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<1…19202122232425…34>
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... Micael Haardt , section 8 ; The Floppy Bus : "The power connector consists ... /> 4 5 V DC

    He also says "The PC floppy ...
    harriusherbartio harriusherbartio January 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... the edge connector as the floppy drives and plate weigh a ... a more flexible use of floppy drives 4) And a handy support ...
    harriusherbartio harriusherbartio January 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... rail for the floppies
    4) I am pretty certain from ... to each connector on the "floppy" rail with the Yesico (and ...
    harriusherbartio harriusherbartio February 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... /> About 3.5 inch floppy drive power connectors. A lot ... older drives use a 4 pin right angle 0 ... when), the "special" 4 way version with extra plastic ... on most modern(-ish) floppy drives. The only difference ... will fit the older floppy drives. Sometimes not (well ...
    1024MAK 1024MAK February 2016 Hardware
  • Opus DiscoveryWould anyone have any materials about programming the Opus Discovery disk? I know it overrides ROM and uses microdrive commands, but I am more into b…

    ... raise interrupt when done?)
    4. If it does not work ... data bytes to/from the floppy controller, is done by Non ...
    tstih tstih February 2016 Development
  • Opus DiscoveryWould anyone have any materials about programming the Opus Discovery disk? I know it overrides ROM and uses microdrive commands, but I am more into b…

    ... that.
    Many Floppy Controller Chips can handle ... Opus.).

    4. The minimum speed for reading ... hxc2001.com/download/datasheet/floppy/thirdparty/FDC/WesternDigital/WD1772 ... hxc2001.com/download/datasheet/floppy/thirdparty/FDC/WesternDigital/ ...
    roko roko February 2016 Development
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    The 4 pin Male Molex to dual 4 Pin Floppy Drive Power Splitter Cables arrived today about one day after ordering so some things come quickly . I got 2 for a total of £4.98. Pretty good
    harriusherbartio harriusherbartio February 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... hinted at . But with these 4 supplies I should have a ... as the "Rolls Royce" of floppy drives

    So maybe ...
    harriusherbartio harriusherbartio February 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... /> Well there are at least 4 main methods of powering up ... adapter to power up the floppy discs . This is the project ... that should work.

    4) Then we have the next ...
    harriusherbartio harriusherbartio February 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... was the standard floppy drive and the PC floppy drive was the ... problems. This increased ease of floppy drive flexibility (which is one ... small : this is my Shughart floppy storage idea I have not ... the size of a PC floppy
    4) some wooden wedges and ...
    harriusherbartio harriusherbartio February 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... regulated supply (+/-5%, so between 4.75V and 5.25V). This ... if you use modern PC floppy drives. As some of these ...
    1024MAK 1024MAK February 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... was one of the cheap floppy power supplies I ordered ... misplaced. Nevertheless the "soldered on" floppy cable is a bit restrictive ... these improvements.

    4) Improvements are needed to ease ... hand tightness.This will make floppy drive removal a lot ...
    harriusherbartio harriusherbartio February 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    Ambiguous Grounds on the Floppy power supplies

    One ... cables that different types of floppy drive have in the rear ... connector (the female side has 4 nicely prepared copper fitments) . So ...
    harriusherbartio harriusherbartio February 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... have?

    The Opus floppy drive power connector is a ... drive connector a 3 or 4 cable job?

    But ... is another aspect :- Did the floppy drives themselves become more fragile ...
    harriusherbartio harriusherbartio February 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    More on the external floppy drive power supplies.

    ... power supply the SY-002-4-12 and the HWH-0528 ... :- the "cheaper looking" SY-002-4-12 only would get the ... />
    2) The SY-002-4-12 had a plastic case ...
    harriusherbartio harriusherbartio March 2016 Hardware
  • The Idiot's guide to 3.5 inch floppies on a +3All help gratefully received, including blow by blow instructions and tutorials. I am interseted in adding a floppy drive (3.5 inch) to my +3 as an …

    ... extends only to repairing 1/4 inch jack guitar leads! I ... get an old PC internal floppy drive from ebay. I used ...
    Guitari Guitari March 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... was so low!)

    4) The output cable . There were ... 3 outputs on a 4 way connector and this meant ... cables to the correct Opus floppy position. I propose to use ...
    harriusherbartio harriusherbartio March 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    Re above pic: floppy power supply

    I ... . (I call this power Option 4) . A variation (Option 4b) would ...
    harriusherbartio harriusherbartio March 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... Rover Discovery!) combined with the "floppy on top but out of ... by the removal of the floppy drives inside the case 3 ... already been done ,see above) 4) It would "almost retain the ...
    harriusherbartio harriusherbartio March 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... 2) And a new "floppy drive mounting plate" which ... that there is an extra 4 cms (or about 1 ... The idea is that the floppy "drive" plate can be ... all Opus DIY power and floppy cable "variations" provided the ... limitation when setting up the floppy drives. I hope it ...
    harriusherbartio harriusherbartio March 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... benefits of the proposed ultimate "floppy on top" super powered Ziggurat ... ,EPROM changes etc

    4) The relatively small "footprint" of ... used again to top the floppy drive case to support the ...
    harriusherbartio harriusherbartio March 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... list. So now there are 4 case design options.

    floppy on top" idea using the ... original case 4) Using a PC case.
    harriusherbartio harriusherbartio March 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... quick summary/revisit of the 4 case design options


    3) The "floppy on top" option used with ... "appropriate" yet again!)

    4) The PC version . This is ...
    harriusherbartio harriusherbartio March 2016 Hardware
  • Bizarre ZX Spectrum faults (also possibly relevant to Spectranet compatibility problems).I'm attempting to repair an issue 4A 48K ZX Spectrum and am encountering some very strange problems. For my own records I've given this computer the …

    ... interfaces (as also with the MB02+). Also using modern keyboard membranes ... the resistors should be between 4.7 kOhm and 8.2 ... kOhm. I prefer 4.7 kOhm and always used ...
    ingo ingo April 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... top plates for the floppy drives . This "plated" floppy drive system is ... system for the keyboard
    4) The modified Opus case with ...
    harriusherbartio harriusherbartio April 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... /> 2) I wanted the small floppy "drive securing" bolt heads separated ... "2 plate" approach is a floppy drive storage solution . I had ... add strength and provide a 4 sided loose "fix or fit ... interplay with different types of floppy drive so this is something ...
    harriusherbartio harriusherbartio May 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... work . So now I have 4 drive plates that just need ... off . I will stick at 4 for now as I am ... itself and by protecting the floppy drives whilst in storage Also ... the interaction of EPROM and floppy drive . There is still some ...
    harriusherbartio harriusherbartio June 2016 Hardware
  • Harlequin 128k??Hi peeps... I've seen that you can do a 128k version of the Harlequin board. Is it just the standard board with different chips or is it a dif…

    ... address decoder of AY.
    4. Modify clock at edge connector ... ) to fix some problem with MB02+

    I would recommend ...
    superfo superfo June 2016 Hardware
  • ZX-Uno moddingStarting with ZX-Uno case modding I have not yet received my ZX-Uno yet (it is in the post) but I know that I will have to do at least one mod …

    ... separate power supplies for the floppy drives and it worked OK ... .4) Why mention this now? Well , ...
    harriusherbartio harriusherbartio June 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... /> More about the PC style floppy drives:-
    Another thing I ... Opus Discovery ,with easily removable floppy drives , also took account of ... by the case on all 4 sides so the need for ... arguably the protective case enclosing floppy drives got better as time ...
    harriusherbartio harriusherbartio August 2016 Hardware
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