8 Aug
2014
8 Aug
'14
12:11 p.m.
On Aug 8, 2014, at 8:27 AM, Dennis Boone <drb at msu.edu> wrote:
No chance whatever of DMA, the DL11 doesn't support it. However, single-task PIO mode
would only have to shuffle bytes at 11,000 per second, probably doable.
At 9600b (max
standard rate of a DL11-W) it is not fast. However, a
DL11-W can be modded to support 115.2Kb fairly easily (new UART, remove
one chip in baud divider and replace with a wire, and a new crystal
oscillator). I have done this for my 11/34 and I can now boot XXDP in
about 15 seconds (vs 3 min at 9600b).
Don,
I'm curious about the details here. Can the /34 actually keep up doing
PIO at this rate? Or are you using DMA somehow?