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3 x Commodore Amiga 1200 full Recap

October 28th, 2015 2 comments

Replacing electrolytic capacitors Commodore Amiga 1200.

As you can see from the photos, the latest motherboard (Gallery full Recap Amiga 1200 #3) of Amiga 1200 suffered the classic problem of leaking capacitors.

Gallery full Recap Amiga 1200 #1:

Gallery full Recap Amiga 1200 #2:

Gallery full Recap Amiga 1200 #3:

Amiga 4000 badly Distorted Clipped Saturated audio Repair

October 28th, 2015 9 comments

Amiga 4000 badly Distorted Clipped Saturated audio Repair.

The problem is quite simple to find. You have to make some measurements on the integrated SMD LF347 (Op AMP) with the computer running and no sound.

You need to measuring pin 1 and pin 7 and should have a voltage of about 2.5V if the voltage as in my case (see photo) is  of 11.43v and 11.37v. Something is not working.

At this point you must also perform a new measurement on the pin 14 and pin 8, if also in this case it has a higher voltage of 2.5v evidently there is’ something that doesn’t work or with the LF347 or with the 750ohm resistor (R440 and R430).

The other three measurements to be done are the two input voltages, pin 4 should be about 12V and -12V on pin 11 approximately. In my case (see picture) are + 12.28v and -12.04v and are fine.

The third measurement is the Voltage Reference (Vref), this is very important, should not be less than 2v or greater than 3v. In my case (see photo) was 5.30v. This problem could be caused either by the circuit that provides the VRef (2 resistors and two capacitors) or just the same ic that creates problems with the Vref input.

In my case the failure was caused of the integrated SMD LF347 that i have replaced with a LM324. After replacing the voltages are back to normal, in the example photo you can see the Vref at 2.33v

The Amiga sound now works very well.

I have repaired several Commodore Amiga 4000 with the LF347 burned and from my personal experience can say that the acid leakage of capacitors C404, C433 and C443 make some short circuits on pins of the LF347 that obviously dies.

Audio before and after the repair:

Gallery:

Cyberstorm MK1 & 3640 socket oscillator for overclocking

October 28th, 2015 No comments

Nothing of easier to put a socket for the oscillator to allow overclocking.

Gallery:

Yet another Commodore 64 repaired

October 28th, 2015 No comments
Yet another Commodore 64 repaired

Yet another Commodore 64 repaired

Defect:

  • White Flashing Screen then Black Screen.

Replace parts:

  • 2 x 74LS257
  • 1 x 6569 VIC-II

Note:

  • After replacing the VIC-II (6569) the screen has stopped flashing but there was still some component broken.

Fixing & Modding MacBook AIR MagSafe Power Adapter

October 28th, 2015 No comments

I did this repair for a friend of mine after i heard that the new power supply cost 89.00 Euros !!

I have inserted a female RCA connector thus avoiding that the problem of “broken” cable happen again.

Gallery:

Filter Capacitor RIFA removal from the PSU of a Grundy NewBrain

October 28th, 2015 2 comments

After the explosion of the filter capacitor (see video) i have removed the charred component.

Gallery:

Video:

Nintendo NES Hidden Sound Channels Fix + EverDrive N8

October 28th, 2015 1 comment

The original Famicom (Japanese Nintendo) consoles are superior in design compared to the American/European NES.

One long forgotten feature is the extra sound channel, this extra channel was disconnected on US/EU console and removed from US/EU games. Castlevania 3 is a classic example. The original Japanese version has a much different theme song.

Below the photos of the fix to get the extra channel on the US/EU consoles.

Gallery:

source: krikzz.com

CBM prg Studio v3.5.0 released

October 25th, 2015 2 comments

CBM prg Studio Version 3.5.0 is released. There are a lot of new features in this version. I’d really appreciate it if you report any bugs you find or have any suggestions/comments.

CBM prg Studio allows you to type a BASIC or Machine Code program in using a nice Windows environment and convert it to a ‘.prg’ file which you can run on an emulator, or even a real C64 / VIC20 or PET if you’re feeling brave and have the right kit.

CBM prg Studio is the result of merging C64PrgGen and VIC20PrgGen. Adding new features and fixing bugs in two apps which were 95% similar was a bit of a nightmare so merging them made sense.

It was also a good opportunity for a face lift and to add some new features, such as:

  • Programs are project based, meaning all related source files, sprite files etc. are kept in one place and multiple source files can be linked more easily.
  • Tabbed MDI.
  • Syntax highlighting.

What CBM prg Studio isn’t is a front-end for tok64, cbmcnvrt, bastext or any other tokeniser / detokeniser / assembler. It’s all been written completely from scratch.

Improvements:

  • Assembler:
    • Fragment assembly.
    • Debug directive.
    • Easier label exporting.
    • Custom character mapping for TEXT directive.
  • General:
    • Overlap detection when building mixed BASIC and Assembly sources.
    • Generate and Launch doesn’t rebuild the source if no changes have been made.

Bugs Fixed:

  • Assembler:
    • Better error reporting for invalid WORD values, specifically with arithmetic.
    • TEXT strings containing ‘;’ characters were truncated.
    • Crash when dragging text around a source file.
  • Debugger:
    • SBC instruction not setting/clearing carry flag properly.
  • BASIC:
    • Statistics tool not coping with ‘rem’ in strings.
  • General:
    • If the confirm quit dialog is turned off and changes have been made there is no save option.

Download: CBM prg Studio v3.5.0 (481)

source: ajordison.co.uk

Bidding ended to €22.827,00 for the Commodore 65 on Ebay.de

October 21st, 2015 No comments

source: ebay.de wikipedia

Categories: Event(s), News & Rumors, Today

1541 Ultimate II: New firmware v3.0 beta 5

October 18th, 2015 No comments

A new version of the firmware for the interface 1541 Ultimate II is released. This version runs only on the 1541 Ultimate II cartridge (new fpga).

Release notes 3.0 beta 5:

Major:

  • BUGFIX: Processor’s Data Cache stored result of IO read, causing wrong values to be read from the cache

Minor:

  • C64 Keyboard scan made a bit slower  (not tested)
  • Fixed configuration drop down
  • Fixed clock settings
  • Mount disk made first option in D64 file type
  • Updated Final 3 cart.

Release notes 3.0 beta 4 (first version released on Facebook):

  • The FPGA platform has gotten an upgrade. There is now a faster RISC processor on board (~10 times faster), and I have re-written the USB host controller, which has become ~50 times faster. The external memory of the FPGA also runs faster, and delivers now also approx. 7 times more bandwidth. With this faster platform, it has become possible to run a multithreaded OS.
  • There is now support for USB2LAN adapters, and 3.0beta4 runs two services: a (raw-)telnet (VT100) server that brings up the menu, and an FTP daemon for basic file transfer.
  • There is now support for reading the directories of D71 and D81 files in the browser.
  • There is a ‘CD’ command in the software IEC, and other improvements have been made to the soft IEC driver.
  • There is now a copy command in the file browser, that works with C=C/C=V (or CTRL-C / CTRL-V). It is not that fast, but for small files it works. You can also copy files from inside a D64/T64 to another location in the file system. The other way around is still under development, but will soon be possible as well.
  • UltiCopy is disabled for now, because it still needs to be ported to the multi-threaded operating system.

Download: 1541 Ultimate II Firmware v3.0 Beta 5 (677)

source: 1541ultimate.net

Categories: Firmware, News & Rumors, Today

USB Stick STM32 (Gotek) HxC Floppy Emulator: Firmware v3.0.6.6a

October 11th, 2015 No comments

Jean-François DEL NERO (who’s behind the HxC SD Floppy Emulator) recently has released a version of the HxC emulator firmware that is compatible with the STM32 chip used in the Gotek floppy emulators.

This means that the great functionality of the HxC SD emulator is now available on cheaper and more widely available hardware.

The bootloader to convert the Gotek floppy drive in HxC compatible must be purchased on the website HXC 2001 by sending an email to Jean-François DEL NERO. The price of the bootloader is one-off 10 Euro per Gotek that you want to update. Future updates of the software are free and can be made from a USB stick

The HXC Usb (Gotek) firmware supports:

Release notes Firmware USB HxCFloppyEmulator v3.0.6.6a

  • Some more random crash issues corrected into the disks images managers.
  • USB Stack updated.
  • Firmware Update strongly recommended!

Download: USB Stick STM32 (Gotek) HxC Firmware v3.0.6.6a (691)

source: hxc2001.com

C64 Game: The Last Ninja +11DM 100% / Scavenger Hunt 3D +1D …

October 11th, 2015 No comments

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

Titles:

  • Nuclear Nick Preview +
  • Reddest Baron
  • Skate Rock USA +2D
  • Gauntlet USA +2D
  • Rocket Smash EX 101% +5HD
  • Uniblast
  • Sentinel +3DG
  • House of Usher +7MHDG    
  • Indiana Jones und der Blaue Diamant [fixed]
  • Shutdown +3
  • Wizard Saga Preview +3
  • MAH +3M 100%
  • Daffy Duck [easyflash]
  • Bugs Bunny [easyflash]
  • Duck Tales [easyflash]
  • Scooby & Scrappy Doo [easyflash]
  • Road Routine Demo
  • Nuclear Strike Force [seuck]
  • Deadly Evil +20D
  • Nuclear Strike Force +2H [seuck]
  • Deviants +24D
  • Tusker [easyflash]
  • The Last Ninja +11DM
  • Tarzan Goes Ape V1 Preview
  • Retro Reto Pan [spanish] [seuck]
  • The Last Ninja +11DM 2.0
  • Scavenger Hunt 3D +1D
  • Final Cartridge III+
  • Motorman Preview
  • Caren and the Tangled Tentacles (V1.1)
  • Stormbringer +21D
  • Sprint 1
  • Sprint 1 +2
  • Blap ‘n Bash +3HD
  • Blap ‘n Bash
  • The Last Ninja +11DM 100%

Download: All Games in One Archive (1047)

source: csdb.dk

USB Stick STM32 (Gotek) HxC Floppy Emulator: Firmware v3.0.6.4a

September 27th, 2015 No comments

Jean-François DEL NERO (who’s behind the HxC SD Floppy Emulator) recently has released a version of the HxC emulator firmware that is compatible with the STM32 chip used in the Gotek floppy emulators.

This means that the great functionality of the HxC SD emulator is now available on cheaper and more widely available hardware.

The bootloader to convert the Gotek floppy drive in HxC compatible must be purchased on the website HXC 2001 by sending an email to Jean-François DEL NERO. The price of the bootloader is one-off 10 Euro per Gotek that you want to update. Future updates of the software are free and can be made from a USB stick

The HXC Usb (Gotek) firmware supports:

Release notes Firmware USB HxCFloppyEmulator v3.0.6.4a

  • Random crash issues corrected into the disks images managers.

Release notes Firmware USB HxCFloppyEmulator v3.0.6.3a

  • Some user interface delays added to make it more usable ;)
  • “Press select for the Setting menu” text added.

Download: USB Stick STM32 (Gotek) HxC Firmware v3.0.6.4a (590)

source: hxc2001.com

A new donation from Rossano Rossano Toccaceli.

September 27th, 2015 No comments

A new donation from Rossano Rossano Toccaceli.

Donated items:

  • Philips MSX-2 8235
  • Commodore Floppy Drive 1541 (without case)
  • Amiga Keyboard.

Thanks Rossano.

Categories: Donations, News & Rumors, Today

USB Stick STM32 (Gotek) HxC Floppy Emulator: Firmware v3.0.6.2a

September 21st, 2015 No comments

Jean-François DEL NERO (who’s behind the HxC SD Floppy Emulator) recently has released a version of the HxC emulator firmware that is compatible with the STM32 chip used in the Gotek floppy emulators.

This means that the great functionality of the HxC SD emulator is now available on cheaper and more widely available hardware.

The bootloader to convert the Gotek floppy drive in HxC compatible must be purchased on the website HXC 2001 by sending an email to Jean-François DEL NERO. The price of the bootloader is one-off 10 Euro per Gotek that you want to update. Future updates of the software are free and can be made from a USB stick

The HXC Usb (Gotek) firmware supports:

Release notes Firmware USB HxCFloppyEmulator v3.0.6.2a

  • Normal mode : Endless init loop corrected.

Release notes Firmware USB HxCFloppyEmulator v3.0.6.1a

  • Amiga : Disk change detection corrected : Desert Strike, Dizzy Crystal and probably others games disk change detection are now working properly.
  • Direct access mode : Correct interface mode set when activated from an PC HD image.

Download: USB Stick STM32 (Gotek) HxC Firmware v3.0.6.2a (696)

source: hxc2001.com