mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-05-29 02:41:32 +00:00
171 lines
10 KiB
Forth
171 lines
10 KiB
Forth
\ *** Block No. 0 Hexblock 0
|
|
\ Multitasking Extension to volksFORTH cas 26jan06
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
\ *** Block No. 1 Hexblock 1
|
|
\ Tasker Loadscreen
|
|
|
|
\NEEDS CODE abort( Assembler needed )
|
|
hex
|
|
1 5 +thru \ load Tasker
|
|
7 load \ Task-Demo
|
|
decimal
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
\ *** Block No. 2 Hexblock 2
|
|
\ MULTITASKER BP 13.9.84 )
|
|
|
|
CODE STOP
|
|
SP 2DEC IP LDA SP X) STA IP 1+ LDA SP )Y STA
|
|
SP 2DEC RP LDA SP X) STA RP 1+ LDA SP )Y STA
|
|
6 # LDY SP LDA UP )Y STA INY SP 1+ LDA UP )Y STA
|
|
1 # LDY TYA CLC UP ADC W STA
|
|
TXA UP 1+ ADC W 1+ STA W 1- JMP END-CODE
|
|
|
|
| CREATE TASKPAUSE ASSEMBLER
|
|
2C # LDA UP X) STA ' STOP @ JMP END-CODE
|
|
|
|
: SINGLETASK [ ' PAUSE @ ] LITERAL ['] PAUSE ! ;
|
|
|
|
: MULTITASK TASKPAUSE ['] PAUSE ! ;
|
|
|
|
\ *** Block No. 3 Hexblock 3
|
|
\ PASS ACTIVATE KS 8 MAY 84 )
|
|
|
|
: PASS ( N0 .. NR-1 TADR R -- )
|
|
BEGIN [ ROT ( TRICK ! ) ]
|
|
SWAP 02C OVER C! \ AWAKE TASK
|
|
R> -ROT \ IP R ADDR
|
|
8 + >R \ S0 OF TASK
|
|
R@ 2+ @ SWAP \ IP R0 R
|
|
2+ 2* \ BYTES ON TASKSTACK
|
|
\ INCL. R0 & IP
|
|
R@ @ OVER - \ NEW SP
|
|
DUP R> 2- ! \ INTO SSAVE
|
|
SWAP BOUNDS ?DO I ! 2 +LOOP ; RESTRICT
|
|
|
|
|
|
|
|
\ *** Block No. 4 Hexblock 4
|
|
\
|
|
|
|
: ACTIVATE ( TADR --)
|
|
0 [ -ROT ( TRICK ! ) ] REPEAT ; -2 ALLOT RESTRICT
|
|
|
|
: SLEEP ( TADR --) 4C SWAP C! ; \ JMP-OPCODE
|
|
|
|
: WAKE ( TADR --) 2C SWAP C! ; \ BIT-OPCODE
|
|
|
|
| : TASKERROR ( STRING -)
|
|
STANDARDI/O SINGLETASK ." TASK ERROR : " COUNT TYPE
|
|
MULTITASK STOP ;
|
|
|
|
|
|
|
|
|
|
\ *** Block No. 5 Hexblock 5
|
|
\ BUILDING A TASK BP 13.9.84 )
|
|
|
|
: TASK ( RLEN SLEN -- )
|
|
ALLOT \ STACK
|
|
HERE 00FF AND 0FE =
|
|
IF 1 ALLOT THEN \ 6502-ALIGN
|
|
UP@ HERE 100 CMOVE \ INIT USER AREA
|
|
HERE 04C C, \ JMP OPCODE TO SLEEP TASK
|
|
UP@ 1+ @ ,
|
|
DUP UP@ 1+ ! \ LINK TASK
|
|
3 ALLOT \ ALLOT JSR WAKE
|
|
DUP 6 - DUP , , \ SSAVE AND S0
|
|
2DUP + , \ HERE + RLEN = R0
|
|
UNDER + HERE - 2+ ALLOT ['] TASKERROR OVER
|
|
[ ' ERRORHANDLER >BODY C@ ] LITERAL + ! CONSTANT ;
|
|
|
|
\ *** Block No. 6 Hexblock 6
|
|
\ MORE TASKS KS/BP 26APR85RE)
|
|
|
|
: RENDEZVOUS ( SEMAPHORADR -) DUP UNLOCK PAUSE LOCK ;
|
|
|
|
| : STATESMART STATE @ IF [COMPILE] LITERAL THEN ;
|
|
|
|
: 'S ( TADR - ADR.OF.TASKUSERVAR)
|
|
' >BODY C@ + STATESMART ; IMMEDIATE
|
|
|
|
\ SYNTAX: 2 DEMOTASK 'S BASE ! \ MAKES DEMOTASK WORKING BINARY
|
|
|
|
: TASKS ( -) ." MAIN " CR UP@ DUP 1+ @
|
|
BEGIN 2DUP - WHILE
|
|
DUP [ ' R0 >BODY C@ ] LITERAL + @ 6 + NAME> >NAME .NAME
|
|
DUP C@ 04C = IF ." SLEEPING" THEN CR 1+ @ REPEAT 2DROP ;
|
|
|
|
\ *** Block No. 7 Hexblock 7
|
|
\ TASKDEMO 27APR85RE)
|
|
: TASKMARK ;
|
|
|
|
VARIABLE COUNTER COUNTER OFF
|
|
|
|
100 100 TASK BACKGROUND
|
|
|
|
: >COUNT ( N -) BACKGROUND 1 PASS COUNTER !
|
|
BEGIN COUNTER @ DUP 1- COUNTER ! ?DUP
|
|
WHILE PAUSE 0 <# #S #> type REPEAT stop ;
|
|
|
|
: WAIT BACKGROUND SLEEP ;
|
|
|
|
: GO BACKGROUND WAKE ;
|
|
|
|
|
|
\ *** Block No. 8 Hexblock 8
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
\ *** Block No. 9 Hexblock 9
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|