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JiffyDOS

JiffyDOS Reloaded MK2

October 19, 2018October 16, 2018 by MtnBuffalo

Tired of waiting ages for your old floppies to load? One way to speed up transfer times between disk and the Commodore 64 is by substituting the standard CBM Kernal with an enhanced Disk Operating System. In this context, JiffyDOS was created by Mark Fellows in 1985 and … Read more

Categories C64 Hardware, C64 Mods, C64 Reloaded
Commodore 64. Mod of the year 2016. Breadbox64.com

Mod of the Year 2016

November 11, 2020December 7, 2016 by MtnBuffalo

A year has passed since Mod of the Year 2015 was presented on these pages (link). That mod was based on a very discolored breadbox case which was spray-painted. It also had heaps of holes to accommodate potentiometers and plugs for the audio signals. As this years mod, Mod … Read more

Categories C64 C, C64 Hardware, C64 Mods
Commodore 64 Reloaded with a modded Kernal ROM. This is how to modify the color (background, border and text) of the start screen. More on breadbox64.com

C64 Kernal Mods

December 20, 2017April 12, 2016 by MtnBuffalo

I have wanted to do some Commodore 64 Kernal modding for quite some time and finally decided to give it a go. I did not want to do anything fancy, I just wanted to customize the text of the C64 start-up screen and modify the … Read more

Categories C64 C, C64 Hardware, C64 Mods, C64 Reloaded
Commodore 64 mod of the year 2015 with a paint mod, sid2sid stereo mod, sd2iec mod, potentiometer mod, JiffyDOS mod, capacitor mod, voltage regulators mod, heatsink mod, PLA mod, RESTORE key mod and power led mod

Mod of the Year 2015

November 11, 2020December 14, 2015 by MtnBuffalo

…well almost… The machine still needs some new colored keycaps (hurry up Phase5!!!), a domed sticker at the bottom and a cold reset button using an Arduino Pro Mini. But I gotta have some modding goals for 2016, right? This machine has been build from … Read more

Categories C64 Breadbox, C64 Hardware, C64 Mods, C64 Music, C64 Repairs

JiffyDOS Tutorial

May 25, 2018December 8, 2015 by MtnBuffalo

The C64 Reloaded ROMs IC holds 2 Kernals and 2 Character sets located at specific memory locations on the EPROM. Each of the ROMs can quite easily be replaced in order to have two unique character sets (i.e. English & Danish) and two different Kernals (i.e. … Read more

Categories C64 Hardware, C64 Mods, C64 Reloaded

C64 Reloaded JiffyDOS

May 25, 2018August 13, 2015 by MtnBuffalo

On the C64 Reloaded boards, all ROM images have been burned into a single EPROM chip. As described by Individual Computers, this ‘…gives some extra space for a second Kernal ROM and a second character set’. As I will be using the C64 Reloaded with my JiffyDOS … Read more

Categories C64 Hardware, C64 Reloaded
Modding the Commodore 1541 Diskette drive with JiffyDOS for increased disk reading and writing speeds.

The 1541 JiffyDOS Mod

September 29, 2021August 12, 2015 by MtnBuffalo

I got this floppy disk drive cheap off a guy who bought it in the early 80’s for his business. As his company went out of business before he started to actually use the drive, it was almost like new when I got it. The only thing … Read more

Categories C64 Hardware, C64 Mods, C64 Peripherals

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