dg@lakart.UUCP (David Goodenough) (10/14/89)
I'm posting this to comp.os.cpm, since the question relates to a chip in my Televideo 803 CP/M machine. If anyone can recommend a better newsgroup to post to, please do so. Followups will go to comp.sources.wanted, or you can just E-mail them to me. The serial I/O chip in the Televideo 803 appears to be a hybrid cross between a CTC, PIO, and SIO, all in one package: the Mostek 3801. As delivered, the cpu has to poll the chip to receive incoming characters. I would like to write a serial driver that uses interrupts, but I haven't been able to find how to get the chip to generate an interrupt. I have run tests with all the vectors in the interrupt table filled in, but my suspicion is that I have to set a bit somewhere in a register to allow the chip to generate interrupts for received characters. Any ideas, hints, information, anything???? Thanks in advance, -- dg@lakart.UUCP - David Goodenough +---+ IHS | +-+-+ ....... !harvard!xait!lakart!dg +-+-+ | AKA: dg%lakart.uucp@xait.xerox.com +---+