Subject: Re: Gateway 2000 keyboard vs ddb
To: None <bde@zeta.org.au>
From: Mike Long <mike.long@analog.com>
List: port-i386
Date: 03/21/1995 11:21:17
>>>Yes, pcvt is using delay(6) calls, why do you recommend 7 or higher ?
>
>>According to _The Undocumented PC_ by Frank Gilluwe (sp?) the spec for
>>the PS/2's keyboard controller requires that there be a 7ms delay
>>between accesses to the controller's status port and its control port.
>
>There's only one delay(6) in pcvt, and it's between accesses to the
>status port and the _data_ port. What does the book say about the
>data port? Does it say something about delaying between accesses to
>the control port and the status port?
Eh, I should have said data port instead of control port, sorry.
I don't have the book with me now, so I can't double-check.
--
Mike Long <mike.long@analog.com> PGP 2.6.2 public key signature:
VLSI Design Engineer CCBF225E7D3F7ECB2C8F7ABB15D9BE7B
Analog Devices, CPD Division
Norwood, MA 02062 USA assert(*this!=opinionof(Analog));