Programs on tape

User avatar
gammaray
Posts: 586
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

Re: Programs on tape

Post by gammaray » Thu Dec 13, 2018 10:29 pm

How about this...

It is 7 or 4 right?

So this one is 7,4,7,4,4,4,4,7,4,4 (per mrtinb) 9,4,9,4,4,4,4,9,4,4
periodic analysis Dropout A.jpg
periodic analysis Dropout A.jpg (8.35 KiB) Viewed 2190 times
Last edited by gammaray on Thu Dec 13, 2018 11:05 pm, edited 1 time in total.
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

User avatar
mrtinb
Posts: 1063
Joined: Fri Nov 06, 2015 5:44 pm
Location: Denmark
Contact:

Re: Programs on tape

Post by mrtinb » Thu Dec 13, 2018 11:02 pm

Bits ser 4 or 9 pulses according to these docs. http://problemkaputt.de/zxdocs.htm#zx80 ... ttesignals
Martin
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube

User avatar
gammaray
Posts: 586
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

Re: Programs on tape

Post by gammaray » Fri Dec 14, 2018 3:46 am

IDEAL PERIOD.jpg
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

User avatar
TMAOne
Posts: 166
Joined: Thu Aug 16, 2012 6:56 pm
Location: Waterloo, Ontario, Canada

Re: Programs on tape

Post by TMAOne » Fri Dec 14, 2018 3:49 am

Yes, that is what I've been doing gammaray. "Periodic analysis"--looking at the size of the bits in the dropout, and then overlaying a "healthy" 4 or 9 bit pulse to replace them. Sometimes I can't really tell how the area should have looked, and then it becomes an "educated guess" at where the valleys are. :roll: The one illustrated was eventually repaired; I don't remember what the actual bits were in that instance.

Working now on Jørgen's 2nd upload of 17 more programs. Whew boy. Some of them fly straight with only a few "universal" shaping commands, others require that "bit level surgery" to get right. It's been a lot of work, but interesting.

Hmm, zip file of 14 more programs is too large to upload here. I'll put it in my dropbox for a time. Anyone who want them can download with this link: https://www.dropbox.com/s/4f2o8wgy6ui5z ... e.zip?dl=1

The other 3 are giving me grief.

User avatar
gammaray
Posts: 586
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

Re: Programs on tape

Post by gammaray » Fri Dec 14, 2018 4:12 am

I suppose the "dropout" vary widely in their character... yikes!

Using a sinusoid on these dropouts indicated start and stop.
sinusoid.jpg
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

User avatar
XavSnap
Posts: 757
Joined: Sat May 10, 2008 4:23 pm

Re: Programs on tape

Post by XavSnap » Fri Dec 14, 2018 11:45 am

Backgammon.wav [*]
Kampvogn.wav [*]
Kaenguro.wav [*]
Lysavis.wav [*]
Maanelanding.wav [*]
Slangen.wav [*]
Program 1.wav [Martin]
Program 2.wav [Martin]
Program 3.wav [Martin]
Program 4.wav
Program 5.wav
Program 6.wav
Program 7.wav
Program 8.wav
Program 9.wav
Program 10.wav [*]
Program 11.wav [*]
Program 12.wav [*]
Program 13.wav [*]
Program 14.wav [*]
Program 15.wav [*]

P_files.zip
(10.44 KiB) Downloaded 78 times
backgamon.p
JP.P
KAENGURU.p
Kampvogn.p
Lysavis.p
maanelanding.p
prg10_JP.p
prg11_TEGNING.p
prg12_Lysavis.p
prg13_TEGNING.p
prg14_Uhyrer.p
prg15_tolprogram.p
Slangen.p

Power 3000
Posts: 27
Joined: Sat Oct 06, 2018 8:13 am

Re: Programs on tape

Post by Power 3000 » Fri Dec 14, 2018 5:59 pm

more tapes
more tapes
broken tape
broken tape
I have more tape’s but i need to repair them, the first tranperent part before the real tape is broken, i will try to fix it and upload them.

It is great to see that it is possible to repaire some of the software, thank you for that.

Jørgen

Power 3000
Posts: 27
Joined: Sat Oct 06, 2018 8:13 am

Re: Programs on tape

Post by Power 3000 » Fri Dec 14, 2018 7:41 pm

I have now uploadet Biorytmer and Drive, I think Drive is missing the start of the program.

Jørgen

User avatar
mrtinb
Posts: 1063
Joined: Fri Nov 06, 2015 5:44 pm
Location: Denmark
Contact:

Re: Programs on tape

Post by mrtinb » Fri Dec 14, 2018 9:20 pm

Backgammon.wav
    • Thread post Working in 2 emulators but not on real hardware
Biorytmer.wav
Drive.wav
    • Thread post
Kaenguro.wav
Kampvogn.wav
    • English: Tank Thread post Seems working
Lysavis.wav
Maanelanding.wav
Program 1.wav
    • English: Joy Plot, Electric Organ, Graphics Thread post
    • Error at line 4340 (see inserted program listing in thread post)
Program 10.wav
Program 11.wav
Program 12.wav
Program 13.wav
Program 14.wav
Program 15.wav
Program 2.wav
Program 3.wav
Program 4.wav
Program 5.wav
Program 6.wav
Program 7.wav
Program 8.wav
    • Same as Program 1
Program 9.wav
Slangen.wav

Updating this post as programs gets fixed.
Last edited by mrtinb on Fri Dec 28, 2018 6:54 am, edited 12 times in total.
Martin
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube

User avatar
TMAOne
Posts: 166
Joined: Thu Aug 16, 2012 6:56 pm
Location: Waterloo, Ontario, Canada

Re: Programs on tape

Post by TMAOne » Fri Dec 14, 2018 10:12 pm

Sorry Jørgen, but actually both programs are missing the beginning of the file. I can do nothing with incomplete files.

Biorytmer looks like it may have been an accident in re-recording the clip to the computer. If so, then you can try that one again.

Ian

Post Reply