Improving Timex/Sinclair Tape Loading

Discussions about Sinclair ZX80 and ZX81 Hardware
Lardo Boffin
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Re: Improving Timex/Sinclair Tape Loading

Post by Lardo Boffin » Sun Mar 04, 2018 10:06 pm

Thanks for all the encouraging words and your time Mark! Also a rather impressive de-solder and bit of socketing there!
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
Iss 3 ZXVid
TS 1000 iss 3, ZXPand AY, ZX8-CCB, ZX-KDLX & ChromaSCART
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Various Spectrum 48ks plus a DIVMMC future and SPECTRA

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gammaray
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Re: Improving Timex/Sinclair Tape Loading

Post by gammaray » Mon Mar 05, 2018 6:54 am

The new socket will help when the rest of get sent the wrong chip...add it to the parts list for the kit. In fact I am adding sockets to everything I have! :D
5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM

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TMAOne
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Re: Improving Timex/Sinclair Tape Loading

Post by TMAOne » Tue Jun 19, 2018 6:26 pm

It's been a while. Is there any movement on this?

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1024MAK
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Re: Improving Timex/Sinclair Tape Loading

Post by 1024MAK » Tue Jun 19, 2018 10:34 pm

Yeah, I've been distracted with other things.

Hopefully at the weekend, I can do some more. I'll then post an update here.

Mark

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gammaray
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Re: Improving Timex/Sinclair Tape Loading

Post by gammaray » Tue Jun 19, 2018 11:16 pm

Good to know I am not the only one! :oops: :lol:
5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM

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TMAOne
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Re: Improving Timex/Sinclair Tape Loading

Post by TMAOne » Fri Jul 20, 2018 7:44 am

I just used the "slave tape" output on my 1980's prototype (pictured at the beginning of this thread) to copy an entire tape for a friend. The clone seems to load even more reliably than the original! Can't wait to see these kits distributed, once they pass muster.
Ian

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1024MAK
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Re: Improving Timex/Sinclair Tape Loading

Post by 1024MAK » Mon Jul 23, 2018 1:59 pm

Afternoon ‪Lardo Boffin‬

Okay first, sorry that this has taken a while. Too many distractions :cry: :oops:

So after repairing my audio sine wave generator (a PP3 leaked and corroded all along one of the connection leads) I have completed some bench testing.

Along the way, I discovered another track break. Now repaired. I also tidied up a couple of other connections.
IMG_7525.JPG
IMG_7524.JPG
So as far as bench testing is concerned, it works fine :D. I'll post the results a bit later (need to convert to a forum friendly format).

Now just have to find a ZX81 cassette tape...

Also can you please send me your current address via PM so that I can return it to you.

Mark

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1024MAK
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Re: Improving Timex/Sinclair Tape Loading

Post by 1024MAK » Mon Jul 23, 2018 4:17 pm

Test results.png
Bench test results

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XavSnap
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Re: Improving Timex/Sinclair Tape Loading

Post by XavSnap » Tue Jul 24, 2018 6:51 pm

Thanks Mark.
:ugeek:

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TMAOne
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Re: Improving Timex/Sinclair Tape Loading

Post by TMAOne » Wed Jul 25, 2018 1:20 pm

That's great work Mark, thank-you.

The table seems to show the unit very stable once the "lit" threshold is reached. It never occurred to me to quantify it like that; I just know the darn thing works.

Here's hoping for your problematic tapes Lardo,...

Ian

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