Search found 41 matches

by Overdoc
Wed Mar 20, 2024 7:46 am
Forum: Buy, Sell, and Trade
Topic: [FOR SALE]: Commodore VIC20/VC20 set with diskdrive, ramexpansion, printer, datasette, joystick, etc.
Replies: 4
Views: 441

Re: [FOR SALE]: Commodore VIC20/VC20 set with diskdrive, ramexpansion, printer, datasette, joystick, etc.

Hi again,

Which components of the set would you be interested in?
I don't want to sell the VIC separately, but I could sell you the diskdrive, printer, datasette separately, since I have more than one of them.
Just let me know....thanks :)
by Overdoc
Wed Mar 20, 2024 7:40 am
Forum: General Topics
Topic: modded VIC 20 kernals?
Replies: 14
Views: 569

Re: modded VIC 20 kernals?

On the C64, it is possible to try out a modified KERNAL without a permanent change on the mainboard by just doing a RAM copy and changing CPU port/PLA action to let the CPU access the RAM under the ROM. Alternatively, some involved circuitry in a cartridge can also replace the KERNAL from the outsi...
by Overdoc
Fri Mar 15, 2024 4:15 am
Forum: General Topics
Topic: modded VIC 20 kernals?
Replies: 14
Views: 569

Re: modded VIC 20 kernals?

True, running Minimon in $9800..$9FFF certainly is a nice trick. :) However, the disadvantage is that it needs an additional cartridge which is blocking the expansion port, so you will also need an expander. In my case, I already have a kernal/eprom adapter and I can still add 4 more kernals to the ...
by Overdoc
Thu Mar 14, 2024 9:26 am
Forum: General Topics
Topic: modded VIC 20 kernals?
Replies: 14
Views: 569

Re: modded VIC 20 kernals?

Thanks for the correction, you are right, it is the other way round, the C64 is not compatible with the 1540 drive, but the VIC is compabiel with the 1541 anyway, also without switching it back to 1540 mode.
So there is no need for kernal modding :)
by Overdoc
Thu Mar 14, 2024 7:18 am
Forum: General Topics
Topic: modded VIC 20 kernals?
Replies: 14
Views: 569

Re: modded VIC 20 kernals?

Well, maybe there are some major differences in the designs of the VIC 20 and C64 kernals, but on a C64 I can switch between Jiffydos, normal system, Dolphindos, Prologicdos, Speeddos, TurboTape Kernal, etc, etc. without the computer crashing, even though there is ofcourse functionality removed in a...
by Overdoc
Thu Mar 14, 2024 2:26 am
Forum: General Topics
Topic: modded VIC 20 kernals?
Replies: 14
Views: 569

modded VIC 20 kernals?

I wonder if there are any modded VIC 20 kernals around? Apart from Jiffydos as well as the Dead-Test and Ram-Test kernals (which are for diagnostics, only) I am not aware of any others? I am thinking about some mods like a built-in memory monitor (like the one from C64's Dolphindos?), or a built-in ...
by Overdoc
Thu Mar 14, 2024 2:07 am
Forum: Buy, Sell, and Trade
Topic: [FOR SALE]: Commodore VIC20/VC20 set with diskdrive, ramexpansion, printer, datasette, joystick, etc.
Replies: 4
Views: 441

Re: [FOR SALE]: Commodore VIC20/VC20 set with diskdrive, ramexpansion, printer, datasette, joystick, etc.

Not at this time. I would really like to sell it all in one set, but if no buyer comes up within a couple of weeks or months, then I might also consider ripping it apart and selling the components individually. (which would perhaps even bring me more $ for it, but also more work, and a lesser good f...
by Overdoc
Sun Mar 10, 2024 1:06 pm
Forum: Buy, Sell, and Trade
Topic: [FOR SALE]: Commodore VIC20/VC20 set with diskdrive, ramexpansion, printer, datasette, joystick, etc.
Replies: 4
Views: 441

[FOR SALE]: Commodore VIC20/VC20 set with diskdrive, ramexpansion, printer, datasette, joystick, etc.

I am selling a beautiful, complete VC20 (German name for VIC20) set, which consists of: Commodore VC20 Computer in nice working condition, with power supply, video/audio cable, and manual Commodore VC1541 Floppy in white 1540 style case the drive is fully VC20 compatible because it has an original 1...
by Overdoc
Wed Jan 24, 2024 10:00 am
Forum: Games
Topic: looking for 8KB game cartridges with joystick support
Replies: 3
Views: 358

Re: looking for 8KB game cartridges with joystick support

Thanks! I know this list (FUNET/Zimmers), but not sure which of them support a joystick? Only tried Radar Rat Race, which does, and (I think it was) Sky is Falling, which does not? I would like to make several Multi-Carts, two with 8x 8k games, and two with 4x 16k games. Each of both with joystick s...
by Overdoc
Wed Jan 24, 2024 8:33 am
Forum: Games
Topic: looking for 8KB game cartridges with joystick support
Replies: 3
Views: 358

looking for 8KB game cartridges with joystick support

Hello,

I have a 'Multi-Cartridge' (using a 64KB 27C512 Eprom), which I would like to feed with 8x 8KB VIC games, which support joystick input for playing.
Is there maybe a list with all known 8KB cartridges for the VIC, which also shows if they do support a joystick or not?

Thanks!
by Overdoc
Mon Jul 16, 2018 3:43 am
Forum: General Topics
Topic: cartridge questions
Replies: 2
Views: 3055

cartridge questions

Hi VIC Lovers, I recently had a look at VIC (game)cartridges, and noticed that most of them are 8K, which use Memory Location BLK5 $A000-$C000, and don't require any other additional ram. Some also seem be 16K ones, which seem to occupy BLK5 $A000-$C000, as well as BLK3 $6000-$8000, wich no addition...
by Overdoc
Fri Jun 15, 2018 2:20 am
Forum: General Topics
Topic: Jiffydos VIC 20 PAL and Jiffydos 1541 ?
Replies: 3
Views: 4345

Re: Jiffydos VIC 20 PAL and Jiffydos 1541 ?

Hi Eslapion,

Great :)
Thanks for the explanation and confirmation that it works.
by Overdoc
Thu Jun 14, 2018 3:56 pm
Forum: General Topics
Topic: Jiffydos VIC 20 PAL and Jiffydos 1541 ?
Replies: 3
Views: 4345

Jiffydos VIC 20 PAL and Jiffydos 1541 ?

Hi VIC fans, I am wondering if a PAL VIC-20 with Jiffydos installed (PAL version) will actually work together flawlessly with a 1541 drive with Jiffydos installed as well? Afaik a PAL VIC-20 runs roughly 25% faster than a PAL C64, so therefore the 1540 has a different rom with correct timing for the...
by Overdoc
Tue Jun 12, 2018 8:45 am
Forum: Buy, Sell, and Trade
Topic: Behr-Bonz 2015
Replies: 378
Views: 131343

Re: Behr-Bonz 2015

I would also like to take a PAL one.
Hope they will be available again, soon?
Thanks :)
by Overdoc
Tue Jun 05, 2018 3:26 pm
Forum: Hardware and Tech
Topic: Flickering or Offset but Correct Characters
Replies: 4
Views: 4841

Re: Flickering or Offset but Correct Characters

This looks to me like bad contact of the VIC.
I had very similar picture today in my VIC-20 which I use for testing.
The problem was gone after I bent the pins to correct position (a bit inward to make better contact in the original socket), and re-seated the VIC.