
Hi Everyone,
I've mentioned it in the forum at Atarimax but looks like I neglected to post anything here. I did see there is a thread about Maximum RD's prototype review already up, but I don't want to hijack his thread.
I'm completing work now on the Colecovision Ultimate SD cart, a SD based multi/developers cartridge for our favorite Z80 game console.
The hardware design was finalized and I'm currently building a limited edition of 100 carts which should be available for pre-ordering soon.
Some of the cartridge features are:
Basic Hardware
- 50 MIPS CPU with high speed SD Interface, internal ram and flash memory for cartridge settings.
- FAT32, FAT16, SD and SDHC Support, no practical limits on number of games stored on each card.
- 512KBytes of SRAM (Largest currently published game is only 1/4th of this capacity (128KB Pac-Man Collection))
- 128KBytes of Non-Volatile Block Flash for Diagnostic/Boot ROM/Additional Storage/etc
- Cartridge boot time, from power on to FAT32 display is less than two seconds, with plain english diagnostic messages in case of boot failures.
- Cartridge load time for a 32K ROM image is around one second.
- Full Read/Write access to all 512KB+ of memory for games using the new Hybrid bank switching mode.
- CPU firmware, cartridge boot rom, cartridge hardware logic and menu software are all fully upgradable from the SD card.
Basic Menu Operation
- Cartridge will be able to automatically read and display files present on your FAT32 formatted SD card.
- Menus are created 'on the fly' from the directory structure with optional full or limited long filename sorting.
- No special menu creation or other PC loading software required.
- This means no dependence on Windows drivers or software, you can create and load your card from any operating system that can read/write a FAT32 or FAT16 formatted SD or MMC memory card.
Media Compatibility
- SD, SDHC, and MMC Card Media
- FAT16 and FAT32 Filesystem (with full long filename support)
More Device Specs
- Supports all currently active ColecoVision cartridge formats, including Mega-Cart games and Lord of the Dungeon.
- Supports automatic load/save of game data for Lord of the Dungeon to SD card. No NVRAM/Battery backup required, saves are not tied to any particular cart.
- New 512KB Hybrid Bank Switching mode allowing new games/applications full Read/Write access to 512KB of RAM.
- Programmer API for accessing cartridge services at run time.
- Programmer API will effectively allow creation of games of true unlimited size, as game banks, level data, save game data, etc can all be dynamically loaded from and saved to SD card in microseconds while the game is running.
- Cartridge system software loaded dynamically from SD card at power on.
- One button display of Colecovision game screen shots and manuals from menu for game under cursor.
Availability
Due to personal time constraints I expect the pre-order to be limited to 100 cartridges. These take a very long time to assemble and test and my free time is much more limited than usual these days.
I just ordered the last of the parts required to get these ready for sale, so pricing should be available soon.
If everything goes well I should be able to start pre-ordering in the next couple weeks with delivery within a month.
There is also more information and some videos posted of progress on the project here: http://www.atarimax....wforum.php?f=15
If you have any feature requests/comments/etc please feel free to ask.
Thanks,
Steve














