Search found 584 matches

by groepaz
Tue Nov 21, 2017 11:00 am
Forum: Hardware and Tech
Topic: PC COM port to Vic interfacing
Replies: 8
Views: 344

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: Hardware and Tech
Topic: PC COM port to Vic interfacing
Replies: 8
Views: 344

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: 1646

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: 1646

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: 1646

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: 1646

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: 1646

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: 1646

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: 6
Views: 366

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: 1646

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...
by groepaz
Wed Nov 08, 2017 10:24 am
Forum: Hardware and Tech
Topic: Cartridge designs released - Eagle PCBs
Replies: 35
Views: 808

Re: Cartridge designs released - Eagle PCBs

If that's true I wonder why Commodore didn't do it that way? Maybe they had a ton of stock to get rid of or something.

two possible reasons:
1) they can produce the ICs themselves and then they are very cheap
2) ICs could be machine picked/placed and soldered - that makes the production cheaper
by groepaz
Fri Oct 27, 2017 8:08 pm
Forum: Hardware and Tech
Topic: 1541 Read error
Replies: 33
Views: 513

Re: 1541 Read error

You didn't include a quote of what you were answering to... you can safely assume that if someone doesnt explicitly quote ... then he is directly answering to the previous post in the thread. This site mentions a method with an alignment disk or commercially prepared. I guess that could be any boug...
by groepaz
Fri Oct 27, 2017 12:17 pm
Forum: Hardware and Tech
Topic: 1541 Read error
Replies: 33
Views: 513

Re: 1541 Read error

I was never able to format a 5.25" floppy disk in a 1541. Some people reported it caused the destruction of the R/W of the drive when they tried repeatedly. WAT. you are not making any sense. and i was referring to the supposed difference of SD and DD disks - not DD vs HD, which we all know is...
by groepaz
Thu Oct 26, 2017 10:42 am
Forum: Hardware and Tech
Topic: 1541 Read error
Replies: 33
Views: 513

Re: 1541 Error

alignment issues can be ruled out quite easily - only (and ONLY) when formatting/saving/loading on the same drive works, but loading factory made disks ("original disks") does not, then it is an alignment issue. when you get random problems even with disks written on that drive, then align...
by groepaz
Thu Oct 26, 2017 6:55 am
Forum: Hardware and Tech
Topic: 1541 Read error
Replies: 33
Views: 513

Re: 1541 Error

afaik there is no difference in the material, so that would be really odd (and isnt it a 1541 compatible drive?)

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