16 Jan
2010
16 Jan
'10
3:21 p.m.
On Friday (01/15/2010 at 02:40PM -0800), Chuck Guzis wrote:
On 15 Jan 2010 at 13:43, dwight elvey wrote:
I'd love to see one of the FPGA or CPLD wizards out there whip up a
little "shim" that would sit between a 32Kx8 or 64Kx8 SRAM and provide
a sideband SPI interface to read/write that SRAM while still allowing
parallel access from the target system. It wouldn't have to be true dual
port and in fact this shim might also export a RESET signal that puts the
target system into reset when you started diddling things on the SPI side.
But with such a gadget, you could retrofit old systems with EPROM into
the new age of in-circuit programming.
Chris
--
Chris Elmquist
The one thing I wonder about is that the company
is still selling this
unit as an ISA board interface. I'm surprised they haven't come up to
PCI or USB. I'm sure there is a larger market for an inexpensive USB
unit.
In today's JTAG/SPI world, how large a market would that be, Dwight?