Category Archives: diy jiffydos rom

Diy jiffydos rom

The Commodore line of 8-bit computers used a disk drive called the Commodore later the and This venerable drive is a classic and deserves to be treated us such. For this reason, I try to use mine as little as possible and keep it as more of a showpiece in my museum. There are other drive emulators out there. I put emulator in quotes, because the SD2IEC is not a true emulator, rather it emulates some functions of the based on commands passed to it.

This can be a problem, since anything that attempts to change code in the will fail to work. This means many copy protection schemes, fastloaders, and other such utilities are simple not going to function on the SD2IEC devices. The Pi on the other hand is a true Commodore emulator! It uses a copy of the original ROM images from the Commodore and a full emulator to present itself to the computer as a true drive in every way.

It just works. In addition to being a full emulator, it has a hardware LED, and piezo buzzer to provide the sights and sounds of the drive working, along with an OLED screen for browsing SD card images. Did I mention you can 3D print some awesome retro cases to put it in? If you plan to 3D print your case, you can get the files on Thingiverse. The first thing I did before building my Pi is to simply prototype it on a breadboard to make sure everything actually works.

This is a simple way to find mistakes and test ideas before putting the Pi on a soldered board which is much more difficult to change after the fact. The RPi 4 is not yet supported and there is no timeline for supporting it if ever. The Pi comes with a wiring schematic that is decent enough to follow.

However, I know so many people prefer simpler Fritzing style diagrams for these types of projects. This is the official Pi wiring schematic for this project.

Note that the official schematic does not show connection of the OLED display. You will need to make a change in the options file to enable this, covered later in this tutorial. I used the circuit boards listed above and scored them with a razor knife, snapped them, and then finished off the rough edges with a little sandpaper.

On the back of the OLED circuit board, I simply jumped all of the grounds together to make it simpler to wire. It might not be the most elegant solution, but It works just fine. The final wire is tied to a common ground. You can find links in the parts list above.

The Commodore 64 and most other Commodore machines use 5 volt serial lines.

Use SD Cards on Commodore 64 (SD2IEC Reader)

This was very common in the s. Today, most everything uses 3. The Raspberry Pi uses 3.In this mode, the standard CBM Kernal is 2nd. I got the exact same information when I did it with the Ultimate II attached. So that worked as well.

Find the tutorial on how to do it here. Great article. As I understand it, 2 character roms, 1 basic rom and 2 kernals reside on the one chip. Thanks for the comment. So no programming was needed.

diy jiffydos rom

I therefore fiddled around with my own EPROM chip for testing purposes before realizing that the RI ROMs were actually working after all and switching between Kernals had to be done as described in the post above. I then dumped the content of the original C64Reloaded ROM using the software that came with the burner. The JiffyDOS file is in binary format. Thanks very much for the detailed explanation.

Going to take some time and do this for myself. Great site BTW! I just added a jumper to my C64R using your instructions. I too prefer the default CBM Kernal. I did a search on the net to see if that is normal and it is. Hi everybody. I have a C64 Reloaded mk2 board with a patched jiffydos kernal with the rainbow colours. However, when I switch to this kernel it shows the dull blue jiffydos screen and not the colours.

When I use the same kernal image in Vice on my PC it does have the rainbow colours. Anyone any idea??? Kind greetings, marco. B Assy Rev. C Assy Rev. A Assy Rev. B 1 Assy Rev. B 2 Assy Rev. B 3 Assy Rev. B 4 Assy Rev. C 1 Assy Rev. A 1 Assy Rev. A 2 Assy Rev. A 3 Assy Rev.Cookie Policy Our website uses cookies. By using our website, you consent to our use of cookies in accordance with our Cookies Policy. Click here to learn about cookie settings. JavaScript seems to be disabled in your browser.

You must have JavaScript enabled in your browser to utilize the functionality of this website. To keep your file structure neat, create directories for your files. Something like this. You can perform a disk swap if you need to, but you also can avoid the need to in the first place!

This should load and run filebrowser. To navigate the menu either use cursor keys or Joystick in port2. LST file, then press Q to quit filebrowser. Now press the diskswap button to select the first disk button nearest the data cable. LST file, it will loop back to the beginning of the list.

These commands can be entered from Basic as well as from your freezer card menu. OPEN1,new address,15,"XW":close1 - this will save settings to eeprom required if you want to set new device address as default.

If you have any problems formatting your SD card, try the official SD Card formatting tool found here. This is how your Commodore deals with upper and lower case.

It's best to make sure your filenames are all lowercase if you want an easy read! SD2IEC loading speeds are the same as a real But it can be sped up by fastload roms or cartridges. JiffyDos is the best overall fastloader solution available for most Commodore computers, but JiffyDos is a ROM chip that needs to be installed inside your computer. This does mean that you might have to use a soldering iron if your ROM is not in a socket.

Another solution is cartridges. FCIII can be pricey but it does support freezing. EFLr can be found here. This has been fixed an alpha release of the firmware. A special thanks to Johan for getting to the bottom of this. Alpha releases can be found here www. Sign Up for Our Newsletter:. I agree to my personal data being stored and used to receive the newsletter.Seems like the C64 Kernal is the same as J.

I think nobody in the years has updated the Jiffy codeuseful is make a difference between the two roms. JiffyDOS is officially sold by Jim Brain, so mate get some fucking life and stop share things like this.

Go tell that to every guy that ever pirated c64 software, and while your at it tell Jim Brain to stop selling the Zoom Floppy as it enables the pirating of copyrighted software. He is probably fucking Turkish loser as I see…. To simplify things Jim Brain chose to sell all those different numbered versions as version 6. Vice is a much better emulator. Use it instead. Here is the directions. They are in a foreign language, but just follow the pictures, and you will be fine.

Commenti 12 Lascia un commento. Rispondi Cita.

diy jiffydos rom

Ozkan Go tell that to every guy that ever pirated c64 software, and while your at it tell Jim Brain to stop selling the Zoom Floppy as it enables the pirating of copyrighted software. So mate go get a fucking life you loser and keep your opinions to your self. Thanx guys for the files!! Laserboy Er1c Vice is a much better emulator. It is a rather big kernal file 32mbC64 is 8mb.

Nome richiesto. Sito web. Abbonati al feed dei commenti. Leave this field empty. Lingua English Italian. Recent Posts U64 Streamer v1. They are also here on:. Spam Blocked 1.When I got back home from work not one, not even two…but three parcels had arrived for me. Christmas has arrived early as each little package contained a new toy to spruce up my rediscovered Commodore 64 well two and the other for my other c This cable is also compatible with the my other Commodore computers too.

The EasyFlash cartridge is a flash storage cartridge for the C With this cartridge I can store multiple C64 cartridge games, tools and utilities and have them load almost within an instance.

It also supports. Much, much better in my opinion. Once completed, switch on the cartridge and hit the built in reset switch — which is also rather handy as it can be used as a regular reset switch. Moving on to the JiffyDOS Rom, once this is installed, it will dramatically increase disk loading times when using my SD2IEC including file transfer to the Easyflash cart and Jon has kindly installed a toggle switch so that I can turn off this feature when loading software from tape.

You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. Main menu Skip to content. About me. Well, at least after all these years the cartridge port still functions! Easy Prog Once completed, switch on the cartridge and hit the built in reset switch — which is also rather handy as it can be used as a regular reset switch.

I may be some time…. Like this: Like Loading Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:. Email Address never made public. By continuing to use this website, you agree to their use. To find out more, including how to control cookies, see here: Cookie Policy.As you can image, i was a little nervous working on it and not wanting to stuff this one up.

After work I dropped by my local Maplins store and picked up a couple of two-way toggle switches for each C I found this rather handy JiffyDOS manual. Tablets are great! With the correct ROM chip identified for removal, I carefully yep sweating a lot now removed it with an IC removal tool. Surprisingly, it popped out without too much of a fight. Next I dremelled out a small hole in the side of the c64 case to house the new toggle switch and also soldered the JiffyDOS fly leads to said toggle switch.

Everything put back together and ready for testing, and the original rom chip wrapped up in my spares box. Strangely enough, it rectified itself and is back to the expected free bytes. Hey there. Just hope you didnt burn out the traces by then. Its better to cut off legs the soldered chip and remove it. I told you its like welded on there. Yep, will have to be careful.

Dirty but it works xl. Cheers Mike. Considering getting myself a solder station in the sales. Hi, did you manage to do the c64c in the end. Will let you know how I get on.

diy jiffydos rom

I finally managed to do it. The solder melts at a rediculously high temperature. Finally I got out the butane soldering torch and it started to come loose. Hey Lee, fantastic news glad you managed to get it sorted. Heat — suck — done. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Retrocomputing Stack Exchange is a question and answer site for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear.

C64 Reloaded JiffyDOS

It only takes a minute to sign up. What was the main reason for this? Did some games or other software programs not support JiffyDOS? I realize a switch is a convenient way of not having to open the hardware so my question isn't on the switch The reason for the switch? Most JiffyDOS vendors include the switch and socket hardware. Sign up to join this community.

The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Why do many JiffyDOS users install a toggle switch to disable it?

Subscribe to RSS

Ask Question. Asked 2 years, 11 months ago. Active 2 years, 11 months ago. Viewed 1k times. Guess: It wasn't compatible with all software, so sometimes you needed to switch it off to make software work.

Active Oldest Votes. JiffyDOS uses the space occupied by the tape routines in the Kernal so you can't use a tape and JiffyDOS together, therefore having the means to revert back to the original Commodore Kernal is necessary. Sign up or log in Sign up using Google.

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Programming tutorials can be a real drag.


thoughts on “Diy jiffydos rom

Leave a Reply

Your email address will not be published. Required fields are marked *