Re: KA630: how does console I/O actually work?
Mouse <[email protected]>
| Newsgroups | gmane.os.netbsd.ports.vax |
|---|---|
| Message-ID | <[email protected]> |
> interrupt enable <6> Read/write. Cleared by processor
[...]
> at IPL 14 (hex). That is, an interrupt is
> requested whenever the function {interrupt
> enable AND ready} changes from 0 to 1.
I don't, however, see any language implying that the interrupt request
is - or isn't - rescinded if DONE or IE is cleared before the interrupt
is taken. I don't rescind them. simh does. NetBSD seems to tolerate
either (not surprising).
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