Chinook Technology RAM 4000 for Apple IIgs

June 17th, 2014 No comments
Chinook Technology RAM 4000 for Apple IIgs

Gallery:

Apple IIgs Memory Expansion Card. This card has 4 memory banks with a total capacity up to 4Mb (only two banks is presently populated for a total of 2Mb).

The ram that are used for this expansion memory are DRAM HY51C1000LS-10/KM41C1000AP-10.

Commodore Amiga 500 full replacement Power Supply

June 15th, 2014 11 comments
Commodore Amiga 500 replacement Power Supply

Gallery:

This is a full replacement of the power supply of the Amiga 500 with a similar one of the last generation. This type of switching power supply fits perfectly inside the case of the original psu.

The repair will not be made because this psu is very common at very low prices, i don’t waste even a second to find the multiple faults, i prefer devote to other things less common.

Commodore Floppy Drive 1541 Repair

June 13th, 2014 No comments

Commodore Floppy Drive 1541 Motherboard #1

Defect:

  • IEC bus unresponsive.

Replaced parts:

  • Replaced 1 x VIA 6522 (UC3)

Commodore Floppy Drive 1541 Motherboard #2

Defect:

  • IEC bus unresponsive.

Replaced parts:

  • Replaced 1 x VIA 6522 (UC3)
  • Replaced 1 x 7414 (UA1)
  • Replaced 1 x 901229 ROM (UB4)

Removed parts:

  • SpeedDos adapter with the flat cable (user port bus) cutted.
  • SpeedDos ROM Adapter.

Sinclair QL Repair

June 12th, 2014 3 comments

Sinclair QL #1 Repair

Defect:

  • White Screen (RAM problem)

Replaced parts:

  • Replaced 3 x 4264 RAM

Note:

I took the opportunity to install the Minerva Rom v1.98 to identify the faulty ram. Thanks to the Minerva ROM i have identified 2 of 3 Ram failed.

  • Ram Location $1F340 (IC9)
  • Ram Location $3D040 (IC10)
  • Ram Location $30910 (IC16)

Sinclair QL #2 Repair

Defect:

  • White Screen / Black Screen / Garbage Screen / Annoying Background Sound

Replaced parts:

  • Voltage regulator (7805) fault. In input we have 9v and in output 9v instead of 5v.

Note:

Incredibly nothing is exploded ;-D

Commodore Amiga 500+ (plus) & Amiga 600 Repair

June 12th, 2014 No comments

Commodore Amiga 500+ #1

Defect:

  • Battery Leaks.

Solution:

  • Battery Removed.
  • Cleaned the PCB with PCC Kontakt.

Commodore Amiga 500+ #2

Defect:

  • Battery Leaks.

Solution:

  • Battery Removed.
  • Cleaned the PCB with PCC Kontakt.

Commodore Amiga 600

Defect:

  • Where are the capacitors and the tracks ?

Solution:

  • Cleaned the PCB with PCC Kontakt.
  • Alternative way to install the capacitors ;-D

AspeQt v1.0.0 Preview-6 (Atari serial peripheral emulator for Qt)

June 12th, 2014 No comments

AspeQt is a cross-platform, free and open source Atari 8-bit serial peripheral emulator. The name is an acronym for Atari serial peripheral emulator for Qt, Qt being the cross-platform application development framework used by AspeQt.

AspeQt emulates various Atari 8-bit peripherals like disk drives and printers via an SIO-2-PC cable. If you are familiar with software like Sio2Pc, APE, Atari810, AtariSIO etc., you probably won’t have any problems getting used to AspeQt.

Even though AspeQt is not fully mature yet, it is easy to use and, despite its shortcomings, has many features that you may find useful, the highlights being:

  • Cross-platform GUI with drag and drop support.
  • 15 emulated disk drives with support for 512 bytes per sector disk images.
  • High speed operation up to 6 times faster than the normal speed (With compatible OS / DOS)
  • Ability to use PC folders as emulated disks.
  • Disk image explorer for viewing and modifying disk image contents.
  • Ability to run Atari executables directly without using disc images and Doses.
  • Printer emulation with preview and ATASCII support.
  • Cassette image playback with custom baud rate.
  • Ability to save and restore AspeQt sessions with its UI settings..=
  • Normal and mini UI modes.

Version 1.0.0 Preview-6 (May 23, 2014) (Ray Ataergin):

  • Windows registry entries for AspeQt are now stored under “atari8warez.com” registry tree, the program will automatically migrate settings on the next run. Existing AspeQt session files storing session settings are not affected by this change
  • Code needed to compile AspeQt under Mac OS X is added (David Voswinkel – optixx) (see compile.rtf file included with the source archive)
  • Folder images are now emulated in DOS 2.5 disk format rather than DOS 2.0 This gives more unique sector numbers to work with before they are re-used in a circular fashion.
  • Fixed the “Not a binary file” error loading certain executable files.
  • Text conversion is now OS platform aware (Win, Linux, OS X)
  • Explorer Window Stay-on-top feature is now user selectable and persistent across sessions.

Download:

source: aspeqt.sourceforge.net

Flashback 2014: C64 – Official demo party results

June 9th, 2014 No comments

This is the official demo party results from Flashback 2014 (Top 3 Entries only). See also the CSDB Flashback 2014 section for more informations and download.

C64 Demo:

  • Eclectic by Onslaught
  • Rog by Funkentstört
  • Flashback by Software of Sweden

C64 Music:

  • Klotokok by iLKke
  • eXTRATERRESTRic sYMPHo by dEViLOCk
  • Cloudy Days by Gaetano Chiummo

C64 Graphics:

  • Nature by JS
  • Abstract Mutualism by Slayer Grafix
  • The Procurement of the Crimson Skull by iLKke

Download: Flashback 2014 full Party stuff (422)

source: csdb.dk defame.com.au/home

Unboxing & Testing R&D Automation CFFA3000 v1.0 Rev C

June 8th, 2014 No comments

R&D Automation CFFA3000 v1.0 Rev C Apple IIgs through the GBS 8200 v4

First of all, I must thank my dear friend Andrea for helping me financially to purchase this interface (one of the last pieces of the third batch).

Unboxing R&D Automation CFFA3000:

This is a CompactFlash / USB flash drive interface for Apple II family of computers.

Specifications:

  • Support 1 to 13 partitions under ProDOS and GS/OS, and 2 virtual floppy drives
  • Virtual Floppy image support allows the use of almost any non-copy-protected floppy disk image, including .dsk, .2mg, and .nib files. Note: .nib files of protected floppies will not work with the CFFA3000
  • Allows storage of thousands of floppy and smartport disk images
  • User configurable partition count
  • Boot from either device and any partition
  • Allow booting from Dos3.3, Pascal, CPM, Contiki, ProDOS or GS/OS directly from the Interface card (for a floppy-less system)
  • Configurable as a CFFA smart port controller (i.e. a mass storage device) or as a floppy controller, or both. When configured as both, requires 2 slots in your Apple II, one for the physical card, and one for the virtual floppy controller.
  • Hardware supports DMA, although v1.0 software does not currently support DMA. Future support is planned, but not guaranteed.

Apple IIgs through the GBS 8200 v4:

Apple IIgs through the GBS 8200 v4 (display scalar board) to a VGA Monitor.

The cable that i have made takes from the Video Connector of the Apple IIgs the 12v voltage for the GBS 8200.

Schematics:

Video Demostration of CFFA3000 through the GBS 8200:

source: CFFA3000 Homepage

Z88 Cambridge Computer

June 5th, 2014 No comments
Z88 Cambridge Computer (close-up)

I thank my dear friend that gave me the Z88 Cambridge Computer.

Autopsy:

The Cambridge Computer Z88 is an A4-size, lightweight, portable Z80-based computer with a built-in combined word processing/spreadsheet/database application called PipeDream, along with several other applications and utilities, such as a Z80-version of the BBC BASIC programming language.

The Z88 evolved from Sir Clive Sinclair’s Pandora portable computer project which had been under development at Sinclair Research during the mid-1980s. The machine was launched at the Which Computer? Show on 17 February 1987.

The Z88 is a portable computer weighing 0.9 kg, based on a low-power CMOS version of the popular Zilog Z80 microprocessor. It comes with 32 KiB of internal pseudo-static RAM and 128 KiB of ROM containing the operating system (called OZ). The memory can be expanded up to 3.5 MiB of RAM, the contents of which are preserved across sessions. An integrated capacitor prevents the Z88 from losing its data for the limited amount of time it takes to change the batteries.

The machine uses a membrane keyboard, which is almost silent in use; an optional electronic “click” can be turned on to indicate keystrokes. The Z88 is powered by four AA batteries, giving up to 20 hours of use. It has three memory card slots, which accommodate proprietary RAM, ROM or EPROM cards, the third slot being equipped with a built-in EPROM programmer. Card capacities range from 32 KiB to 1 MiB.

The Z88 has a built-in eight-line, “super-twisted” LCD display, which has greater contrast than conventional twisted nematic LCDs.

source: wikipedia

Amiga 500 Keyboard: Keep the useful things from the useless things

June 3rd, 2014 1 comment
Commodore Amiga 500 Keyboard: Keep the useful things from the useless things.

Commodore A500 Keyboard: Keep the useful things from the useless things.

Commodore Amiga 500 Keyboards Join & Fix

June 3rd, 2014 No comments
Commodore Amiga 500 Keyboards Join & Fix

Commodore Amiga 500 Keyboards Join & Fix.

Unfortunately from five keyboards i have made only one in a good shape and full working.

Commodore Amiga 500/600 PSU Repair

June 2nd, 2014 No comments

Commodore Amiga 500/600 PSU Repair

Amiga 500/600 (PSU) PowerSupply #1

Defect:

  • Short-circuit and the fuse blows.

Replace parts:

Amiga 500/600 (PSU) PowerSupply #2

Defect:

  • Short-circuit and the fuse blows.

Replace parts:

Amiga 500/600 (PSU) PowerSupply #3

Defect:

  • Short-circuit and the fuse blows.
  • The PCB is half broken.
  • Some components have suffered of too much heat.
  • The locking pins of the cover are broken.
  • Dirty and Yellowed.

I don’t made the repair. I recovered what might come in handy.

Gotek (Cortex) USB Floppy Disk Drive Emulator

June 1st, 2014 8 comments
Gotek (Cortex) USB Floppy Disk Drive Emulator

Gallery:

The Gotek is a USB Floppy Drive emulator very cheap, you can buy it from eBay at €24.00 €20.00 including the shipping cost.

Let’s start by saying that this Floppy Disk Emulator with the original firmware is totally useless for our purpose, like to connect it to an Amiga and in the near future to a Atari ST or Amstrad CPC. The new firmware written by Herve Messinger replaces the original firmware, to do this you need a simple converter from USB to TTL Serial Interface to program the STM32 ARM Cortex MCU.

I would add this thing; this Floppy Drive Emulator is not absolutely comparable to the HXC Floppy Emulator of Jean-François DEL NERO (Jeff) where in addition to supporting dozens of Floppy Formats/Hardware and the Firmware is in development from several years but it’s a nice and inexpensive alternative.

For more information, firmware and programming tool you need to go here the official blog of Herve Messinger.

Video:

source: cortexamigafloppydrive.wordpress.com

C64 Game: Commando Arcade / Maze of the Mummy Preview +6 …

June 1st, 2014 No comments

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

Titles:

  • Battle for Normandy 101% +D
  • Bubble Escape 2K +1D
  • Harrier Attack HS &D
  • Maze Dash +3
  • Blob Preview V3 +1
  • Maze Dash +4MH
  • Magic Duel [Doreco Party Edition]
  • Bellringer III V1.5 +4HFD [pal/ntsc]
  • Scuba Dive HS &D
  • Gnom [norwegian]
  • Amazon 100% +5EF [pal/ntsc]
  • Commando Arcade
  • Wild West Seymour +2DPG +PIC +SOL +MAP
  • Steinberg Pro-16 Plus, Version 2.4
  • Star Lifter HS
  • Denga +2
  • Maze of the Mummy Preview +6
  • Faster Than Light Preview +2
  • Labyrinth (Commodore Disc) +
  • Fuse &MHD

Download: All Games in One Archive (415)

source: csdb.dk

Commodore SX-64 Keyboard Fixed

May 29th, 2014 No comments
Commodore SX64 Keyboard Fixed

Gallery:

Commodore SX64 Keyboard Fixed.

Defect:

  • Some keys works and some not.

Work done:

  • Cleaning with a “Contact Cleaner” to remove the oxidation of gold contacts under the membrane.
  • Cleaning all keys.
  • Cleaning the keyboard case (inside/outside).