Improve sys annotations

Finally understand location 7 (incremented at 60Hz) setting it to -1 causes clock interrupt every jiffy Improve comments in dsktrans Clarify cnop/cskp usage in iread/iwrite code iwrite and iread have common code entry at iwrite save return address at iread and overwrites return address to "skp" inst entry at iread puts "nop" inst at iwrite "xct iwrite" skips on write entry
2019-10-21 22:24:09 -04:00
parent 17c9581351
commit 4b284c6bbe
5 changed files with 63 additions and 59 deletions
@@ -123,7 +123,7 @@ coldentry:
   dzm 0100 " not re-entrant
   caf				" clear all flags
   ion				" enable interrupts
-   clon				" clear clock flag
+   clon				" clear clock overflow flag
   law 3072			" initialize display....
   wcga
   jms dspinit