Autopsy:

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from Wikipedia:

The IBM Personal Computer XT, often shortened to the IBM XT, PC XT, or simply XT, was IBM’s successor to the original IBM PC, factory equipped with a hard drive. It was released as IBM Machine Type number 5160 on March 8, 1983, and essentially the same as the original PC, with only incremental improvements. A new 16-bit bus architecture would follow in the AT. The XT was mainly intended as an enhanced machine for business use, though later floppy-only models would effectively replace the original model 5150 PC. A corresponding 3270 PC featuring 3270 terminal emulation was released later in October 1983. XT stands for X-tended Technology.

The XT originally came with 128 kB of RAM, a 360 kB double-sided 5.25 in (133 mm) full-height floppy disk drive, a 10 MB Seagate ST-412 hard drive with Xebec 1210 MFM controller, an Asynchronous Adapter (serial card with 8250 UART) and a 130 watt power supply. The motherboard had eight 8-bit ISA expansion slots, and an Intel 8088 microprocessor running at 4.77 MHz (with a socket for an 8087 math coprocessor); the operating system usually sold with it was PC DOS 2.0 and above. The eight expansion slots were an increase over the five in the IBM PC, although three were taken up by the floppy drive and hard drive adapters, and the Async card. (An IBM PC also typically had a floppy disk controller in one of its five slots; both the PC and XT also usually required a display adapter in another slot.) The basic specification was soon upgraded to have 256 kB of RAM as standard.

Slot 8 on the XT motherboard was wired slightly different than the other slots, making it incompatible with some cards and had additional signal CARD SLCTD (pin B8). This was done for cards designed to allow the XT to be connected to IBM mainframes (3270-PC). The modified slot is found only on the 5160 and 5155 Portable PC; it is not in the 5150, IBM AT, or any clone PCs. During this period, it was commonplace for ISA cards to include a jumper allowing them to work in Slot 8. Video cards initially comprised the MDA and CGA, with EGA and PGC becoming available in 1984.

source: wikipedia

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:

• A USB version which allows to connect the floppy disk drive interface of the computer to a PC via a USB cable.
• A SDCARD version which allows to emulate floppy disks which images are stored in a SDCARD.

Release notes for the HxCFloppyEmulator software v2.0.16.0:

• FAT12 Loader/generator : Files size, disk size & disk free size displayed, lots of sanity checks added.
• TRS80 Writer : Bad free() removed.
• General : Software passed with valgrind : Some memory leaks and possible issues corrected.

Download:

• HxCFloppyEmulator v2.0.16.0 (943)

source: hxc2001.free.fr lotharek.pl

Autopsy:

I have purchased this item at a very low price (15 Euros) because he was curious.

I don’t have found any information on internet about it. The production date should be around 1989/90 in Germany. The processor used is a Motorola 68008, the same also used on Sinclair QL.

It was released a new firmware for the C64SD Infinity + ITS Module by Manosoft which fixes some minor compatibility issues present in the previous release with some C64 Filebrowser.

Download: C64SD Firmware v0.10.3.7 (1351)

source: manosoft.it

This is the official demo party results from BFP (Baroque Floppy People) Top 3 Entries only. See also the BFP homepage for more informations.

C64 Demo:

• 1. Wonderland XII by Censor Design
• 2. Scrollwars by Fairlight, Offence, Prosonix
• 3. 20 Years Is Nothing by Hack n’ Trade

C64 Music:

• 1. Da Cheese Cut by Scarzix
• 2. Alice in Wonderland by Magnar Harestad
• 3. Frozen Yoghurt by Qdor

C64 Graphics:

• 1. The West Is Not Too Wild by Yazoo
• 2. Fearless by Sphinx
• 3. Skål by AcidT*rroreast

Download: BFP (Baroque Floppy People) full Party stuff (1017)

source: noname.c64.org/csdb BFP Homepage

Some new games (Cracked / Trained or Unrealeased) for Commodore 64 have been released from your favorites groups: Metalvotze, Genesis Project, S.E.U.C.K. Trainers United, Really Proud Lamers, Dinasours and Laxity.

Download:

• Sheepoid DX +7HFD [pal/ntsc] (1003)
• Mysterix +1ED [english+onefiled] (979)
• Pimmelsafari (996)
• Return of the Jedi (969)
• Fast Food Preview (965)
• Ultimate Cops +2 (991)
• Scramble 1k +3 (956)
• Berzerk + (992)
• Moondog +1 (1008)
• All Games in One Archive (2609)

source: csdb.dk

This is the official demo party results from the Atari Głuchołazy 2013. See also the Atari Głuchołazy 2013 homepage for more informations.

Graphics Compo:

• 1. Fred by Piesiu
• 2. Glazy2013 by Rocky
• 3. Pszczelak by Rocky
• 4. Wampirek by Rocky
• 5. Ogrodnik by Nosty

Music Compo:

• 1. Chip Spring Tune by LiSU
• 2. Far Away by stRing

Code Compo:

• 1. Wielbłądy 2 by Lamers
• 2. Lashes of flashes by TDC

Download:

• Glucholazy 2013 full Party stuff (1567)

source: atari.org.pl/party13/

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This gallery shows some stages of cleaning the computer Apple ][ Europlus, Apple Disk ][.

I have also made minor repairs which i describe below:

• Replaced the Lamp of the power-on.
• Removing the RIFA filter capacitor (the capacitor was exploded)
• Fixed the center hub of the Apple Disk ][.

Autopsy:

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The gallery of the Apple /// Monitor can be viewed by clicking here

from Wikipedia:

The Apple II series (trademarked with square brackets as “Apple ][") is a set of 8-bit home computers, one of the first highly successful mass-produced microcomputer products, designed primarily by Steve Wozniak, manufactured by Apple Computer (now Apple Inc.) and introduced in 1977 with the original Apple II. In terms of ease of use, features and expandability the Apple II was a major technological advancement over its predecessor, the Apple I, a limited-production bare circuit board computer for electronics hobbyists that pioneered many features that made the Apple II a commercial success. Introduced at the West Coast Computer Faire on April 16, 1977, the Apple II was among the first successful personal computers; it launched the Apple company into a successful business (and allowed several related companies to start). Throughout the years, a number of models were sold, with the most popular model remaining relatively little changed into the 1990s. It was first sold on June 10, 1977. By the end of production in 1993, somewhere between five and six million Apple II series computers (including about 1.25 million Apple IIGS models) had been produced.

The Apple II Plus, introduced in June 1979,included the Applesoft BASIC programming language in ROM. This Microsoft-authored dialect of BASIC, which was previously available as an upgrade, supported floating-point arithmetic, and became the standard BASIC dialect on the Apple II series (though it ran at a noticeably slower speed than Steve Wozniak's Integer BASIC).

Except for improved graphics and disk-booting support in the ROM, and the removal of the 2k 6502 assembler/disassembler to make room for the floating point BASIC, the II+ was otherwise identical to the original II. RAM prices fell during 1980–81 and all II+ machines came from the factory with a full 48k of memory already installed. The language card in Slot 0 added another 16k, but it had to be bank switched since the remaining CPU address space was occupied by the ROMs and I/O area. For this reason, the extra RAM in the language card was bank-switched over the machine’s built-in ROM, allowing code loaded into the additional memory to be used as if it actually were ROM. Users could thus load Integer BASIC into the language card from disk and switch between the Integer and Applesoft dialects of BASIC with DOS 3.3′s INT and FP commands just as if they had the BASIC ROM expansion card. The language card was also required to use the UCSD Pascal and FORTRAN 77 compilers, which were released by Apple at about the same time. These ran under the UCSD p-System operating system, which had its own disk format and emitted code for a “virtual machine” rather than the actual 6502 processor. The UCSD P-system had a curious approach to memory management, which became even more curious on the Apple III.

A TEMPEST-approved version of the Apple II Plus was created in 1980 by the Georgia Tech Research Institute for U.S. Army FORSCOM, and used as a component in the earliest versions of the Microfix system. Fielded in 1982, the Microfix system was the first tactical system using video disk (Laserdisk) map technology providing zoom and scroll over map imagery coupled with a point database of intelligence data such as order of battle, airfields, roadways, and bridges.

After the success of the first Apple II in the United States, Apple expanded its market to include Europe, Australia and the Far East in 1978, with the Apple II Europlus (Europe, Australia) and the Apple II J-Plus (Japan). In these models, Apple made the necessary hardware, software and firmware changes in order to comply to standards outside of the U.S. The power supply was modified to accept the local voltage, and in the European and Australian model the video output signal was changed from color NTSC to monochrome PAL – an extra video card was needed for color PAL graphics, since the simple tricks Wozniak had used to generate a pseudo-NTSC signal with minimal hardware did not carry over to the more complex PAL system. In the Japanese version of the international Apple, the keyboard layout was changed to allow for Katakana writing (full Kanji support was clearly beyond the capabilities of the machine), but in most other countries the international Apple was sold with an unmodified American keyboard; thus the German model still lacked the umlauts, for example. For the most part, the Apple II Europlus and J-Plus were identical to the Apple II Plus. Production of the Europlus ended in 1983.

source: wikipedia

Commodore Free Magazine Issue #70 and #71

Free to download Commodore magazine dedicated to Commodore Computers.

Download:

• Commodore Free Magazine Issue #70 (D64) (1056)
• Commodore Free Magazine Issue #70 (PDF) (1250)
• Commodore Free Magazine Issue #70 (TXT) (984)
• Commodore Free Magazine Issue #71 (D64) (988)
• Commodore Free Magazine Issue #71 (PDF) (1309)
• Commodore Free Magazine Issue #71 (TXT) (1096)

source: commodorefree.com

I have decided to repair my Coleco Vision Secam version (RGB) purchased some years ago in a full working state, today is died. Below a description of the defect and of components being replaced.

Defect: dirty sprite

• 3 x 4116 (RAM)

I have received this computer in excellent cosmetic condition but unfortunately with some dead keys of the keyboard.

The trick of the repair is cleaning the two little strips and the small conductive button (see the photos)

Autopsy:

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from Wikipedia:

MicroBee (Micro Bee) was a series of home computers by Applied Technology, later known as MicroBee Systems.

The original MicroBee computer was designed in Australia by a team including Owen Hill and Matthew Starr. It was based on features available on the DG-Z80 and DG-640 S-100 cards developed by David Griffiths, TCT-PCG S-100 card developed by TCT Micro Design and MW6545 S-100 card developed by Dr John Wilmshurst. It was originally packaged as a two board unit, with the lower “main board” containing the keyboard, Zilog Z80 microprocessor, Synertek 6545 CRT controller, 2 kB of “screen” RAM, 2 kB of character ROM (128 characters) and 2 kB of Programmable Character Graphics (PCG) RAM (128 characters). Each byte in the screen RAM addressed a character in either the character ROM or PCG RAM. A second board, termed the “core board”, contained the memory, and on later models also included a floppy disk controller.

The computer was conceived as a kit, with assembly instructions included in Your Computer magazine, in June 1982. After a successful bid for the New South Wales Department of Education computer tender, the computer was repackaged in a two-tone beige and black case, and sold pre-built. The 16 kB ROM held the MicroWorld BASIC interpreter written by Matthew Starr and DGOS (David Griffiths Operating System) compatible System Monitor. In addition to the 16 kB ROM, there is additional ROM socket for optional programs such as WORDBEE (Word processor) or EDASM (a Z80 Editor/Assembler that was written by Ron Harris).

Original MicroBees ran at a clock speed of 2 MHz, with a video dot clock of 12 MHz, which was sufficient to display 64 × 16 characters (512 × 256 pixels) on a modified television or composite monitor. The original machines were supplied with 16 or 32 kB of static RAM, and stored programs on cassette, using 1200 Baud encoding.

Download: MicroBee PC 85 ROM Eprom Dump (1480)

source: wikipedia

This is the official demo party results from Nordlicht 2013 (Top 3 Entries only). See also the Nordlicht 2013 homepage for more informations.

Mixed:

• Pimmelsafari by Metalvotze (Game)
• Return of the Jedi (Game)
• Hubbard Selector by Peiselulli (Music Collection)

Mixed Graphics:

• Night Walk by Arsenic, Oxyron
• Mind Collapse by Tristar & Red Sector Incorporated
• Never Trust a c64 by Rabenauge

Mixed Music:

• Lauter by dEViLOCk
• N0rdl1cht 2013 by fieserWolf
• Two Reds For One Blues by Mayday!

Mixed Demo:

• Natura Morta by Tristar & Red Sector Incorporated
• Zeropage Gravity by Tristar & Red Sector Incorporated
• Call of the Past by Arsenic

Productions released outside compos:

• D71 Ultimate V0.2 (Tool)
• Demo of the Year 2013 by Phantasy/Hitmen/Laxity/Alpha Flight/Fossil/Oxyron/Chorus/Camelot/Censor Design (Demo)

Download: Nordlicht 2013 full Party stuff (1030)

source: noname.c64.org/csdb nordlicht.demoparty.info

Autopsy:

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from Wikipedia:

The TC 2048 or Timex Computer 2048 is a computer created by “Timex of Portugal, Lda”, a branch of Timex Corporation. It was highly compatible with the Sinclair ZX Spectrum computer, although differences in the ROM prevented 100% compatibility.

Timex Portugal sold the TC 2048 in Portugal and Poland, where it was very successful. Also, a NTSC version was sold in Chile. This computer forms the basis of an improved Spectrum-compatible machine, the Spectrum SE.

Timex Sinclair was a joint venture between the British company Sinclair Research and Timex Corporation in an effort to gain an entry into the rapidly growing early-1980s home computer market in North America. The choice of partnership was natural as Timex was already the main contractor for manufacture of Sinclair’s ZX81 and ZX Spectrum computers at its Scottish plant in Dundee.

It was Timex of Portugal, though, that took on the R&D and the local manufacturing of the models to be exported to the U.S. Although both Timex of Scotland and Timex of Portugal were full subsidiaries of Timex, internal rivalry, whether unintended or purported, meant there were no contacts nor experiences shared between the two plants. Timex of Portugal also sold the Timex Sinclair models in Portugal and Poland under the Timex Computer brand.

Technical specifications:

• CPU: Zilog Z80A @ 3.50 MHz
• ROM: 16 KB
• RAM: 48 KB
• Sound: Beeper (1 channel, 10 octaves and 10+ semitones via internal speaker)
• Display:
  • Improved ULA offering additional screen modes:
  • Text: 32×24 characters (8×8 pixels, rendered in graphics mode)
  • Graphics: 256×192 pixels, 15 colours (two simultaneous colours – “attributes” – per 8×8 pixels, causing attribute clash)
  • Extended Color: 256×192 pixels, 15 colors with colour resolution of 32×192 (two simultaneous colours – “attributes” – per 1×8 pixels)
  • Dual Screen: (two 256×192 pixels screens can be placed in memory)
  • A monochrome 512×192 mode

• I/O:
  • Z80 bus in/out
  • Tape audio in/out for external cassette tape storage
  • RF television out
  • Composite video monitor out
  • Kempston Joystick input

Download: Timex Computer 2048 Schematic (1485)

source: wikipedia