soar loser (was: a tale of 4 cpus)
Frank Sergeant
frank at canyon-medical.com
Fri Feb 15 16:36:54 UTC 2002
Jecel Assumpcao Jr <jecel at merlintec.com> wrote:
> ... - field programmable gate arrays (FPGAs) have evolved to
> a degree that custom processors are now very competitive at the low
> end. For example: I designed a small terminal running Forth on a $20
> Atmel AVR8 (4 MHz, 128KB Flash, 4KB RAM) processor which was very nice.
> But then I replaced that with an $9 FPGA, a $2 512KB Flash and a $2.50
> 8MB SDRAM and implemented a custom Forth processor at 57 MHz (20 to 30
> times as fast).
How interesting! I fooled around some with the Harris RTX2001 Forth
chip about 12 years ago (and Forth itself on various chips). I'm now
doing the software in Forth for a project where power consumption is
important (battery powered) so I was curious about the power consumption
of your Atmel versus FPGA versions. (We are using an Hitachi H8/532 CPU
currently.) I imagine the FPGA and SDRAM are power hogs?
-- Frank
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