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Archive for the ‘Retro Computers and other stuff…’ Category

Sharp MZ-80K Complete Setup

March 25th, 2012 No comments

Sharp MZ-80 P3 (Dot Printer)

March 24th, 2012 2 comments
Sharp MZ-80 P3 (close-up)

Autopsy:

I have removed two polyester capacitors (filter) before they explode.

This is a dot matrix printer produced by Sharp for Personal microcomputer System MZ-80 Series. The Sharp MZ-80 P3 must be connected to the Sharp MZ-80 I/O (Interface Unit) to be utilized. This printer has been built by Epson and later rebranded by Sharp.

Sharp MZ-80 FD (Double Floppy Disk)

March 24th, 2012 No comments
Sharp MZ-80 FD (Double Floppy Disk)

Autopsy:

I have removed two polyester capacitors (filter) before they explode.

Floppy Disk Drive for Personal microcomputer System MZ-80 Series. Each floppy disk can contain 143k of data for a total of 286K. The Floppy Disk Drive must be connected to the Sharp MZ-80 I/O (Interface Unit) to be utilized.

Sharp MZ-80 I/O (Interface Unit)

March 24th, 2012 1 comment
Sharp MZ-80 I/O (Interface Unit)

Autopsy:

I have removed two polyester capacitor (filter) that are exploded after a few seconds.

This is a I/O Extension device to connect bus-line signals being output from MZ-80K to peripheral units such as dot printer, floppy disk, colour display and so on.

Sharp MZ-80K

March 23rd, 2012 No comments
Sharp MZ-80K

Autopsy:

from Wikipedia:

The Sharp MZ is a series of personal computers sold in Japan and Europe (particularly Germany and Great Britain) by Sharp beginning in 1978.

Although commonly believed to stand for “Microcomputer Z80″, the term MZ actually has its roots in the MZ-40K, a home computer kit produced by Sharp in 1978 which was based on Fujitsu’s 4-bit MB8843 processor and provided a simple hexadecimal keypad for input. This was soon followed by the MZ-80K, K2, C, and K2E, all of which were based on 8-bit LH0080A Sharp CPU (compatible to Zilog Z80A) with an alphanumeric keyboard.

The Sharp MZ80K was one of the popular early consumer-level microcomputers, with an architecture based on the Zilog Z80 8-bit microprocessor. It was introduced into Europe in 1979. The machine had 48KB of RAM, 32KB of which was available for user programs (the actual figure was dependent on the memory configuration and the system languages being used).

It could run a variety of high-level languages including BASIC, Pascal and FORTRAN, which had to be loaded into RAM before any programming could be undertaken. It could also be programmed directly in assembly code or machine code. The machine had an inbuilt monochrome display and a cassette tape drive. The display, keyboard and cassette drive lifted on hinges to expose the motherboard and circuitry underneath. Graphics capability was primitive, with only preset shapes and icons being available and no native hi-res capability.

This was not unusual for a late-1970s vintage microcomputer. The main drawback, however, of the MZ-80K was the non-standard keyboard, which was difficult to use.

The MZ-80K sold well in Europe despite its high price (it retailed at over £500 in 1980), and a large range of software was available, including some Japanese arcade games. It was superseded in 1982 by the MZ-80A machine.

source: wikipedia

Discontinued servers: what i have recovered!

March 6th, 2012 No comments

Today i have made a decent recovery of PC Card / Ram / CPU and other things from some servers that were being scrapped.

February 18th, 2012 Comments off

February 18th, 2012 Comments off

February 12th, 2012 3 comments

Tandy Radio Shack TRS-80 Model 4P (Low Serial #005336)

February 12th, 2012 1 comment
Tandy Radio Shack TRS-80 Model 4p

Autopsy:

from Wikipedia:

TRS-80 was Tandy Corporation’s desktop microcomputer model line, sold through Tandy’s Radio Shack stores in the late 1970s and early 1980s. The first units, ordered unseen, were delivered in November 1977, and rolled out to the stores the third week of December. The line won popularity with hobbyists, home users, and small-businesses.

Tandy Corporation’s leading position in what Byte Magazine called the “1977 Trinity” (Apple, Commodore and Tandy) had much to do with Tandy’s retailing the computer through more than 3000 of its Radio Shack (Tandy in Europe) storefronts.

The Model 4 shipped with TRSDOS 6, an enhanced version of LDOS by Logical Systems and a vastly superior operating system to Tandy’s earlier TRSDOS offerings. When the Model 4 booted into TRSDOS 6 the video display switched into 80×24 mode and the entire 64KB address space was mapped as RAM. The Model 4 was also capable of running all Model 3 software when a Model 3 operating system disk was detected and loaded during bootup with a 64×16 video mode and Model 3 ROMs mapped from address zero.
TRS-80 Model 4P.

The Model 4 also had the ability to display 640×240 or 512×192 high-resolution monochrome graphics with an optional board. A “luggable” version known as the Model 4P (1983) was a self-contained unit with a case design similar to that of a portable sewing machine.

Early versions of the Model 4 mainboard were designed to accept a Zilog Z8000 16 bit CPU upgrade board to replace the Z80 8 bit CPU but this option was never released.

source: wikipedia

New donations – C128 / C1571 / CD32 Games / Snes RGB Cable

February 5th, 2012 No comments

Today a friend has donated to me some nice things. Thanks Damiano (Manosoft).

Things that have been donated:

  • Commodore 2 x C2N.
  • Amiga CD32 Games (Rise of the Robots / Brutal Football)
  • Super Nintendo/Snes RGB  Cable with AV Power Switch.
  • Commodore 128 (Only Box)
  • Commodore 1571 (Only Box)
  • A unopened box of 10 Floppy Disk FujiFilm 5″ 1/4
  • Catalog of Jackson 1987-88.

February 3rd, 2012 Comments off

Unboxing C64Anabalt / Blok Copy & F.Narzod C64 Cartridges

January 30th, 2012 No comments
C64Anabalt / Blok Copy & F.Narzod C64 Cartridges

Autopsy:

Today i’m very happy to present three new cartridges for the Commodore 64.

Nowadays, i’m very pleased to see new cartridges for Commodore 64. Many years are gone but this computer doesn’t want to die and honestly i am very happy.

If you like to purchase these fantastic games go here.

source: rgcd.co.uk

Atari 2600 Jr (Long Rainbow)

January 30th, 2012 No comments
Atari 2600 Jr (Long Rainbow)

Autopsy:

This version of Atari 2600 console was missing in my collection.

from Wikipedia:

The Atari 2600 is a video game console released in October 1977 by Atari, Inc. It is credited with popularizing the use of microprocessor-based hardware and cartridges containing game code, instead of having non-microprocessor dedicated hardware with all games built in.

The first game console to use this format was the Fairchild Channel F; however, the Atari 2600 receives credit for making the plug-in concept popular among the game-playing public.

The console was originally sold as the Atari VCS, for Video Computer System. Following the release of the Atari 5200, in 1982, the VCS was renamed “Atari 2600″, after the unit’s Atari part number, CX2600. The 2600 was typically bundled with two joystick controllers, a conjoined pair of paddle controllers, and a cartridge game—initially Combat and later Pac-Man.

source: wikipedia

Commodore motherboards repairs in one hour and half

January 15th, 2012 3 comments

Commodore motherboards repairs in one hour and half I am very happy to have repaired for my friend four PCB Commodore in one and half hour.

The defects are:

  • Motherboard Commodore 64 ASSY 250466 with IEC bus broken. (replaced ic 7406 – U8)
  • Motherboard Commodore 64 ASSY 250407 with a Video Output problem with some programs, like FIBR File Manager. (replaced ic 6526 – U2)
  • Motherboard Commodore 64 ASSY 250425 with strange character at startup. (replaced ic 4264 – U12)
  • Motherboard Commodore Floppy 1541 ASSY 1540050 REV C with IEC bus broken. (replaced ic 7406 – UB1 and ic 7414 – UA1)