I'm playing with some home brewed hardware to upload data into
my linux box. With EPP I'm getting about .5 MBytes/sec. I see
claims that 2M should be the upper limit. Is there a specific
mode that runs this fast (EPP/ECP/???). I can make my hardware
do whatever protocol and timing makes things fastest.
In a related speed issue, I'd like to use the DMA channel. However,
I've found a note in the parport bug list (Suse, 2.4.10-4.GB):
o parport_pc_ecp_read_block_pio() is broken. parport will revert to the
software-driven mode in ieee1284_ops.c
Is this telling me that DMA reads under ECP are broken? As I read
various parallel port documents I'm lead to believe that only ECP
Any thoughts would be appreciated. Thanks.
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This archive was generated by hypermail 2b29 : Mon Mar 10 2003 - 19:58:20 EST