mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-11-22 20:34:07 +00:00
137 lines
8.4 KiB
Forth
137 lines
8.4 KiB
Forth
\ *** Block No. 0 Hexblock 0
|
||
\\ *** Multitasker *** bp 12oct86
|
||
|
||
Dieses File enth„lt die Worte f<EFBFBD>r das Multitasking.
|
||
|
||
Mit TASK werden Tasks eingerichtet. Jede Task hat ihren eige-
|
||
nen Daten- und Returnstack, deren Gr”že beim Einrichten der
|
||
Task angegeben werden muž.
|
||
|
||
Mit MULTITASK wird der Tasker eingeschaltet, mit SINGLETASK
|
||
abgeschaltet. Mit TASKS kann man die Tasks im System und
|
||
ihren Zustand anzeigen.
|
||
|
||
N„heres zur Funktionsweise des Taskers findet man im Handbuch,
|
||
ebenso wie ein ausf<EFBFBD>hrliches Glossar !
|
||
|
||
|
||
\ *** Block No. 1 Hexblock 1
|
||
\ Multitasker Loadscreen 22nov86bp
|
||
|
||
Onlyforth
|
||
|
||
\needs Code 2 loadfrom assemble.scr
|
||
\needs multitask 1 +load
|
||
|
||
02 05 +thru \ Tasker
|
||
06 +load \ Spooler
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
\ *** Block No. 2 Hexblock 2
|
||
\ stop singletask multitask 14sep86we
|
||
|
||
Code stop
|
||
.l FP IP suba .w IP SP -) move
|
||
.l FP RP suba .w RP SP -) move
|
||
UP R#) D6 move D6 reg) A0 lea
|
||
.l FP SP suba .w SP 8 A0 D) move
|
||
2 A0 D) D6 move D6 reg) jmp end-code
|
||
|
||
Label taskpause
|
||
UP R#) D6 move D6 reg) A0 lea $4E43 # A0 ) move
|
||
Forth ' stop @ Assembler bra end-code
|
||
|
||
: singletask [ ' pause @ ] Literal ['] pause ! ;
|
||
|
||
: multitask taskpause ['] pause ! ;
|
||
\ *** Block No. 3 Hexblock 3
|
||
\ pass activate bp 12oct86
|
||
|
||
| : (pass ( n0 ... nm-1 Taskaddr m -- )
|
||
rdrop swap \ delete IP of ACTIVATE or PASS
|
||
$4E43 over ! \ awake Task
|
||
r> -rot \ get the IP; Stack: IP m Taskaddr
|
||
&10 + >r \ push s0 of Task
|
||
r@ 2+ @ swap \ Stack-Top: IP r0 m
|
||
2+ 2* \ bytes on Taskstack incl. r0 & IP
|
||
r@ @ over - \ new SP
|
||
dup r> 2- ! \ into Ssave
|
||
swap bounds ?DO I ! 2 +LOOP ;
|
||
|
||
: activate ( Taddr -- ) 0 (pass ; restrict
|
||
|
||
: pass ( n0 ... nm-1 Taskaddr m ) (pass ; restrict
|
||
\ *** Block No. 4 Hexblock 4
|
||
\ sleep wake taskerror bp 12oct86
|
||
|
||
: sleep ( Taddr -- ) $3C3C swap ! ; \ # D6 move opcode
|
||
: wake ( Taddr -- ) $4E43 swap ! ; \ Trap 3 opcode
|
||
|
||
| : taskerror ( string -- )
|
||
standardi/o singletask bell
|
||
at? &24 0 at ." Task error : " rot count type at
|
||
multitask stop ;
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
\ *** Block No. 5 Hexblock 5
|
||
\ Task 14sep86we
|
||
|
||
: Task ( rlen slen -- )
|
||
2 arguments
|
||
0 Constant here >r \ Task-dp
|
||
even dup r@ + r@ 2- ! allot even \ 68000 align
|
||
up@ here 100 cmove \ init user area
|
||
here $3C3C , up@ 2+ @ , \ JMP opcode to sleep task
|
||
$4EF3 , $6800 ,
|
||
dup up@ 2+ ! \ link task
|
||
dup 6 - dup , , \ ssave and s0
|
||
2dup + , \ here + rlen = r0
|
||
r@ , \ dp
|
||
under + here - allot 0 ,
|
||
['] taskerror swap [ ' errorhandler >body c@ ] Literal + !
|
||
r> 2- 2- , ;
|
||
\ *** Block No. 6 Hexblock 6
|
||
\ rendezvous 's tasks 22nov86bp
|
||
|
||
: rendezvous ( semaphoraddr -- )
|
||
dup unlock pause lock ;
|
||
|
||
| : statesmart state @ IF [compile] Literal THEN ;
|
||
|
||
: 's ( Taddr -- adr ) \ adr is adress of the foll. uservar
|
||
' >body c@ + statesmart ; immediate
|
||
|
||
: tasks ( -- )
|
||
cr ." Main " up@ dup 2+ @
|
||
BEGIN 2dup - WHILE cr dup [ ' r0 >body c@ ] Literal + @
|
||
2+ @ >name .name
|
||
dup @ $3C3C = IF ." sleeping" THEN
|
||
2+ @ REPEAT 2drop ;
|
||
\ *** Block No. 7 Hexblock 7
|
||
\ Printerspool 21oct86we
|
||
|
||
$100 $200 Task spooler
|
||
|
||
: spool' ( -- ) \ reads word
|
||
' isfile@ offset @ base @ spooler depth 1- 6 min pass
|
||
base ! offset ! isfile ! execute
|
||
true abort" SPOOL' ready for next job!" stop ;
|
||
|
||
\\ syntax:
|
||
spool' listing
|
||
spool' printall
|
||
from to spool' pthru
|
||
from to spool' document
|
||
|
||
|