mwilson@crash.cts.com (Marc Wilson) (12/17/89)
Is there anyone out there who has any experience with using interrupts on a Kaypro? I refer specifically to a Kaypro 4/84 ( 81-185 motherboard ). I've been fooling around with it for quite some time now, but can't get a thing out of it. I've replaced both the CPU and the offending SIO chip, but still no interrupts. The computer works fine... so I know NMI's aren't being ignored ( both the floppy and the HD controller use NMI's to indicate that they need service ). Or did my adding the HD controller to the setup do something? The mother- board has the connector, just as it should. I used all Kaypro parts, except for the HD itself ( which was an old 10 Mb I had on the shelf ). The motherboard originally had the 292 ROM in it... I've replaced that with the 302-C ROM in a 2764. The problem exists under all versions of CP/M that I've tried. These are F, G, and H. It's running F right now. Is there something in the Kaypro design that precludes using the Z80 maskable interrupts? The schematics for the boards don't indicate that... They make it seem very straightforward. I've also tried the PD program's INTTERM and HMK2112. Both should operate in an interrupt mode. Neither does. Help! -- Marc -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Marc Wilson ARPA: ...!crash!mwilson@nosc.mil ...!crash!pnet01!pro-sol!mwilson@nosc.mil UUCP: [ cbosgd | hp-sdd!hplabs | sdcsvax | nosc ]!crash!mwilson INET: mwilson@crash.CTS.COM ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~