system comments

2016-03-03 21:14:35 -05:00
parent 51ad7db306
commit efb0553d7f
6 changed files with 52 additions and 48 deletions
@@ -106,16 +106,16 @@ dsprestart:
   rlpd
   jmp piret

-1: ksf
-   jmp 1f
+1: ksf			" (TTY) keyboard flag set?
+   jmp 1f		"  no

   lac ttydelay
   sma
   isz ttydelay
-   krb
-   dac char
-   sad o375
-   jmp intrp1
+   krb			" read keyboard buffer
+   dac char		" save in char
+   sad o375		" interrupt char ('}'?)
+   jmp intrp1		"  yes
   lac d1
   jms putchar
      dzm char
@@ -330,9 +330,9 @@ putcr: 0
   cla
   jmp putcr i

-intrp1:
-   lac d6
-   dac .int1
+intrp1:			" here with keyboard interrupt
+   lac d6		" get keyboard special device number
+   dac .int1		" save as interrupt source
   lac d1
   jms getchar
      skp