Today I Received...

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robheaton
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Re: Today I Received...

Postby robheaton » Wed Feb 05, 2020 5:55 pm



Current Retro Hardware :-
ZX80 Clone, ZX81 + Chroma + ZXPand + Zeddynet, Just Speccy 128, Speccy 48K x2, Spectrum 128 +2, BB Sinclair QL + Trump Card Clone, Aurora + Super GC + QubIDE.
BBC Model B 32k + Datacenter + Z80 Tube, BBC B+64K, BBC Master 512, BBC Master 128k + Datacenter & 6502 Tube, Risc PC x2.
Amiga 600, Amiga 1200, Commodore 64 x3, Commodore 128, Commodore 128DCR, C64 Ultimate, VIC 20, Sega Megadrive, Mega CD + 32X, Sega Megadrive II + Mega CD II, Sega Saturn.
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dilwyn
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Re: Today I Received...

Postby dilwyn » Wed Feb 05, 2020 6:01 pm

fatbob_gb wrote:Retro Computer Shack only operate between Thursday 2pm and Sunday 5pm - the wiring for the QL Scart cable is shown here https://www.retrocomputershack.com/SCART-DESIGNS/Sinclair-QL/index.html

Thanks, that shows a change in wiring from mine. That diagram shows five resistors, whereas on the one they supplied me only 4 resistors, there is no resistor between the orange cable and pin 16.
No shops selling components around here, so I might order another cable from them as it'd be handy to have a second lead for the other QL anyway.


Dilwyn
All things QL: see www.dilwyn.me.uk
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mk79
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Re: Today I Received...

Postby mk79 » Wed Feb 05, 2020 8:23 pm

dilwyn wrote:Although I might add that it looks like the wiring of the Retro Computer Shack QL-SCART cable is suspect, in that SCART pin 16 should go to QL pin 4 (Composite Synch) not QL pin 1 (composite PAL)
Pretty much doesn't matter which one, as long as it's above 0.4V. This only signals that the TV should switch to RGB mode. I have the cable from RCS, too, and as far as I know it's fine.


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mk79
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Re: Today I Received...

Postby mk79 » Wed Feb 05, 2020 8:25 pm

dilwyn wrote:
fatbob_gb wrote:Retro Computer Shack only operate between Thursday 2pm and Sunday 5pm - the wiring for the QL Scart cable is shown here https://www.retrocomputershack.com/SCART-DESIGNS/Sinclair-QL/index.html

Thanks, that shows a change in wiring from mine. That diagram shows five resistors, whereas on the one they supplied me only 4 resistors, there is no resistor between the orange cable and pin 16.
I dimly remember that they changed the cable to fix a problem with SGC, that change might be related to it. There was a thread in the forum many years ago.


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NormanDunbar
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Re: Today I Received...

Postby NormanDunbar » Thu Feb 06, 2020 7:35 am

Morning Dilwyn,

dilwyn wrote:No shops selling components around here, so I might order another cable from them as it'd be handy to have a second lead for the other QL anyway.


what value of resistor do you need? I have a box of the things, various values. Most are 1/4 watt and quite small - so should fit into a SCART connector. I'll send you a couple in the post. If tolerance is important I have 5% and 1%.


Cheers,
Norm.


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M68008
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Re: Today I Received...

Postby M68008 » Sat Feb 08, 2020 10:58 pm

Ammunition for some QL and Q-emuLator projects:

QLGC.jpg


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dilwyn
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Re: Today I Received...

Postby dilwyn » Sun Feb 09, 2020 1:43 pm

Well, given up with the Simple Video Scalar and conclude it doesn't work with QL.

Tried all the different wirings, even used the wiring the late Lee Privett/Mr Navigator used when he published the article about it.

The Simple Video Scalar device works with everything else such as DVD players attached to it.

The QL with all of the cables work fine on all TV sets it was connected to. QL just won't work with the Simple Video Scalar and JS Technology haven't been able to help.

Conclusion: DON'T BUY THIS DEVICE.


Dilwyn
All things QL: see www.dilwyn.me.uk
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mk79
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Re: Today I Received...

Postby mk79 » Mon Feb 10, 2020 2:19 pm

M68008 wrote:Ammunition for some QL and Q-emuLator projects:
Good to see you tinkering again :-)


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XorA
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Re: Today I Received...

Postby XorA » Mon Feb 10, 2020 2:27 pm

mk79 wrote:
dilwyn wrote:
fatbob_gb wrote:Retro Computer Shack only operate between Thursday 2pm and Sunday 5pm - the wiring for the QL Scart cable is shown here https://www.retrocomputershack.com/SCART-DESIGNS/Sinclair-QL/index.html

Thanks, that shows a change in wiring from mine. That diagram shows five resistors, whereas on the one they supplied me only 4 resistors, there is no resistor between the orange cable and pin 16.
I dimly remember that they changed the cable to fix a problem with SGC, that change might be related to it. There was a thread in the forum many years ago.


Yeah I reported the SGC problem to them and AFAIK they fixed the cable in later ones!


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dilwyn
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Re: Today I Received...

Postby dilwyn » Mon Feb 10, 2020 4:03 pm

XorA wrote:
mk79 wrote:
dilwyn wrote:Thanks, that shows a change in wiring from mine. That diagram shows five resistors, whereas on the one they supplied me only 4 resistors, there is no resistor between the orange cable and pin 16.
I dimly remember that they changed the cable to fix a problem with SGC, that change might be related to it. There was a thread in the forum many years ago.


Yeah I reported the SGC problem to them and AFAIK they fixed the cable in later ones!

Yes, the mod is indicated on the label on the cable when it arrived. Do you happen to remember what the specific issue was when a Super Gold Card was plugged in?

On my Gold Card QL both the original 1.1 and the new 1.3 cables work fine without any visible difference in picture quality.


Dilwyn
All things QL: see www.dilwyn.me.uk

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