Amiga 4000 Repair – Joystick on port #2 always goes in one direction

February 23rd, 2016 No comments
Commodore Amiga 4000 - Joystick on port #2 always goes in one direction

Defect:

  • The joystick on port #2 always goes in one direction (left).

Repair:

  • Replaced the two 74HCT166 (SMD) that control the logic of both joystick ports have been eaten by the acid leaked from the battery and a cause of a short circuit both are dead. (please see photos)

Gallery of the repair:

Commodore Amiga 1200 Full Recap

February 23rd, 2016 No comments
Commodore Amiga 1200 Full Recap

Commodore Amiga 1200 Full Recap.

Commodore Amiga 3000 REV 8.9 (B2) Full Recap

February 23rd, 2016 No comments
Commodore Amiga 3000 REV 8.9 (B2) Full Recap

Commodore Amiga 3000 REV 8.9 (B2) Full Recap.

Restoring the original configuration of a ACT Elek. Apollo 1260

February 23rd, 2016 3 comments
Restoring the original configuration of a ACT Elek. Apollo 1260

Restoring the original configuration of a ACT Elek. Apollo 1260

Works that have been made:

  • Cleaning the pad and weld residues on the solder side of the 68060 CPU.
  • Removing the KIT/Hack to use a SIMM 64MB instead of 32MB. The KIT / Hack not working well.
  • Restoration of the power PCB of the CPU and installation of the BD242 transistor (TIP32) in place of a voltage regulator. (Now the PCB is in original state)
  • Someone needs to explain me how the fuck do you can use a voltage regulator type LT1085(84) fixed 3.3V instead of a Transistor!
  • Overclocking with 80MHz oscillator.

Gallery:

Commodore Amiga CD32 Full Recap

February 23rd, 2016 No comments
Commodore Amiga CD32 Full Recap

Commodore Amiga CD32 Full Recap.

Gallery of the repair:

Commodore 128 Garbage Screen & Random Memory Problem repair

February 23rd, 2016 1 comment
Commodore 128 Garbage Screen & Random Memory Problem repair

Commodore 128 Garbage Screen & Random Memory Problem repair

Defect:

  • Garbage Screen in 128 mode and Random Memory problems in 64 mode.

Repair:

  • Replaced the MOS 8502 CPU.

Note:

  • The problem of the Garbage Screen / Out of Memory / Memory problems of the Commodore 128 is not always a problem of Ram / Multiplexer or Bank Switching.

Gallery of the repair:

Texas Instruments Floppy Disk Controller ROM (EPROM) upgrade

February 23rd, 2016 No comments
Texas Instruments Floppy Disk Controller ROM (EPROM) upgrade

This upgrade kit for the standard TI disk controller card allows 80 track drives to be used, such as a 3 1/2″ 80 track floppy.

The modified code supports 40 and 80 tracks for SSSD and 80 tracks for DSSD, whatever drive is designated as the 40 track drive, either #1 or #3, supports 40 track DSDD.

The update is very simple to make, you have to remove the original ROMS and replace with two sockets and insert the two 2532 EPROMS pre-programmed.

Gallery:

Download: FDC Latest ROMS (408)

Australian Commodore 64 (replacement case for the C64)

February 16th, 2016 4 comments
Commodore 64 Australian (Original Color - not Photoshopped)

The Commodore 64 Australian is an replacement case for the C64.

It’s an C64c look-a-like and was sold in Australia. This replacement case came on the market when Commodore introduced it’s new model, the C64C.

Gallery:

(Italian) Jurassic News numero #57

February 16th, 2016 No comments

Sorry, this entry is only available in Italian.

Categories: Magazine, News & Rumors, Today

durexForth v1.6.1 (Forth language for Commodore 64)

February 16th, 2016 No comments

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 v1.6.1 (D64/CRT) + Manual (474)

source: csdb.dk

Commodore Amiga 2000 PSU Upgrade

February 16th, 2016 4 comments
Commodore Amiga 2000 PSU Upgrade

Commodore Amiga 2000 PSU Upgrade.

I have replaced the PCB of the Commodore Amiga 2000 power supply because tired and died after many years of use and there was not the slightest sense of the repair.

The difficulty to the present day is finding a power supply ATX v1.0 with -5v (white wire) in the later versions of ATX PSU was removed, the Amiga 2000 uses this voltage for the ZORRO cards.

*UPDATE*

If you have trouble to finding an ATX power supply with the -5v output (white wire on the connector) you could use a voltage regulator LM 7905 to adjust the voltage from -12v (available in all ATX power supplies also of the latest generation) to -5v.

Due to the missing TICK signal you need to move the jumper J300 to the position 2-3 and if you have an Amiga 2000 REV4x you need to move the jumper J34 to the position 2-3.

Below the work was done.

Gallery:

source: John “Chucky” Hertell Blog

Commodore Amiga 4000 PSU Upgrade

February 15th, 2016 2 comments
Commodore Amiga 4000 PSU Upgrade

Some months ago i have decided to upgrade the power supply of my Commodore Amiga 4000 with a good ATX power supply, compact and with a high amperage.

I have found the SFX POWER 2 300w from the German Company: Be Quiet. The power supply is perfectly suited to my needs.

Below the work was done, anything of complex if not fit the PCB inside the power supply of the Commodore Amiga 4000.

Gallery:

C64 Big Game Pack: Cauldron +4DF, Jump Ninja +3HF, Frogger Pre2 …

February 10th, 2016 No comments

Some new games or tools (Cracked / Trained or Unrealeased) for Commodore 64 have been released from your favorites groups.

Titles:

  • Cauldron +4DF
  • Jump Ninja +3HF
  • Vault Man 2 Preview +2
  • Jump Ninja
  • JANI +2 [seuck]
  • JANI [seuck]
  • Blocks +J
  • Meadowbrook Nine
  • Minesweeper 64
  • Petscii-Poker 2016
  • Flying Cobra RX +2 [seuck]
  • Underland Preview
  • Frogger Arcade Prv 2
  • Guardian +4DGH
  • Little Knight Arthur +6D
  • Little Knight Arthur +6HD
  • Rupert and the Toymaker’s Party +3DG
  • Hideous Bill and the Gi-Gants +3D
  • Crow Boy Preview &D
  • Hideous Bill and the Gi-Gants +4DGH
  • Chichen Itza
  • Blasteroids 101% +6DGHF
  • Dragonfire 101% +2DGMF
  • Rock Maze (Reset Edition) +4PH 100%
  • Rock Maze (Reset Edition)
  • Rock Maze (Reset Edition) +4PH
  • Beach Head 1a ReM V2 + Source Code
  • Miner 2049′er ReM V2 + Source Code
  • Castles of Dr Creep 3 ReM V2 + Source Code
  • Lode Runner X ReM V2 + Source Code
  • Lode Runner(s) ReM V2 + Source Code
  • EF C64GS Collection 200-1 Bugfix [easyflash]
  • Manic Miner ReM + Source Code
  • Return of Heracles +M
  • Boulder Dashes ReM + Source Code

Download: All Games in One Archive (1164)

source: csdb.dk

durexForth v1.60 (Forth language for Commodore 64)

February 4th, 2016 No comments

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 v1.6.0 (D64/CRT) + Manual (435)

source: csdb.dk

durexForth v1.5.3 (Forth language for Commodore 64)

January 29th, 2016 No comments

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 v1.5.3 + Manual (433)

source: csdb.dk