dyer@spdcc.COM (Steve Dyer) (08/07/88)
This would more properly belong in comp.sys.sun, but the moderation delay makes it all but useless for problems which require fast attention. I wrote a magtape driver for Sun OS 3.x (3.2 or 3.5, I can't remember) and have now been asked to get it running under Sun OS 4.0. After some very simple changes (where the include files can be found), the driver compiled and linked under Sun OS 4.0. At boot time, the device successfully autoconfigures, but all system calls simply sleep, as if the controller isn't interrupting. I know the hardware is working, because I can boot the same Sun machine and controller under Sun OS 3.5 and the magtape responds perfectly. The controller, by the way, is a Multibus device attached to a VME-to-Multibus converter. I believe the config map is vme16d16. I looked through the latest revision of "Writing Device Driver for Sun..." for any differences between OS 4.0 and earlier OS version, but nothing jumped out at me. Before I start digging deeper, can anyone say whether or not I'm missing anything? -- Steve Dyer dyer@harvard.harvard.edu dyer@spdcc.COM aka {harvard,husc6,linus,ima,bbn,m2c,mipseast}!spdcc!dyer