Ok, got the HYDRA sram cards back, built one, worked 100% first try. All the modes seems to work, post inc, dec, latching, etc. Been trying to cause noise problems to see if ever there is a lost bit, none yet. Now, I am going to start running some final high speed tests, and if all works out then start on the documentation and final product stuff and send it to manufacturing for bulk production. While that goes on we will work on some graphics driver demos, but we want to release this asap, so software will not delay release, once the hardware is ready to ship, we will put it for sale.
But, looks good so far, LOTS of LEDs on it [noparse]:)[/noparse] And once again for those not following this, the features are:
- 128K EEPROM on board.
- 512K SRAM.
- 0-64K directly addressable by latching 2 byte address.
- 64-512K addressable by block addressing and pointer incrementing/decrementing in the memory controller.
- Re-Programmable CPLD
Target price $39-49
Cool thing, can be used with anything... just need a 20-pin edge connector 10/10 with .1" spacing and you can plug it in. So you can add it to other propeller or stamp projects as well.
You need 3 (control) + 8· (data) lines to interface.