Path: utzoo!mnetor!uunet!mcvax!nikhefk!henkp
From: henkp@nikhefk.UUCP (Henk Peek)
Newsgroups: comp.sys.att
Subject: M24, ATT6300 interrupt enable SCC 8530 (HDLC)
Message-ID: <296@nikhefk.UUCP>
Date: 22 Dec 87 23:48:25 GMT
Reply-To: henkp@nikhefk.UUCP (Henk Peek)
Organization: Nikhef-K, Amsterdam (the Netherlands).
Lines: 14
Keywords: M24  ATT6300  8530  interrupt  HDLC



The M24 (ATT6300) has one serial IC on the motherbord. This is the 8250
or 8530. Only one at the same time. :-( They are using interrupt 4
shared with the I/O slots. The 8250 generate its own interrupt enable.
The 8742 (or a small board with a TMS7000) keyboard interface generate
the interrupt enable for the 8530. Which I/O instructions to the
keyboard interface micro enables (disables) the 8530 interrupt?

I test a HDLC driver and can generate interrupts with a hardware patch.
Has someone done this before?

Mail: Henk Peek, Nikhef, PB 4395, 1009 AJ Amsterdam, Holland
Uucp: henkp@nikhefk.uucp   ..!uunet!mcvax!nikhefk!henkp