Search Results

Keyword: ‘commodore’

Commodore Amiga 600 (Black Screen) Repair

November 5th, 2014 2 comments

Commodore Amiga 600 (Black Screen) Repair

Defect:

  • Black Screen.

Replaced parts:

  • 4 x Electrolytic Capacitor 10uF 35v
  • 2 x Electrolytic Capacitor 22uf 35v

Note:

The Amiga 600 Motherboard looks in good conditions; no traces of a acid leakage from capacitors, as usually happens on Amiga 600/1200/4000, but all had a too high ESR (Equivalent Series Resistance).

Commodore Educator 64 Repair

November 2nd, 2014 No comments

Commodore Educator 64 Repair.

Defect:

  • The video signal was distorted.
  • Smoke coming out from the monitor.

Diagnosis:

  • Short circuit in the horizontal video section.

Replaced parts:

  • Replaced 1 x Diode MR 854
  • Replaced 1 x Electrolytic capacitor 470uF 25v
  • Replaced 1 x Resistor 1 Ohm / Tolerance 10%

Working Commodore Educator 64

Commodore Dual Drive Floppy Disk Model 4040 Repair

October 30th, 2014 2 comments

Commodore Dual Drive Floppy Disk Model 4040 Repair

Defect:

  • Completely dead with all LEDs lit up like a christmas tree.

Replaced parts:

  • Replaced 1 x LM340K (7812) Voltage Regulator (VR1)
  • Replaced 1 x 7406 Hex Inverter Buffers/Drivers (UJ6)
  • Replaced 1 x 6522 (VIA) Versatile Interface Adapter (UM3)
  • Replaced 1 x 6504 8-Bit CPU (UH3)
  • Replaced 1 x 6502 8-Bit CPU (UN1)

Note:

The cause of many problems was the previous repair. It was replaced the voltage regulator LM340K (7812) with a LM338K (Adjustable Regulators). The two components are not compatible and have a different pinout.

Download:

CBM prg Studio v3.2.0 released

October 29th, 2014 No comments

CBM prg Studio Version 3.2.0 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.

New features:

  • PTEXT and NULL directives.
  • NULL added to GenerateTo directive.
  • Colour printing.
  • Source overview.

Bug Fixed:

  • Assembler:
    • Reformatting code.
    • Some arithmetic problems with variables.
  • Basic:
    • Some screen code fixes.
    • Renumbering TRAP keyword (BASIC 3.5 & 7)
    • Mixing upper/lower case in DATA statements.
    • Wrong load address for some C128 BASIC projects.
  • General:
    • Better support for Turkish language.
    • Wrong toolbar shown after start-up page.
    • Case sensitive auto-complete
    • Problems with the build events.

Download: CBM prg Studio v3.2.0 (1075)

source: ajordison.co.uk

Considerable donation of retro things for my Repair Laboratory

October 28th, 2014 No comments

I must thank my friends which have contributed to the growth of my Repair Laboratory with donations of spare parts.

For this donation i thank: Andrea Pierdomenico, Paolo M.R, Paolo Cognetti.

The items listed below are in poor condition and they are not working.

Donated items:

  • 2 x Atari 800 XL
  • 1 x Amstrad CPC 464
  • 1 x Sinclair ZX Spectrum +2
  • 2 x Sinclair ZX Spectrum 48k
  • 3 x Commodore 6499
  • 1 x Joystick Spectravideo
  • 1 x Joystick Suncom Slik Stik
  • 1 x Joystick Competition Pro deluxe version (PC)
  • 1 x Commodore VIC-20 RF Modulator
  • 1 x Commodore VIC-20
  • 1 x Philips MSX VG-8020
  • 3 x Commodore 64 Power Supply
  • 1 x Commodore Amiga 500 Power Supply
  • 1 x Philips NMS 800 Data Recorder
  • 1 x SVI Spectravideo 904 Data Cassette
  • 1 x SVI Spectravideo 728 MSX Home Computer
  • 1 x Commodore 16
  • 1 x Commodore Floppy Drive 1541
  • 1 x Apple IIc
  • 6 x Sinclair Spectrum Microdrive (only the drive)
  • 1 x Motherboard XT Clone
  • 1 x Motherboard XT IBM 5150
  • 1 x Power Supply Clone XT 5150
  • 1 x MDA Graphics Card ISA
  • 1 x Floppy Controller ISA
  • 1 x Motherboard Amiga 600
  • Some Floppy Disk.
  • Some Tape Cassette.
  • Some cables.
Categories: Donations, News & Rumors, Today

Commodore CBM 4040 Dual Drive Floppy Disk

October 19th, 2014 No comments
Commodore CBM 4040 Dual Drive Floppy Disk

I must thank Davide M. for the donation.

Gallery:

The Commodore 4040 is the replacement for the previous models 2040 (USA) and 3040 (Europe). It’s a dual drive 5¼” floppy disk subsystem for Commodore International computers. It uses a wide case form, and uses the IEEE-488 interface common to Commodore PET/CBM computers.

These drive models use a similar single density, single side floppy data storage format to that used by the Commodore 1541 drive, but with a slightly different data marker indicating which model originally formatted the disk. The low-level disk format was similar enough to allow reading between models, but different enough that one series of drive models could not reliably write to disks formatted with one of the other model series.

Download: CBM 2040-3040-4040-8050 Disk Drive Manual (2188)

Testing the Floppy Drive with the ZoomFloppy interface:

source: wikipedia

C64 Game: Wizball USA +2 / Up’n Down +23D [crazy hack] …

October 16th, 2014 No comments

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

Titles:

  • Robin of the Wood +12DG +PIC +MAP
  • Camelot Warriors +8DG +Pic +Map
  • Wizball USA +2 [ntsc/pal]
  • Sergeant Seymour Robotcop +25D
  • Tazz HS
  • Rasdumje +1D
  • Robin of the Wood +33D
  • City Champ Preview
  • Mario Clone Preview
  • Blopp +1ED
  • Fireblaster Preview
  • Crystal Chamber Preview
  • Ciphoid 9 +6DIH 101%
  • Tales of the Arabian Nights +32D
  • Air Sea Battle
  • UFO Attack +J
  • Looter 100% +1J
  • Air Sea Battle +J
  • Looter +
  • UFO Attack
  • Head-On +2D [onefiled]
  • Invader Alert +ED 101%
  • Savage Island 101% +1S
  • Centipede Junior +1J
  • Up’n Down +23D [crazy hack]

Download: All Games in One Archive (2939)

Commodore TV Game Model 3000H (Pong Clone)

September 21st, 2014 No comments

I thank my friend Giacomo Vernoni for having given me this console that i was looking for a long times. This the link of the Giacomo blog where you can find a complete review of this console with some beautiful photos.

Gallery:

Following Commodore’s acquistion of MOS technologies (famous for producing the later 6502 chip for the PET), the Pong-like TV Game consoles 2000K and 3000H made their appearance.

The 3000H console features two paddles (sliders), one internal and one connected by wire (with 2 additional optional sliders); 9VDC or battery power (6 AA batteries required, yes it can run on batteries!).  It generates its own sound with the built-in speaker and can play 4 games: Tennis, Target (with an optional light gun), Football and Squash.  There is also a gage for difficulty level (handicap), and another for the number of players and other settings.

The cool thing is that the core chip, the MOS 7601 (the last of MOS’s Pong-chip line) read game instructions from a special ROM which appears to be internal to the chip, making it stand out from the other Pong-clones that had the game hard-coded into the system’s logic

However, because graphics and sound are also generated directly by the 7601 and are hardwired into the chip’s logic, it meantthat special variants had to be created if a special display was required for an arbitrary application. Thus, the 7601 in the TV Game series, while being programmable in a crude sense, is hardwired to generate the graphics for the TV Game series’ internal games only and cannot be used into drawing other kinds of shapes.

Games available were the following four:

  • Game mira (playable with an optional optical gun )
  • Tennis
  • Football
  • Squash

source: computinghistory.org.uk

Repair Commodore Amiga 3000 motherboard with Battery leakage

September 20th, 2014 1 comment

Repair Commodore Amiga 3000 Motherboard with Battery leakage

There was once a motherboard of an Amiga 3000/25 devastated of the Battery acid where missings all the socketed components and others are unsoldered and recovered for other things.

The situation was not exactly the best one, in other words … was going into the box of spare parts.

I made the impossible, i have cleaned, scraped and rebuilt many tracks of the pcb corroded by the battery acid and i must say that with lot of patience i have repaired the motherboard giving a new life to this Amiga 3000/25 that he had no many chance to come back to work

The donation of spare parts is always a good thing

September 14th, 2014 3 comments

I must thank my friends which have contributed to the growth of my Repair Laboratory with donations of spare parts.

Donated items:

  • 2 x Sega Dreamcast
  • 1 x Sinclair 128+
  • 2 x Amiga 500 Memory Expansion
  • 1 x Amiga Powersupply
  • 1 x Philips Multi Voltage Power supply
  • 1 x Commodore CBM/PET Power supply (complete and working)
  • 1 x 8088 Motherboard (Clone)
  • 1 x Floppy Drive Controller (ISA Card)
  • 1 x MDA/Parallel Controller (ISA Card)
  • 1 x PC Clone (8088) Power supply
  • 6 x Unknown Adapter/Interface
  • 1 x Atari 7800 Motherboard
  • 1 x Sinclair ZX Spectrum 48k Motherboard
  • 1 x Pong Clone Motherboard
  • 1 x Amstrad CPC 464 Motherboard
  • 1 x Commodore 6499
  • 1 x Power Supply C64/VIC20 (Clone)
Categories: Donations, News & Rumors, Today

C64 Game: Total Eclipse II / Spike’s Peak 101% +7DGM …

September 10th, 2014 No comments

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

Titles:

  • Bozo’s Night Out +7HDG
  • Vallation +6HD
  • Foren Huren +Docs [pal/ntsc]
  • Mag Max +8DGH +Pic
  • Burnin’ Pen ’64
  • Zappy Bird +2
  • Ugh! +5DGM
  • Eelona Preview +2
  • Beyond the Night Run +3H
  • Spike’s Peak 101% +7DGM
  • I Can Remember +D
  • Batman – The Caped Crusader USA + [ntsc/pal]
  • Space Action 2 Preview
  • Game Preview #1
  • Game Preview #2
  • Mad Ninja Preview
  • Slug +30D +Fix
  • King’s Valley Preview
  • Burnin’ Pen ’64 [bugfix]
  • Total Eclipse II -JEWEL-
  • Mission Omega +1D

Download: All Games in One Archive (2959)

Commodore VIC-20 Repair

September 10th, 2014 No comments

Commodore VIC-20 Repair

Defect:

  • Black screen … then black and white image.

Replaced parts:

  • Replaced 1 x 901486 KERNEL ROM (U12)
  • To fix the problem of the image in black and white i have adjusted the “RED” trimmer (C48)

Commodore 16 Power Supply Repair

September 10th, 2014 1 comment

Commodore 16 Power Supply Repair

Defect:

  • Output voltage in short circuit.

Replaced parts:

  • Replaced 1 x 4700uf / 16v Electrolytic capacitor.
  • Replaced 1 x 800mA Bridge rectifier.

MPS 6550 Commodore PET 2001 RAM Adapter by Matthew D’Asaro

September 1st, 2014 No comments

This is another adapter (here the previous one) to replace the MPS 6550 RAM. This adapter replace a single MPS 6550 RAM chip in a Commodore PET 2001 with a standard 2114 RAM chip.

source: dasarodesigns.com

Categories: Hardware, News & Rumors, Today

Commodore CBM 4032 (40 Columns) Repair

August 31st, 2014 No comments

Commodore CBM 4032 (40 Columns) Repair

Defect:

  • “Device not present” error when using the IEEE 488 port (Example Floppy Drive)
  • Sometimes the computer show the prompt of the TIM monitor (Machine Language Monitor program)

Replaced parts:

  • Replaced 1 x IC 6522 VIA (UB15)
  • Replaced 1 x IC 6520 PIA (UB16)