Interest check: An updated MiniITX-MiniMig ( Pics!!! )

[FrenchShark]

Hello,

sorry for this late remark/request but, I am finishing the adaptation on FPGA of the Capcom game "1943 : The battle of midway".
The issue is that it cannot run on the current Minimig because of the slow SRAM (55ns).
The FPGA game runs with a bus clock at 24MHz (40ns cycle).
I know there are some 512x16 TSOPII-44 SRAM @ 10ns from Cypress/ISSI but they are expensive and difficult to find.
The best deal is to put four 512x8 SRAM chip ($3.84 each at Future Electronics)

Regards,

Frederic

[FrenchShark]

Illuwatar wrote:
I did the test You wanted me to do. By hardwire vsync to VCC (5V) of the AD724, I got a stable picture. But instead, all colors went wrong (black background with hardly noticeable contours of the floppy hand) and the pictures are skewed. Restoring vsync to be controlled by the FPGA, I got back the smooth vertical scroll, otherwise a clear and sharp (as sharp it can be at composite) picture with correct colors.

Did you try hardwiring vsync to GND ?
What you are describing looks like hsync (=csync) being reversed because vsync = 1, if vsync is set to 0 the inversion should disappear.

Regards,

Frederic

[FrenchShark]

Illuwatar wrote:
There is a 10-pin header just at the left side of the card socket that replicates all the pins for the card. It is not mounted at the pictures. The idea is to make a small break-out board that you could place anywhere in your chassis. Currently, I don't have any PCB layout for that yet - the MiniMig itself have taken a lot of time to design and test. The same idea have been applied to the LED's and buttons - they are all available at a pin header.

Hello,

Can you make the SD-Card header compatible with the breakout board from sparkfun ?
http://www.sparkfun.com/commerce/product_info.php?products_id=204

Regards,

Frederic