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from Wikipedia:

The Commodore 8050 and Commodore 8250 were dual unit 5¼” floppy disk drives for Commodore International computers. They used a wide rectangular steel case form similar to that of the Commodore 4040, and used the IEEE-488  interface common to Commodore PET/CBM computers.

The 8050 was a single sided drive, whereas the 8250 could use both sides of a disk simultaneously. Both used a “quad” density format storing approximately 0.5 megabyte per side. The density of media was similar to later PC high density floppy disks, but the 8050 and 8250 could not use PC high density disks reliably. Since “quad” density disks were rare even at the time, users quickly found that typical double density floppy disks had enough magnetic media density to work in these drives.

These drives were not dual mode, so they could not read or write disks formatted by the more common lower capacity Commodore 1541 or Commodore 4040 models. Some variants of these drives existed. The Commodore 8250LP was the 8250 in a lower profile, tan-colored case. The Commodore SFD-1001 was a single drive version of the 8250 in a Commodore 1541 style case (similarly to the Commodore 2031LP), often used by bulletin board systems for their physical similarity to 1541s and high capacity and speed.

source: wikipedia

Kick Assembler is the combination of an assembler for doing 6510 machine code and a high level script language.

Kick Assembler comes with an exe file so you don’t need to install java. The jar file is still distributed – we will keep supporting all java compatible platforms (Linux/Osx).

source: theweb.dk

CartographPC is a Windows application created to assist in designing tile-based datamaps. This devtool serves as a companion piece to our C64 native Cartograph devtool.

The original purpose of CartographPC was to enable us to take nice screenshots of our datamaps without having to take four or six screenshots of smaller windows and piece them together. CartographPC has since grown into a full editor with the benefit of being able to load datamaps created on the C64 directly into memory and edit, save, and move them back to C64 without much hassle.

It works by creating datamaps using tilesets created on C64 with the old, but popular, ultrafont editor. Datamaps can have dimensions of 1 to 255 tiles horizontally and 1 to 127 tiles vertically. CartographPC allows the user to create a datamap as small as 40×25 tiles (one screen) and up to 255×127 tiles.

Currently CartographPC doesn’t support exported datamaps (RLE compressed or converted) from Cartograph but as noted above, standard datamaps are 100% supported.

This application was created as an internal devtool for Arkanix Labs. We’re using Cartograph and CartographPC extensively with our Crimson Twilight Trilogy (tile-based CRPG) and Damned: Out Of Hell (push scroller shooter/jump and run).

source: arkanixlabs.com c64dev.com

Cartograph is a native Commodore 64 application created for designing tile-based maps/levels.

This versatile tool allows you to create maps and levels for your games, matrices and data for demos and tools and much more.

Changelog:

• New: Support for CartographPC filetypes.
• New: Sample source code to display full screen map.
• New: Save character set as part of project file if a custom one is in use.
• Fixed: Color table was saving 4 extra bytes, these have been trimmed off.

source: arkanixlab.com c64dev.com

Autopsy:

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from Wikipedia:

The Commodore PET (Personal Electronic Transactor) was a home/personal computer produced by Commodore starting in 1977.  It was a top seller in the Canadian, United States, and United Kingdom educational markets, and was Commodore’s first full-featured computer and would form the basis for their entire 8-bit  platform. n the 1970s, Texas Instruments was the main supplier of CPUs for use in calculators. Many companies sold calculator designs based on their chip sets, including Commodore.

However, in 1975 TI increased the price to the point where the chip set alone cost more than what TI sold their entire calculators for, and the industry they had built up was frozen out of the market. Commodore responded by looking for a chip set of their own they could purchase outright, and quickly found MOS Technology, Inc. who were bringing their 6502 microprocessor design to market.

Along with the company came Chuck Peddle’s KIM-1 design, a small computer kit based on the 6502. At Commodore, Peddle convinced Jack Tramiel that calculators were a dead-end. Instead they should focus on making a “real” machine out of the KIM-1, and selling that for much higher profits. Tramiel demanded that Peddle, and Tramiel’s son, Leonard, create a computer in time for the June 1977 Consumer Electronics Show, and gave them six months to do it. The result was the first all-in-one home computer, the PET. The first model was the PET 2001, including either 4 KB (the 2001-4) or 8 KB (2001-8) of 8-bit RAM. It was essentially a single-board computer with discrete logic driving a small built-in monochrome monitor with 40×25 character graphics.

The machine also included a built-in Datassette for data storage located on the front of the case, which left little room for the keyboard. The data transfer rate to cassette was 1500 baud, duplicated for safety, giving an effective rate of 750 baud. The 2001 was announced at the ’77 Winter CES in January 1977 and the first 100 units were shipped in mid October 1977. However they remained back-ordered for months, and to ease deliveries they eventually cancelled the 4 kB version early the next year. Two more machines were released in the PET series.

The CBM 8000  included a new display chip which drove an 80×25 character screen, but this resulted in a number of software incompatibilities with programs designed for the 40 column screen, and it appears to have been unpopular as a result. The machine shipped with 32 kB standard as the 8032, but allowed another 64 kB to be added externally. Later the upgrade was installed from the factory, creating the 8096.

source: wikipedia petlibrary.tripod.com

My homebrew Powersupply adaptor for Amstrad CPC 6128 with a External Floppy Drive 3½.

source: cpcwiki.eu jrp king homepage kjthacker.f2s.com

Some new Games & Utility for Commodore VIC-20.

• AntiISDA Warrior. The game concept for AntiISDA Warrior was first developed on the Oric Atmos. The similarity to the game Space Invaders is not only coincidental, but here only the shots are movable, and not the enemies or the initial place for fire.
• Berzerk MMX. A clone of the classic Stern arcade hit, Berzerk. Written in ca65 assembler.
• CBM FileBrowser. A file browser for sd2iec firmware based drives (uIEC/SD2IEC/MMC2IEC) and standard CBM drives too.

source: Denial (The Commodore VIC-20 forum) hirudov.com

A anonymous person has published a large amount of files on a web page about the history of Amiga.

At the moment there are more than 600 PDF files available for viewing or downloading.

source: amiga-documents

Parados Installation Photo Gallery:

ParaDOS is 16kB ROM that replaces the AmsDOS. Allows to use double-sided floppy disks and some more disk formats.

source: grimware.org

SD2IEC is a hardware mass storage device using an SD/MMC card and interfacing with the IEC bus. It is based on the ATmega644 microcontroller from the Atmel AVR microcontroller family.

The most prominent use of SD2IEC is emulation/replacement of a Commodore-1541 disk drive for a C64. Hardware and the microcontroller’s firmware is available as open source (GPL).

Changelog:

2010-03-07 – release 0.9.1

• Bugfix: Filling unused REL records used wrong offsets.
• Bugfix: Unbreak case-insensitive matching of FAT file names.
• Bugfix: Fix raw directory mode for D64/D71/D81.
• Bugfix: Tell the display about REL files too.
• Add preliminary support for the ATmega1284P.

source: sd2iec.de gitweb forum thread c64-wiki

Foto review of the Serial cable and Transfer program:

ADTPro may be used to transfer Apple diskette/disk images in DOS or ProDOS/SOS format.

The Apple client side happens to run under ProDOS or SOS, but it is perfectly capable of reading or writing Apple DOS (or Pascal, or CP/M, or…) diskettes.

source: adtpro.sourceforge.net

Foto review of 3½ Floppy adapter:

Thanks to B.C for the Floppy adapter.

source: ebay retro-zone.org amstrad hack page

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from Wikipedia:

The Apple IIc, the fourth model in the Apple II series of personal computers, was Apple Computer’s first endeavor to produce a portable computer.

The end result was a luggable 7½ pound notebook-sized version of the Apple II that could easily be transported from place to place. The c in the name stood for compact, referring to the fact it was essentially a complete Apple II computer setup (minus display and power supply) squeezed into a small notebook sized housing.

While sporting a built-in floppy drive and new rear peripheral expansion ports integrated onto the main logic board, it lacked the internal expansion slots and direct motherboard access of earlier Apple IIs, making it a closed system like the Macintosh. However that was the intended direction for this model—a more appliance-like machine, ready to use out of the box, requiring no technical know-how or experience to hook up and therefore attractive to first-time users.

Useful links: Serial Cable Pinout & Apple Disk Transfer ProDOS – Apple 2c FAQ – Apple DOS 3.3 Dump – DOS Serial Transfer

source: wikipedia

from the Readme file:

Introduction: Because I wasn’t satisfied with all the available D64 lister programs in several aspects I decided to make my own one. The D64Lister is of course Freeware.

The D64Lister is featured with the following abilities and properties, which are described more precise later on:

• Windows based (Win9x, WinNT, Win2000, WinXP, WinVista, Windows7)
• Multifile support.
• Extended Recursive OpenDialog with Directory selection.
• D64 Images as parameter.
• Images can be drag&dropped.
• 40 Tracks Support (SpeedDOS, DolphinDOS, PrologicDOS)
• 99% PETSCII -> ASCII conversion.
• 99% Original C64/1541 behaviour.
• ASCII Textfile generation.
• RichTextFormat file generation.
• Appending of new Textfiles to existing ones.
• Upper/Lower -> Upper/Graphics Char switching.
• Emulated C64Screen.
• C64Screen is zoom – and scrollable.
• Comfortable OptionsDialog with *.ini File.
• GEOS File support.
• Auto Upper/Lower Char switching for GEOS Files.
• GEOS File Details.
• GeoWrite Textviewer with styles, fontsizes, formats and photoscraps.
• GEOS Font Shower.
• GeoPaint Viewer.
• PhotoScrap Viewer.
• PhotoAlbum Viewer.
• GeoPaint pictures and PhotoScraps are saveable.
• Fonts zoom – and saveable (as bitmap)
• Zoomable display of GEOS icons.
• Export function for supported GEOS Filetypes
• Show BAM (with diskerrors like StarCommander)
• Show BAM entry -> filename, filename -> BAM entries.
• BlockViewer in hex or char.
• FileViewer with BASIC Command Detokenize, C64 program export and Hex View.

source: hardworks.de

from 1541 Ultimate homepage:

February is already drawing to the end, so some news about the 1541U-II is needed here. The good news is: the boards have been produced, and the first few have been tested and are working! They are currently back at the assembly house for a missing connector, but I am expecting them back early this week.

The not-so-good news is, that the plastic cases have more delay. The Chinese company sometimes makes some promises that they are breaking afterwards. Yesterday I received a message that the new samples will be shipped on the 10th of March, while they had previously promised to send 100 cases upfront on Feb 25. I pressed them to send at least 100 pieces on, or before that date.

The good news about the cases is, that they will be black and not cream! I noticed that a lot of you have a strong preference for black. They will be produced using the PA material, enforced with glass fiber. :-)

source: 1541ultimate.net