Autopsy:
Finally i have replaced my old and inaccurate Capacitor tester with a better one. My lab is beginning to have a semblance semi professional ;-D
Download: Peak Atlas ESR+ 70 User Guide (1366)
Video Review:
Mentor Colour 6 (Pong clone) has been Repaired
Defects:
The problem of the power supply has been fixed by replacing the transitor CS 9013 that is used in a very bizarre way to lower the voltage from 9v to 6.85v. The problem of the audio was always caused by a transistor CS 9013 brutally in short circuit. In this case, the transistor is used like a amplifier.
The transistor CS 9013 can be replaced with a BC 337 that it’s equivalent.
I thank a friend for the donation.
Donated item:
The HxC Floppy Drive Emulator is a software and hardware system created by jfdn aka Jeff.
The aim of this project is to replace the floppy disk drive by an electronic device emulating the floppy disk drive (list of supported Computer/Hardware).
There are two differents emulators:
Changelog SD HxCFloppyEmulator v1.8.2.40 (fat) & v2.1.2.40 (slim):
Download:
source: hxc2001.free.fr
This gallery shows some stages of the cleaning and repairing the Commodore CBM 610.
Defects found on the Commodore CBM 610:
The black screen of death was fixed by replacing the CPU MOS 6509A and the problem of garbage characters on the screen was fixed by replacing the ROM characters with a EPROM 2532 suitably programmed.
The yellowed keyboard was replaced with a new one in good condition of the Commodore CBM 710. I like Commodore. What will be the difference of a CBM 710 and a CBM 610 keyboard? nothing, are the same! no! on the keyboard of the CBM 710 has two wires reversed! (brown/red) ;-D
The filter capacitor exploded has been removed.
This gallery shows some stages of the repairing of the two Floppy Drives Commodore SFD-1001.
Defects found on the two Floppy Drives:
The difficulty was rebuild the tracks of the pcb and remove the most of the leaked acid of the capacitors. Unfortunately on the aesthetic level this type of repair are not perfect, but i’m glad that now work.
To test the correct operation of the Floppy Drives i have used a Commodore CBM (PET) 2001, and a Commodore CBM 610.
Hoxs64 written by David Horrocks is a Commodore 64 emulator for Microsoft Windows 2K/XP/Vista/Seven (DirectX 9+)
The emulator substantially reproduces this legacy machine in minute detail.
Changelog:
Download:
source: hoxs64.net
Hoxs64 written by David Horrocks is a Commodore 64 emulator for Microsoft Windows 2K/XP/Vista/Seven (DirectX 9+)
The emulator substantially reproduces this legacy machine in minute detail.
Changelog:
Download:
source: hoxs64.net
Attitude is a disk magazine for the Commodore 64 computer by Triad. We hope you enjoy this issue as much as you did the previous ones!
Download: Attitude Diskmagazine #14 (1158)
source: noname.c64.org
Autopsy:
I have received this computer to be repaired for a friend with a classic startup fault; the Black screen of Death.
After careful analysis of the problem and thanks to Alessandro Polito for the test, the failed component was the CPU 6509.
from Wikipedia:
The Commodore CBM-II series was a short-lived range of 8-bit personal computers from Commodore Business Machines (CBM), released in 1982 and intended as a follow-on to the Commodore PET series.
The CBM-II had two incarnations, the P series (P = personal, or, home use) and the B series (B = business use). The B series was available with a built-in monochrome monitor (hi-profile) with detached keyboard, and also as a single unit with built-in keyboard but no monitor (lo-profile). These machines were known as the “Porsche PETs” for their unique styling.
The P series used the VIC-II 40-column color video chip like the C64. It also included two standard Atari-style joystick ports. The 6509 CPU ran at 1 MHz in the P series due to the use of the VIC-II chip.
The B series used a 6545 CRTC video chip to give an 80-column “green screen” monochrome output more suitable for word processing and other business use than the VIC-II’s 40-column display. Most models have the Motorola 68B45 installed which is a pin compatible variant rather than the MOS 6545A1 2 MHz part. On the B series the 6509 CPU ran at 2 MHz.
Features common to both the P and B series included an MOS Technology 6509 CPU, an enhanced version of the venerable 6502, that was capable of addressing up to 1 megabyte of RAM via bank switching (however, no CBM-II model came with more than 256 kilobytes of RAM, 1/4 megabyte). The sound chip was the 6581 SID, the same one that was used in the popular Commodore 64 (C64) but with some limitations as it was over-clocked to 2 MHz. Additionally, the CBM-II had an industry-standard RS-232 serial interface and an IEEE-488 parallel bus (for use by disk drives and printers) just like the PET/CBM series. The CBM-II’s built-in operating system used an enhanced version of CBM BASIC version 4.0.
An optional Intel 8088-based coprocessor board allowed the CBM-II series to run CP/M-86 1.1 and MS-DOS 1.25; however, the computers were not IBM PC compatible and very little, if any, software taking advantage of this capability ever appeared. The coprocessor board only ran on hi-profile machines due to power supply and mechanical spacing requirements.
The production naming within the United States and Canada was the B128/B256 and CBM128-80/CBM 256-80 while in Europe they were known as the 600 and 700 series respectively (no “B” in front of the model number). The P machine was known worldwide as the 500 series. There are prototype models though such as the B500 (earlier B128 design) and B700 (earlier CBM 128-80/CBM 256-80 design) known to exist.
Due to the popularity of the C64, the P series was cancelled in the United States before it could be officially released; however, a few dealers who received preproduction units sold them. As these computers had not received approval from the Federal Communications Commission, this caused legal problems for Commodore. The units were recalled and destroyed, but a very small number exist today, in private collections. At least one model, the P500, was commercially released in Europe but only sold in small numbers.
source: wikipedia
FAIL is a viewer of pictures in native formats of Atari 8-bit, Atari ST, Atari Falcon and Atari Portfolio computers.
Currently the project includes:
Changelog:
This is the last release of FAIL. But don’t worry! We are just renaming our project to Retro Computer Image Library (RECOIL), because we are going to support formats from 8-bit and 16-bit machines other than Atari. Stay tuned!
Download: FAIL (First Atari Image Library) v2.0.2 (1631)
source: fail.sourceforge.net
Some new games or tools (Cracked / Trained or Unrealeased) for Commodore 64 have been released from your favorites groups.
Titles:
Download: All Games in One Archive (2690)
source: csdb.dk
Arc64 is a small tool to deal with D64, T64, LNX and ZipCode archives. It can be used to edit D64 images, run D64 images in the WinVice emulator, run
PRG files via CodeNet, convert T64, LNX, PRG, ZipCode and other formats to D64.
A key feature is the drag & drop support. If you drop a D64 image, it will be opened instead of the currently opened D64 image. If you drop any kind of other file, Arc64 will try to add it to the D64 image. Formats like T64, LNX and P00 will automatically extracted into the D64 image as PRGs.
Any changes to a D64 won’t be saved automatically, you either have to drag the header of the directory into an explorer window, or you have to use the
Save-option from the menus.
Download: Arc64 v2.5 by Graham of Arsenic,Oxyron (925)
source: csdb.dk
These two computers had the classic fault: Black screen of Death.
The first one was repaired by replacing a ram chip (4264) partially interrupted, the other one had One of the two chip PLA dead.
I have to thank my friend Andrea for providing me a motherboard of a 8296 for spare parts, where i have recovered the PLA which i needed.
The HxC Floppy Drive Emulator is a software and hardware system created by jfdn aka Jeff.
The aim of this project is to replace the floppy disk drive by an electronic device emulating the floppy disk drive (list of supported Computer/Hardware).
There are two differents emulators:
Changelog SD HxCFloppyEmulator v1.8.2.36 (fat) & v2.1.2.36 (slim):
Download:
source: hxc2001.free.fr
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