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Subject: Re: PSIM-1

From: "cormallen" <motm@...>
Date: 2005-02-03

> But ∗also∗ suppose deep in the MOTM R&D labs, a super PSIM is
> brewing....heh
> heh.....ARM7...heh...heh...250,000 gate Xilinx array with USB
> controller...heh...heh....18bit ADC/DACs....heh...heh.......

Yeah! Way to go Paul!

But why an ARM7 rather than an ARM10 or 11? I would have thought if
you're going to be doing DSP, then floating point is kind of nice to have!

(Not that I care, really - the ARM is hands down the nicest machine
I've ever written assembler for. And fixed-point DSP is fast as f∗∗k
'cos it gives you those free barrel-shifts to bring fixed-point
numbers back into scale after a multiply).

So what's the FPGA for? Just for handling USB?

Either way, a couple of inputs, a couple of outputs, four knobs and a
2x16 LCD screen and I'll buy at least two of these!

Harry