from 1541 Ultimate Forum:

This a short preview of the 1541U case for the 1541 Ultimate board. These photographs are taken from prototype number 1.

Next week I should get prototype number 2 which should be the final product. This is the revised design based on your needs and requests. Enjoy.

source: Loriano Homepage

From Homepage: There have been some problems with the site (mid february, 2009). Due to some kind of spam robot, the site crashed and was rather badly messed up a few days ago.  All content is still intact though, as far as I understand.

It seems that some of the plugins were abused in some way, so I have been forced to remove the discussion plugin from the site. I think there may also be some problems with access rights, so please let me know if you encounter any kind of trouble.

source: codebase64.org

C64 Pixel Art by Digital Sounds System

source: noname.c64.org

C64 Pixel Art by Leon/Chorus, Resource, Singular

source: noname.c64.org

C64 Pixel Art by Carrion.

source: carrionpixels.wordpress.com

Here’s yet another entry for the 1K games category. This time round it is Container for the Commodore C64.

Game Description:

Collect the containers before your energy runs out.

source: minigamecomp.org.uk

C64 Pixel Art by Gheymaid Inc.

source: noname.c64.org

Pretty nice labyrinth clone.

download prg+source here: noname.c64.org

from: Petscii Forums “PETSCII.COM”

I held off on announcing uIEC/SD availability until I had some stock (impatient folks, you know who you are , but I do now have some stock 90 units).

Since uIEC shares the same firmware (kudos to Ingo Korb, who does not get enough recognition for this fine piece of code) as the recently announced SD2IEC, I’ll spare everyone rehashing the similarities and just note the differences:

Features:

• uIEC/SD is currently the smallest known CBM drive (1.5″ x 1.5″ by 0.3″). Perfect for embedding in your favorite machine, drive, or calculator (shout out to Tone007, who stuffed one in a CBM pocket calculator)
• uIEC/SD shares the same 128kB Atmel AVR 8-bit microcontroller as the rest of the uIEC line. With 51kB used for firmware, there’s plenty of room left for the future.
• uIEC/SD comes complete for use with IEC connector and power supply cassette port connector. VIC/64/C128 users can simply plug the wires in and use. (SX64/+4/C116/C16 users need to source 5V elsewhere, let me know before purchasing if you’d like an alternate connector)
• Although not yet defined for use, uIEC/SD offers an additional switch line and programmatic LED for future use.
• uIEC/SD not only supports SD and SDHC cards, but either SD or SDHC cards can also be used for updating the firmware (new feature, older firmware update software only supports SD cards)

source: petscii forums uIEC gallery

The PLA chip (906114-01) used in the Commodore C64 is a generic 82S100 gate array with custom programming. Its logic functions were dumped and reverse engineered by the community and are available from a variety of sources. They’re reused for this particular PLA replacement in the FPGA Arcade 28 pin DIL CPLD board.

Two approaches exist to build such a PLA replacement:

1. Implementation based on a truth table with 216 entries, each entry consiting of 8 bits and programmed into an EPROM chip.
2. Reverse engineered logic equations programmed into a PLD.

Both approaches result in the same logic functionality when implemented in a CPLD. Since equations are more common for CPLDs, I chose this implementation style for the final design. However, there’s a variant for the truth table available which has been verified in simulation but not in real C64 hardware. Following are descriptions for both of them.

We have run simulations proving that the equations perfectly match the truth table, so both compiled outputs are effectively identical in the C64 implementation discussed here.

source: fpgaarcade.com

Forth, the Language.

Forth is a different language. It’s aged and a little weird.
What’s cool about it? It’s a very low-level and minimal language without any automatic memory management. At the same time, it easily scales to become a very high-level and domain-specific language, much like Lisp. Compared to C64 Basic, Forth is more attractive in almost every way.

It is a lot more fast, memory effective and powerful. Compared to C, specifically cc65, the story is a little different. It’s hard to make a fair comparison. Theoretically Forth code can be very memory efficient, and it’s possible to make Forth code that is leaner than C code. But it is also true that cc65 code is generally much faster than Forth code.

download: noname.c64.org
wikipedia: forth

The software part of the 1541 Ultimate is from now on Open Source! Although the hardware still needs to be documented, people can already check out the source code, edit it and build new applications for the 1541 Ultimate! The source is released under GPL 3.0, which in short means that every addition to the source code will also need to be open sourced and the code or parts thereof may not be sold. The full license agreement can be found in the ‘root’ (trunk) of the SVN archive.

In order to build the software, you need to do the following:

• Install Cygwin, or run under Linux. Make sure you have:
  • GNU make in order to run the makefiles.
  • GCC compiler, in order to build the conversion tools.
• Install CC65 (http://www.cc65.org), and make sure you have the required environment variables and path set.
• Install a SVN client package (either command line in Cygwin) or a graphical client such as Tortoise SVN.
• Check out the repository from http://svn.xp-dev.com/svn/gideonz_1541Ultimate/
• Go to the trunk directory and type ‘make’.

At this point, the archive is read-only. If you are a developer and want to make a significant contribution to the 1541 Ultimate, please contact me and we can discuss being a write-user on the archive. Bug fixes from others can be E-mailed as patches, which I’d happily merge with the archive.

Happy programming!

source: 1541ultimate.net

David Haynes DLH’s Commodore Archive has updated his page.

• Hardware – JiffyDOS Installation Guides.  Missing are 64, 64c and 128D.  Originals provided by  Chris Ryan
  If anyone has these please contact me.  Also a good copy of the User Manual is needed.
  SX-64, C128, 1541, 1541-II, 1571, 1581, BlueChip BCD, Enchancer 2000, FSD-2, MSD SD-1 & SD-2
• Magazines – Added torrent for Family Computing (67 Issues)
• Books – The Official GEOS Programmer’s Reference Guide (BANTAM, 484 pages). This replaces the old scan that did not have OCR.  I included the CMD Addendum at the front (17 pages)

source: DLH Commodore Archive

Playing 1541 Sing Song Serenade Drive Music.

After many months and a lot of work. Onslaught & Wrath Designs bring you the 50th Vandalism News called The Gold Edition. Four disk sides, 12 exclusive SIDs, a bonus disk and two disk covers.

download magazine: noname.c64.org
download disk cover: noname.c64.org
website: onslaught.c64.org