henkp@nikhefk.UUCP (Henk Peek) (12/23/87)
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