On Sat, Nov 24, 2001 at 07:48:47PM -0500, Tom Perkins wrote:
> Per Tim's suggestion I've been working on code to provide PPF and ECP
> PIO support with no reliance on interrupts.
> 1.) The setting of the phase to FWD_DATA and FWD_DATA_IDLE would seem
Not sure. Hardly anything needs to look at the phase; take a look to
see if any code cares what it is (I don't recall).
> 2.) Changing the mode to ECR_TST looks illegal -- Violates the rule that
> ECR_PS2 must be visited first? This code is the same for the
> ecp_write_block code. In the MS version of 1284 spec I thought a
> control single STROBE was used to stop transfer? Is this correct and
> what should be used for compat_write_block?
It is a violation, and it's wrong. You are right that it should be
changed to a STROBE. Patch welcome.
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