Commodore Amiga 500 (ASSY 312510) Repair

Defect:

• Garbage boot Screen (see photo).

Repair:

• Replaced 1 x FAT Agnus 8371

Gallery of the repair:

As you can see this is a control pad of the Ion iCade case. It is designed to fit an iPad and has a built in stand for holding it.

The iCade is designed to work as a Bluetooth keyboard of sorts with an iPad.

It uses a standard arcade control wiring and is very easy to modify it to work with any interface can convert the signal from Analog to USB, like the PCB of a Logitech Dual Action joypad.

Gallery:

A software developer John Brooks released what is clearly a work of pure love: the first update to an operating system for the Apple II computer family since 1993.

ProDOS 2.4, released on the 30th anniversary of the introduction of the Apple II GS, brings the enhanced operating system to even older Apple II systems, including the original Apple ][ and ][+.

Note: ProDOS 2.4 is now updated to ProDOS 2.4.1.

ProDOS 2.4 adds new features for all Apple II computers, including the 1977 Integer ROM Apple II. The last release, version 2.0.3, was released in 1993 by Apple computer, 23 years previously.

Download: ProDOS 2.4.1 by J.B. Brooks (DSK) (933)

source: archive.org

Photo Gallery update of my Retro Collection / Retro Trash.

Many things in the photos are not visible because are in hidden places or deliberately hidden.

I seem to have accumulated a lot of things in these long years and this is a good time to meditate what to do and what not to do, absolutely do not sell anything or donating, but also not continue to accumulate, in fact from a few months i’m moving just on repairs and modding and i must say that i feel much better.

Photo Gallery:

Commodore Amiga 600 – External Floppy Drive as DF0.

This mod is very easy, just follow the schematic attached to this post.

Gallery:

Schematic:

Works that have been made:

• Cleaning the leaked acid (KONTAKT PLCC)
• Sprayed a thin layer of insulating lacquer (DUE-CI V-66)

Gallery:

Fortunately a year ago i have also updated the CPLD code (Xilinx) of the Ultimate 1MB to version v2, needed for this update!

Gallery:

source: atariage.com

A nice donation from a friend. Texas Instruments Extensa 460 a laptop of the 90s

Gallery:

2 x Texas Instruments TI-99/4 Power Supply Fixed

• Removed the RIFA Filter Capacitor, one exploded.

 Gallery:

Texas Instruments TI-99/4 Fixed

Defect:

• Garbage screen on startup immediatly or after a couple of minutes.

Fix:

• This defect is very similar to the one of the Coleco Vision console.

The problem are the pins oxidized of the power switch, i have sprayed R-11 and the problem it’s disappeared completely.

I left turned on the computer for more than 2 hours and i have made a 50 x power cycle (ON/OFF) and the problem is no longer appeared.

Note:

I thought there had to be a VDP RAM problem with a diagnosis made remotely without having the TI-99/4 in the laboratory.

To avoid using the lame RF modulator i have used a standard Commodore 64 composite cable that works very well with a NTSC composite video output.

Gallery:

Commodore 64G repaired (1 of 2)

Defect:

• Black screen

Repair:

• Replaced 1 x MOS 7707 (7406) U8

Note:

• The motherboard has been repaired several times, the technician probably in a previous life was a butcher.

Commodore 64 repaired (2 of 2)

Defect:

• Garbage screen but runs programs perfectly.

Repair:

• Replaced 1 x MOS 906114 (PLA) U17

Ikari has released a new firmware for the SD2Snes Flash Cartridge (Super Nintendo/Famicom). The upgrade instructions can be found here.

Changelog:

• major overhaul of the in-game hook code, with more help from the FPGA, to significantly reduce CPU footprint. This improves hook compatibility with a variety of games.
• in-game hook: avoid disruption of manual controller reads (fixes controls in Super Star Wars games)
• new option: “Hide file extensions” (effective after next directory change)
• do not silently fail to load saved games when the sd2snes/saves folder does not exist (create the folder instead)
• do not silently fail to load/save cheat files when the sd2snes/cheats folder does not exist (create the folder instead)
• Cx4 core now runs at exactly 20Mhz
• fixes:
  • MSU1: avoid missed control register status changes on rapid rewrites (fixes FF3 Dancing Mad, Zelda FMV missing audio)
  • fix auto region patch timing (hopefully)
  • fix DSP1 header detection (fixes Ballz 3D JPN)
  • add reset hook to boot games on start of frame only (fixes Boogerman PAL)
  • clear entire SPC700 RAM (do not spare IPL area) – fixes echo artifacts in many games
• minor cosmetic changes:
  • resize SPC player loading window
  • prevent flickering letters on System Information screen

Download:

• SD2Snes Firmware v0.1.7c (933)
• SD2Snes Firmware v0.1.7c (Sources) (915)
• SD2Snes Firmware v0.1.7c (Changelog) (1558)

source: sd2snes.de

SNDH archive v4.6 released - 345 new/updated SNDH files (437 subtunes) – (total 9893 tunes)

Ever since the birth of the Atari ST, different chip music formats have had different ways to use them. If you are coding a chip music player for the Atari ST you would have to use dozens and dozens of special ways to replay music.

But in the mid 90′s, BDC of Aura crew became tired of this inelegant system and decided to fix the issue once and for all. He then created the ‘SNDH’ file format. SNDH is actually the original songfile and replaycode with a header bolted on top of the music and replayer. The header has a unified calling interface no matter what type of chip music is hidden beneath it, and it has extended datas about the music.

Download: SNDH Atari ST YM2149 Archive v4.6 (1258)

source: sndh.atari.org

The MixSID is a stereo SID board for the C64 that can be used with any combination of SID models on a wide range of C64 mainboards.

Features include an integrated stereo channel mixer, pragmatic stereo addressing scheme, flexible handling of io areas, onboard audio input, output and digiboost circuits, dedicated stereo output, full paddle compatibility and versatile digital control.

source: henning-bekel.de

The 13th X party will be held from October 28th until October 30rd 2016. The party will be at the location: De Hoof 18, Someren – the Netherlands. Competitions: C64 Demo, C64 Music and C64 Graphics.

source: x-2016 homepage