The Shareware PLUS Commodore 64 & 128 Blog

Commodore 128 RGBI to RGBA Adapter by Digital Audio Concepts RGBI to RGBA Adapter by Digital Audio Concepts This is taken from the Digital Audio Concepts website - "...I've been working on an adapter to connect a C128's 80 column video port directly to a video-game-to-VGA upscaler board such as the GBS-8200 or 8220 (i.e. ones sometimes called "JAMMA" boards). The C128 produces digital RGBIHV output pretty much identical to the old CGA video standard, while some of those upscaler devices require analog RGB signals (without a separate intensity signal), and composite H+V sync. This board seeks to address this mismatch. My intent here is to reasonably duplicate the standard C128/CGA palette as described in the article on Wikipedia , including a suitable "brown fix" circuit. At one end is the C128 video port connection. At the other end is a row of five holes to receive the wires from the scaler board's video-input pigtail, and two more...

The Datel Midi Interface is now on sale, It is fully compatible with cynthCART v2 using the Mini Xpander+, you can plug in and use both cynthCART and the Datel Midi Interface! For just £39 plus postage. Updated 1st January 2025

We have sold the 586220 Diagnostic Cartridge for many years and there has always been other sellers with the harness, but sadly those sellers are no longer trading and others are selling the harness for over $80, so we are now making them. The PCBs for the user port have now arrived and the harnesses are on the way from China. Hopefully a great way to get the Diagnostic cartridge, Harness with user port cartridge, full printed manual all for under £50! Updated 1st January 2025

cynthCART 64 Version 2 Analogue Digitizer cynthCART is a cartridge for the Commodore 64/128 that turns the computer into a standalone analog synthesizer. Cynthcart's key-command user interface allows it to be played and controlled without a monitor, making it especially suitable for live performance. The original Commodore 64 piano keyboard overlay can be used and Datel, Passport, Sequential, and Kerberos MIDI interface cartridges are now supported. New Version 2 Features - 30 preset sound patches Arpeggiator, portamento, vibrato, and tremolo effects Analog filter control and effects Control of attack, release, and other sound parameters MIDI support including pitch bend, patch changes, and controllers On-screen help Color visualizer display Mono stack, 3-voice mode, and 6-voice mode (with second SID) No latency SID hex editor for advanced users Ability to turn off video chip to reduce noise PAL and NTSC pitch tables with automatic selection Copies itself to RAM (cartr...

The new GEORAM 512 RAM Pack is now in stock. Simply plugs in your cartridge port and adds 512K RAM to your Commodore 64/128. Originally designed by Berkeley Softworks just for GEOS v2.0r, but later supported by lots of software releases. Supplied boxed with cartridge & manual. Available from stock. To order email sales@sharewareplus.com  Updated 1st January 2025

We have now finished assembling and testing the new Black Magic Cartridge from DDI, with up to 320 disk based programs crammed on 4x 8 MBits 27c801 EPROMS (2 on reverse) its looking to be the best cartridge release ever! We are busy putting the documents together and the first pre ordered units will be shipped shortly packed with lots and lots of games. The new Black Magic website is now up and running (subject to final updates), you can grab a Black Magic PCB for £8 and the new ROM sets are now online for free download. You will find all you need over on  http://www.sys64738.net Available from stock. Updated 1st January 2025