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Commodore 64 ASSY 250407 Empty PCB
Apple Monitor IIgs (A2M6014Z) Focus problem workaround.
The horizontal measuring was made calculating the ledge at the base of the monitor.
Unfortunately, this monitor suffers from a serious problem of image quality.
The monitor become very hot and the adjustment resistance (trimmer) of the Focus controls that is inside the flyback loses its original value.
After nearly an hour of operation, the image becomes blurred and we must adjust the trimmer of the focus located inside the monitor, that’s why i have made this modification to the external case of the monitor.
The flyback is NOT longer exists as a spare parts.
Datanetics Apple Keyboard Fix.
Datanetics Apple Keyboard Fix.
After a few cold solder joints redone the keyboard works almost perfectly.
Todo:
- The “V” key is totally dead.
- The keys are a bit tired, don’t return always in the original position.
Overall is fine.
Datanetics Apple Keyboard *update*
I found a temporary solution for the tired keys they don’t return always in the original position. I have put a small spring (see the picture). Now the keys works correctly.
About the “V” key completely dead, i have desoldered it and i have tried to spray a air into the slots without having any results, so i have tried a extreme thing, i have used the key switch like a whistle. ;-D I have blown inside several times, the result is the key switch now are working again. I have made the same thing for the “right arrow”.
Macintosh Plus (Sad Face) Repair
Macintosh Plus repair.
Defect:
- Mac sad face with error code not readable.
Replaced parts:
- 2 x ROM (342-0341-B / 342-0342-A) replaced with two EPROM 27C512 (pinout compatible)
Note:
All roms that i have found on the net or sent by friends are not working.
I had to do a dump of the Rom of my Macintosh Plus and at this point everything has worked immediately.
Apple IIe STK Asic Clone (Orange) Repair
Apple IIe STK Asic Clone (Maybe Orange) repair.
Defect:
- Short-circuit on all voltages.
- Black/Garbage screen.
Replaced parts:
- 10 x Tantalum Capacitor 4.7uf (replaced with Electrolytic Capacitors)
- 3 x RAM OKI M3764A-15 in Short-circuit.
- 1 x ROM 1 (EPROM 27128)
Note:
I have to thank immensely my friend Alessandro Polito for providing me the dump of the ROM 1 of the Orange (Apple IIe Asic Clone)
Download:
Commodore 64 ASSY 250425 Empty PCB
Example of replacing exhausted Electrolytic Capacitors

Gallery:
Example of replacing exhausted Electrolytic Capacitors.
My advice is always to replace all capacitors although at first view does not seem exhausted with acid leakage.
Revision 2014: C64 – Official demo party results
This is the official demo party results (C64 Only) from Revision 2014. See also the official homepage for more informations.
C64 4K Intro:
- 3 – Back in the Saddle by Razor 1911.
C64 Game:
- 2 – Immensity – Revision 2014 Edition by Dév.
WiLD Demo:
- 1 – 10 Orbyte by Tristar & Red Sector Incorporated.
Mixed Graphics:
- 4 – Lost in the Forest of Owls by Chorus, Resource, Singular.
- 5 – Party Train Incoming – Mind the GAP by Tristar & Red Sector Incorporated.
- 6 – Social Net by Arsenic, Oxyron.
- 8 – Devil or Angel? by Resource.
Mixed Music:
- 2 – Dekadance by Darklite.
- 4 – Spiral Silicon Towers by Panda Design.
- 5 – Specular Highlight by Lft.
- 9 – Fuzzy Brawl by Edge of Panic.
Mixed Demo:
- 3 – Redefinition by Fairlight, Offence.
- 6 – Panopticon by Brainstorm, Traction.
Download: Revision 2014 Party stuff (1651)
durexForth v1.3 (Forth language for Commodore 64)
Forth, the Language.
Forth is a different language. It’s aged and a little weird.
What’s cool about it? It’s a very low-level and minimal language without any automatic memory management. At the same time, it easily scales to become a very high-level and domain-specific language, much like Lisp. Compared to C64 Basic, Forth is more attractive in almost every way.
It is a lot more fast, memory effective and powerful. Compared to C, specifically cc65, the story is a little different. It’s hard to make a fair comparison. Theoretically Forth code can be very memory efficient, and it’s possible to make Forth code that is leaner than C code. But it is also true that cc65 code is generally much faster than Forth code.
Download: durexForth v1.3 + Manual (1070)
source: noname.c64.org
Javatari v4.1 (Atari 2600 emulator)
Javatari is a multiplayer Atari 2600 emulator written in pure Java with no external libs.
Features:
- Client-Server multiplayer mode. Runs great in low-latency networks such as LANs.
- Drag&Drop and Copy&Paste of ROM files or URLs. Very easy to try ROMs from websites!
- Scanlines and TV screen emulation modes.
- Real Atari console user interface.
Changelog:
- New concept: Savestate Cartridges!
- Store emulator state as Savestate Cartridge files to disk any time (press F8)
- Savestate Cartridges can be distributed and loaded as normal ROMs.
- Savestate Cartridges can also be embedded as auto-load ROMs.
- Support for Starpath/Supercharger Tape ROM format.
- Bugfixes and improvements.
Download: Javatari JAR v4.1 (Needs Java 6 or greater) (1127)
source: javatari.org
(Italian) Jurassic News numero #50
Sorry, this entry is only available in Italian.
C64 Game: Cosmos +7MD 101% / The Way +4ED / Rat +2D …
Some new games or tools (Cracked / Trained or Unrealeased) for Commodore 64 have been released from your favorites groups.
Titles:
- Noxus
- The Rat +2D
- Chickhack &D
- Kur pelite tu tuceji +
- Cosmos +7D
- The Caves of Oberon +2D
- Color Flood +2
- Cosmos +
- Cosmos +7MD 101%
- International Karate II [fixed]
- Cosmos +7MD
- Wavy Navy +3HD +Pic
- Bomb Ace +2D
- Cosmos V1.2
- The Way +4ED [german/english]
- 2048 +2
- Cosmos V1.1
- Monstics Mystery II Preview &D +Pic
- The Impossible Game
- The Impossible Game +1MF [pal/ntsc]
Download: All Games in One Archive (3051)
source: csdb.dk
Here is something to repair …
Someone has to repair these computers! ;-D
In the photo you can see: Commodore 64(C) motherboard, Commodore Amiga 500 motherboard, Commodore Amiga 600, Sinclair QL, Commodore 128 motherboard and some Amiga keyboard.
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