Path: utzoo!attcan!uunet!mcvax!unido!rsp!tom
From: tom@rsp.UUCP (Thomas Ruf)
Newsgroups: comp.os.minix
Subject: Re: Help! Minix 1.3 & PS/2 Model 80
Summary: PS/2 floppy controller
Message-ID: <321@rsp.UUCP>
Date: 17 Jan 89 10:23:34 GMT
References: <1023@uvm-gen.UUCP>
Organization: RSP Datensysteme, W-Germany
Lines: 27

In article <1023@uvm-gen.UUCP>, ackerman@uvm-gen.UUCP (Steve Ackerman) writes:
> Does anyone (maybe Scott??) know what the value of the "sense interrupt
> status" command is?

From "IBM PS/2 Model 50 & 60 Technical Reference, page 4-143" :

	Sense Interrupt Status Command Format

	Command Phase
			7 6 5 4 3 2 1 0
	Byte 0		0 0 0 0 1 0 0 0

	Result Phase

	Byte 0		Status Register 0 (ST 0)
	Byte 1		Present Cylinder Number (PCN)

On Microchannel systems, every device driver definitely MUST DEACTIVATE
the corresponding IRQ line before it enables interrupts again. Otherwise
the interrupt routine will be reentered forever ...

However, I don't know whether the "Sense Interrupt Status Command" will
do this for the floppy controller. But I also didn't find any other
reference to "interrupt" in the floppy controller section of the
above mentioned manual.
I hope this helps and good luck

Thomas


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Thomas Ruf			{uunet,mcvax}!unido!rsp!tom
RSP Datensysteme GmbH		West-Germany
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D-7590 Achern