Cart for Homebrews...

[Mobsie]

its like this?

http://www.batronix.com/versand/epromem ... lator.html

[Mobsie]

i have open my MultiCart for the ColecoVision.

Here i can upload from PC with USB up to 128 games, and on the ColecoVision i have a menue to choise.
The new version use sdcard now, but for me this one is okay.

I have made some pic`s, maybe it help you to got an idea.

Foto 1.JPG

Foto 2.JPG

Foto 3.JPG

[Mobsie]

one more

Foto 4.JPG

[Scouter3d]

Hi Mobsie,

Cool the Pictures do help me!

Can you email me the original Highres - Pictures?

thomas@8bit-homecomputermuseum.at

Greetings TOM:-)

[Mobsie]

Hi,

perfect!
Yes, give me 20 min, i send you then.
Tomorrow i make better pic`s, not with the iphone.
And i can send you the card when you need it.
I think for the CV is the same way only other (6502) menue software.

[Mobsie]

okay, i have send.

[Scouter3d]

Thanks Mobsie!

At the Moment i am deciding between different Options:

Flash or SRAM
USB or SDCard

I am in favour of SDCard / SRAM combination because for the Flash Version i would also Need a PC Software to build and Flash the Images...
But USB over a USB2Serial connector in combination with SRAM might be easyer on the Hardware side, but would Need a "Terminal Programm" on the PC side to Transfer the Images...

For my first tries there will not be a menue to choose from... but simply one Image on the SDCARD and 32K SRAM to hold it... so it wont be a "Multicard" but more like a "developement Card/Tool" without burning Eproms all the time (which would be the simple but tideous alternative )

Greetings TOM:-)

[Mobsie]

yes, this solution will be made all happy.
Is more then we dream about!

[Scouter3d]

Today i bought myself a heap of necessary parts... now i start wireing the first things together...

1.step will be to build the SD-Card circuit i found on the Internet and test if i can read from a SD-Card to the ATMEGA
2.step testing to write/read from ATMEGA to SRAM
3.step Trying to read SRAM from CreatiVision...

For the first tests i will provide the Circuit with an external 5V PSU and add no bufferbatterie for the SRAM and i will insert a Hardware-Switch to select between "Program" and "emulate" Mode.
In later revisions i hope to replace the hardware-switch with a software-Switch and allow for programming while the Cart is inserted in the CV and use the 5V from the CV... but first things first...

TOM:-)

[Mobsie]

Wow!
going on very fast.
You ask me to test the ColeoVision multicard if is possible to access as a normal USB-device.
I don`t found a normal USB cable for that, i think my last "Aufräumaktion" was to heavy.
I will get one cable on Monday, then i test.