A new demo (slideshow) by Algorithm.
Download: CSSHC-VQ Slideshow by Algorithm (1257)
source: csdb.dk
Autopsy:
The ZX Spectrum +2A was Amstrad’s first Spectrum, coming shortly after their purchase of the Spectrum range and “Sinclair” brand in 1986. The machine featured an all-new grey enclosure featuring a spring-loaded keyboard, dual joystick ports, and a built-in cassette recorder dubbed the “Datacorder” (like the Amstrad CPC 464, but was otherwise identical to the ZX Spectrum 128 in looks. Production costs had been reduced and the retail price dropped to £139–£149
The machine was built in Taiwan (making it the first Sinclair product built outside the UK) and Amstrad’s greater emphasis on quality control made it far more reliable than the first Spectrums.
Amstrad also took a very different line in marketing the ZX Spectrum +2A. Unlike Sinclair, Amstrad did not attempt to market the Spectrum as anything other than a games machine and sold it in packages such as the “James Bond 007 Action Pack” (with bundled games and a light gun). This approach was extremely successful, and the ZX Spectrum +2A sold very well.
The gun connects to the BT style serial ports on the 128K versions of the Sinclair ZX Spectrum, and allows you to point the gun at your TV screen – the programs then interpret the position of the gun on the screen when you press the trigger, giving you the feel and action of using a real gun to hit targets.
source: computinghistory.org.uk
Gallery:
Software titles:
Onslaught / Wrath Designs / Vandalism, bring to you the 60th issue of the Vandalism News.
Download: Vandalism News #60 (1205)
source: noname.c64.org/csdb
Memento is a new game for the Commodore Plus/4 (PAL) made by the group Assassins.
The program is written by Skoro, the graphics are from KiCHY and the music was made by Csabo. The game is a memory game and has 20 levels. The difficulty will increase with each level.
Download: Commodore Plus/4 Memento (1391)
source: plus4world.powweb.com
This is the official demo party results from Syntax 2013 (Top 3 Entries only). See also the CSDB Syntax 2013 section for more informations and download.
C64 Demo:
WiLD Demo:
C64 Music:
C64 Graphics:
Download: Syntax 2013 full Party stuff (1227)
source: noname.c64.org/csdb/
Autopsy:
from Wikipedia homepage:
The Intellivision is a video game console released by Mattel in 1979. Development of the console began in 1978, less than a year after the introduction of its main competitor, the Atari 2600. The word intellivision is a portmanteau of “intelligent television”. Over 3 million Intellivision units were sold and a total of 125 games were released for the console.
In 2009, video game website IGN named the Intellivision the No. 14 greatest video game console of all time. It became Mattel’s first video game console, though it was their only console until the release of the HyperScan in 2006.
The Intellivision was developed by Mattel Electronics, a subsidiary of Mattel formed expressly for the development of electronic games. The console was test marketed in Fresno, California, in 1979 with a total of four games available, and was released nationwide in 1980 with a price tag of US$299 and a pack-in game: Las Vegas Poker & Blackjack. Though not the first system to challenge Atari, it was the first to pose a serious threat to Atari’s dominance. A series of advertisements featuring George Plimpton were produced, that demonstrated the superiority of the Intellivision’s graphics and sound to those of the Atari 2600, using side-by-side game comparisons.
Mattel Intellivision SECAM Motherboard:
source: wikipedia
Autopsy:
This Floppy Drive VIC-1541 (brown label with white case) unlike the known model of VIC-1541 uses a drive mechanism of Newtronics/Mitsumi White and not the usual ALPS brown.
The drive mechanism probably was replaced over the time but i have published the photos anyway.
from Wikipedia homepage:
The Commodore 1541 (also known as the CBM 1541 and VIC-1541) is a floppy disk drive (FDD) which was made by Commodore International for the Commodore 64 (C64), Commodore’s most popular home computer. The best-known FDD for the C64, the 1541 was a single-sided 170 kilobyte drive for 5¼” disks. The 1541 followed the previous Commodore 1540 (meant for the VIC-20).
The disk drive used Group Code Recording (GCR) and contained a MOS Technology 6502 microprocessor, doubling as a disk controller and on-board disk operating system processor. The number of sectors per track varied from 17 to 21 (an early implementation of Zone Bit Recording). The drive’s built-in disk operating system was CBM DOS 2.6.
source: wikipedia
This gallery shows some stages of the repair of the Sinclair Spectrum 48k.
Defects found on the Sinclair Spectrum #1:
Components replaced:
Defects found on the Sinclair Spectrum #2:
Components replaced:
Defects found on the Sinclair Spectrum #3:
Calibration:
Defects found on the Sinclair Spectrum #4:
Components replaced:
Defects found on the Sinclair Spectrum #5:
Components replaced:
The bad way used some years ago was cut the pin 8 of the all 4116 ram to isolate the bad one, in this case, i didn’t cut the pins of the ram, but i have cut the track of 12v which is part of all the 4116 ram, doing so, the transistor ZTX650(651) doesn’t explode.
At this point there is a short in one or more RAM between +12 and 0v. I have measured the absorption where i have cut the track and it absorbs too much.
I just have to unsolder the pin 8 of the 4116 ram and trying to isolate it for find which ram is short-circuited.
Defects found on the Sinclair Spectrum #6:
Components replaced:
Sinclair Spectrum Faulty / AutoLoad Video:
This is the official demo party results from ZOO 2013 (Top 3 Entries only). See also the CSDB ZOO 2013 section for more informations and download.
C64 Demo:
C64 Music:
C64 Graphics:
C64 Basic Demo:
C64 Disk Cover:
Mixed Graphics:
Download: ZOO 2013 full Party stuff (1167)
source: noname.c64.org/csdb/
Autopsy:
How you can see from the gallery i had to remove the scotch tape that has been glued on the keys, the scotch tape with the long time has dried and detached, now the keyboard is perfect.
The Peters WS128 Home Computer is a Russian Clone of a Sinclair Spectrum 128 but with the addition of some features.
The Company Peters, then Peters Plus Ltd. is a company of microelectronic and computer founded in the year 1990 in St. Petersburg, known especially for the clone Sprinter.
Download: Spectrumpedia (1453)
Sorry, this entry is only available in Italian.
Gallery:
On the occasion of my birthday i have bought the Weller WS81 solder station that replaces my old station Weller WHS40 who has almost 13 years behind him.
The Weller WHS40 solder station was designed for a hobby use and was no longer suitable for my current use.
Small and Convenient retro-keychain.
This gallery shows some stages of repairing the Commodore PET 2001-8C
Two months have passed since i have received my Commodore PET 2001-8 Chicklet exchanged for a Sharp MZ-80K, was the day 28/08/2013.
The motherboard was in disastrous conditions, it took two months and a lot of patience to repair it.
Defect:
Replaced parts and various repairs:
A large number of short circuits visible and not visible (under the ic sockets)
I want to dwell on the ram, i noticed that the PET 2001-8 Chicklet does not digest very well all ram.
These ram don’t work properly for my PET 2001-8 Chicklet:
I had to buy several stocks of ram in 2114 to find the right ram that work correctly. The ram that work very well are the ELCAP 2114L-3.
I have to thank Andrea Pierdomenico for the ROM test on his PET 2001-8C and Alessandro Polito. for the exchange.
Recent Comments