Search found 529 matches

by groepaz
Wed Nov 22, 2017 10:09 am
Forum: Hardware and Tech
Topic: HASL for cartridges? (split/OT from: Cheese & Onion)
Replies: 28
Views: 66

Re: HASL for cartridges? (split/OT from: Cheese & Onion)

using sandpaper in any female edge connector will grind off the gold plating in it. Also, if you blow on the stuff you grinded, there is no telling where this conductive material will land, possibly causing all sorts of damage inside your VIC. you use fine grained sand paper and dont apply a lot of...
by groepaz
Wed Nov 22, 2017 7:27 am
Forum: Hardware and Tech
Topic: HASL for cartridges? (split/OT from: Cheese & Onion)
Replies: 28
Views: 66

Re: New physical cartridge release: Cheese And Onion

I know of absolutely no way of cleaning the cartridge port connector of a VIC-20. you are surprising in multiple ways, every time. its not rocket science really: you take a piece of cardboard or wood or plastic or whatever else you have laying around that fits between the contact, wrap a piece of f...
by groepaz
Tue Nov 21, 2017 6:20 pm
Forum: Hardware and Tech
Topic: HASL for cartridges? (split/OT from: Cheese & Onion)
Replies: 28
Views: 66

Re: New physical cartridge release: Cheese And Onion

it wont cause any serious damage... perhaps the contacts corrode a bit (because of the different metals) but thats all (and it can be fixed/cleaned easily). back in the days tons of cartridges existed that didnt have gold plated contacts, and you didnt see machines dying left and right because of th...
by groepaz
Tue Nov 21, 2017 6:16 pm
Forum: Hardware and Tech
Topic: What bandwidth oscilloscope for 1541 alignment?
Replies: 10
Views: 115

Re: What bandwidth oscilloscope for 1541 alignment?

200kHz is barely enough to work with audio.... useless for anything else :=)
by groepaz
Tue Nov 21, 2017 6:13 pm
Forum: General Topics
Topic: PC COM port to Vic interfacing
Replies: 7
Views: 125

Re: PC COM port to Vic interfacing

*shrug* how you connect them depends on their logic =P you cross rts/cts for nullmodem, but thats probably not what you got there. it makes sense to have only one of the two (the PC is kinda infinitely fast, the other side may be slow), but i forgot which goes in which direction =P
by groepaz
Tue Nov 21, 2017 11:00 am
Forum: General Topics
Topic: PC COM port to Vic interfacing
Replies: 7
Views: 125

Re: PC COM port to Vic interfacing

the hardware flow control is essential for slow devices (like the VIC20, or any other 8bit computer for that matter). thats pretty much the reason for why it exists :)
by groepaz
Fri Nov 17, 2017 7:44 am
Forum: General Topics
Topic: PC COM port to Vic interfacing
Replies: 7
Views: 125

Re: PC COM port to Vic interfacing

you pretty much want one that has RTS/CTS wired up - i'd just look (eg on jim brains site) for a c64 userport rs232 interface, it should work on vic20 too
by groepaz
Thu Nov 16, 2017 5:58 pm
Forum: Games
Topic: Paddle Games
Replies: 44
Views: 1363

Re: Paddle Games

As such, I can only assume that the pot itself is at fault. no. that article talks about the jitter you get from dirty potentiometers *when turning* them. thats an entirely different problem. the same paddles that give crazy jitter here (when *not* turning them) on the vic20 give pretty stable valu...
by groepaz
Wed Nov 15, 2017 5:59 pm
Forum: Games
Topic: Paddle Games
Replies: 44
Views: 1363

Re: Paddle Games

If it was going to do anything at all, it would be there. if only :) [I think I got it... So you generate the charge sequences locally with a crystal of some sort? Thereby, bypassing the VIC entirely, except to tell it when something happened!] what the circuit needs to do is first "look"...
by groepaz
Wed Nov 15, 2017 4:07 pm
Forum: Games
Topic: Paddle Games
Replies: 44
Views: 1363

Re: Paddle Games

gave it a quick try, cap in parallel to the paddle certainly has some interesting side effects - but it doesnt solve this problem :=) no time atm to make some measurements... but it might be worth trying to add a cap from VCC to GND right at the VIC, it may or may not improve the situation. that sai...
by groepaz
Wed Nov 15, 2017 6:45 am
Forum: Games
Topic: Paddle Games
Replies: 44
Views: 1363

Re: Paddle Games

I don't see a reason why the check should be *disabled*. As proven by the driver an Amiga-mouse can be polled on the VIC-20 as well, so it should be possible to provide this functionality on the v5 as well (as it already *was* possible on the v3). Thanks since there is exactly zero software for the...
by groepaz
Tue Nov 14, 2017 3:16 pm
Forum: Games
Topic: Paddle Games
Replies: 44
Views: 1363

Re: Paddle Games

v5 will have jumpers so you can override the autodetection, so you can also use amiga mouse (or ST mouse) - i could enable the middle button check for vic20 though if there is demand for this. and sure, paddles only work for one player :) its quite nice though, the games i tried play better with mou...
by groepaz
Tue Nov 14, 2017 9:04 am
Forum: Games
Topic: Paddle Games
Replies: 44
Views: 1363

Re: Paddle Games

I think nowadays, it should be pretty simple to make a 'perfect' or 'ideal' paddle for the VIC-20 using tricks similar to those employed by the 1351.

totally. in fact, i have implemented this for the upcoming micromys v5 adapter - and its rock stable.
by groepaz
Sat Nov 11, 2017 9:27 am
Forum: Collecting and History
Topic: One VIC-20 Release for Zoo 2017 ...
Replies: 5
Views: 211

Re: One VIC-20 Release for Zoo 2017 ...

Mike wrote:Just the so-called 'sceners' consider themselves as being too 8) to post here in Denial.

just like you (and me) consider themselves too 8) to use their BBS? :)
by groepaz
Wed Nov 08, 2017 10:35 am
Forum: Games
Topic: Paddle Games
Replies: 44
Views: 1363

Re: Paddle Games

added Space Snake and Star Post to that list... tokra: try replacing the two existing caps. perhaps try larger values (two or three times as much or so). adding one near the VIC may help too. what you can also try is adding a cap in parallel to the poti inside the paddle (in fact, some paddles alrea...

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