On Wed, 22 Aug 2001, Ruud Baltissen wrote: [quote for the Micron 16-megabyte SDRAM chips] > $6.00 for 25 pieces, no VAT Not bad. On the Xilinx web site, you can find application note 134, which provides an example of controlling a 16-megabit (1 Mb*16) Micron SDRAM chip with a Xilinx Spartan-II family logic chip. I checked the Atmel site. The AT17LV256 (datasheet available from http://www.atmel.com/atmel/products/prod182.htm) is an in-system programmable FPGA configuration EEPROM chip that could be used with the Xilinx chip. It appears that the SRAM-based programmable logics from Atmel cannot be used in mixed 5V and 3.3V operation, but the Xilinx chip could be used. Does anyone (Rainer?) have experience in designs like this? If the total cost of parts is less than $20 or $30, I think that it would be feasible to build a 16 MB REU clone (possibly including some Flash ROM, such as the Am29LV640 that provides 8 megabytes). When all parts are in-system programmable, the first prototypes could omit most of the planned features, and the VHDL code could be written as a joint project. The entire design would be open-source, of course. Marko Message was sent through the cbm-hackers mailing list
Archive generated by hypermail 2.1.1.