Search found 502 matches

by groepaz
Thu Apr 27, 2017 2:15 pm
Forum: Programming
Topic: c2n turbo loader experiment: 4kbit/s data on tape
Replies: 45
Views: 942

Re: c2n turbo loader experiment: 4kbit/s data on tape

However, this claim doesn't account for the attenuation that may have been added by the filter because the protocol is using a frequency that's out of the peak range. It may take very little reduction in amplitude for the tape to become unreadable. thing is, it doesnt just magically change. magneti...
by groepaz
Thu Apr 27, 2017 6:19 am
Forum: Programming
Topic: c2n turbo loader experiment: 4kbit/s data on tape
Replies: 45
Views: 942

Re: c2n turbo loader experiment: 4kbit/s data on tape

if the signal has considerably degraded over time however, when the signal degrades, amplitude doesn't change considerably - its the relative flux _timing_ that changes (which is why pre-compensation exists on high capacity floppy drives). and typically homecomputer tapes are written without pre-co...
by groepaz
Thu Apr 27, 2017 4:27 am
Forum: Programming
Topic: c2n turbo loader experiment: 4kbit/s data on tape
Replies: 45
Views: 942

Re: c2n turbo loader experiment: 4kbit/s data on tape

What's the effect of the filter anyway? To me on the software side it makes no difference. the analog signal that will go into the schmidt trigger (which makes a digital signal out of it so to say) will have lower amplitude ("volume"). as long as the amplitude doesnt become so low that th...
by groepaz
Wed Apr 26, 2017 8:53 pm
Forum: Programming
Topic: c2n turbo loader experiment: 4kbit/s data on tape
Replies: 45
Views: 942

Re: c2n turbo loader experiment: 4kbit/s data on tape

lol, what are you argueing over? with a properly aligned c2n its no problem. end of story. making a fuzz about it not working with badly aligned c2n is like complaining about not being able to drive straight with a flat tire.
by groepaz
Wed Apr 26, 2017 4:51 pm
Forum: Programming
Topic: c2n turbo loader experiment: 4kbit/s data on tape
Replies: 45
Views: 942

Re: c2n turbo loader experiment: 4kbit/s data on tape

no my post means "there are countless people who have transferred their turbo-tape recorded tapes many many MANY years after they have been saved to". and "the most popular turbo tape things were coded by sceners who most likely didnt have access to a scope nor would even knew what/ho...
by groepaz
Wed Apr 26, 2017 10:18 am
Forum: Programming
Topic: c2n turbo loader experiment: 4kbit/s data on tape
Replies: 45
Views: 942

Re: c2n turbo loader experiment: 4kbit/s data on tape

i somehow doubt *any* tape turbo was checked this way, ever. and yet most of them are pretty reliable anyway :)
by groepaz
Sat Apr 08, 2017 10:04 am
Forum: Programming
Topic: Making a random number in Assembly
Replies: 37
Views: 2059

Re: Making a random number in Assembly

to get a longer sequence you need a generator that creates a longer sequence :) monkey patching it will only make it worse
by groepaz
Fri Mar 03, 2017 7:00 am
Forum: Hardware and Tech
Topic: Sony PVM professional video monitor and the VIC20?
Replies: 41
Views: 648

Re: Sony PVM professional video monitor and the VIC20?

the 14" and 15" are also kind of portable.... gives you a free workout too :)
by groepaz
Thu Mar 02, 2017 1:52 pm
Forum: Hardware and Tech
Topic: Sony PVM professional video monitor and the VIC20?
Replies: 41
Views: 648

Re: Sony PVM professional video monitor and the VIC20?

"Framemeister" is the weapon of choice for that - its not cheap though
by groepaz
Thu Mar 02, 2017 5:55 am
Forum: General Topics
Topic: ** Revision 2017 Invitation / Website
Replies: 8
Views: 440

Re: ** Revision 2017 Invitation / Website

actually *most* people going to revision don't bring releases :)
by groepaz
Wed Mar 01, 2017 4:28 am
Forum: Hardware and Tech
Topic: Sony PVM professional video monitor and the VIC20?
Replies: 41
Views: 648

Re: Sony PVM professional video monitor and the VIC20?

btw, to come back the topic... if you are *really* anal about getting proper colours from both PAL and NTSC VICs, then a single multinorm CRT monitor doesnt cut it - you'll need one with a PAL tube and one with a NTSC tube, the properties of the phosphors are slightly different. (TFTs are beyond hop...
by groepaz
Wed Mar 01, 2017 4:01 am
Forum: Hardware and Tech
Topic: Sony PVM professional video monitor and the VIC20?
Replies: 41
Views: 648

Re: Sony PVM professional video monitor and the VIC20?

i was referring to slappy, not you.
by groepaz
Wed Mar 01, 2017 3:41 am
Forum: Hardware and Tech
Topic: Sony PVM professional video monitor and the VIC20?
Replies: 41
Views: 648

Re: Sony PVM professional video monitor and the VIC20?

are you ignoring now that PAL-N, a realworld video system, doesnt quite match with what you are babbling? try reading that page for once. that some monitors cant sync to a certain frequency is completely unrelated to the colour encoding, no more no less. exactly the same happens with plain monochrom...
by groepaz
Wed Mar 01, 2017 2:38 am
Forum: Hardware and Tech
Topic: Sony PVM professional video monitor and the VIC20?
Replies: 41
Views: 648

Re: Sony PVM professional video monitor and the VIC20?

oh please, you can read it up on wikipedia even. the different frequencies of the regular monochrome video signals are not directly related to the colour encoding used with them. there is PAL in 60Hz as well, for example. every PAL display, tv-sets and monitors, i have used could display NTSC compos...
by groepaz
Tue Feb 28, 2017 12:34 pm
Forum: General Topics
Topic: ** Revision 2017 Invitation / Website
Replies: 8
Views: 440

Re: ** Revision 2017 Invitation / Website

i think i'll skip it again, too much pc centric artsyfarts for me :)

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