mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-05-29 02:41:32 +00:00
188 lines
12 KiB
Forth
188 lines
12 KiB
Forth
\ *** Block No. 0 Hexblock 0
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\ *** Block No. 1 Hexblock 1
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\ loadscreen for system IO for Apple1 cas2013apr05
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1 9 +thru
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\ *** Block No. 2 Hexblock 2
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\ 65KEY? GETKEY cas2013apr05
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| $D010 Constant KBDDTA
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| $D011 Constant KBDCTL
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| CODE 65KEY? ( -- FLAG) KBDCTL lda 0>= ?[ 0 # lda ][ 1 # lda ]?
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push0a jmp end-code
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| CODE GETKEY ( -- 8B) KBDDTA lda $7F # AND
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push0a jmp end-code
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| CODE CURON ( --) NEXT JMP END-CODE
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| CODE CUROFF ( --) NEXT JMP END-CODE
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: 65KEY ( -- 8B)
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CURON BEGIN PAUSE 65KEY? UNTIL CUROFF GETKEY ;
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\ *** Block No. 3 Hexblock 3
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\ DECODE EXPECT KEYBOARD BP28MAY85) cs08aug05
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08 CONSTANT #BS $0D CONSTANT #CR &27 CONSTANT #ESC
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: 65DECODE ( ADDR CNT1 KEY -- ADDR CNT2)
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#BS CASE? IF DUP IF DEL 1- THEN EXIT THEN
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#CR CASE? IF DUP SPAN ! EXIT THEN
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>R 2DUP + R@ SWAP C! R> EMIT 1+ ;
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: 65EXPECT ( ADDR LEN1 -- ) SPAN ! 0
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BEGIN DUP SPAN @ U<
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WHILE KEY DECODE
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REPEAT 2DROP SPACE ;
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INPUT: KEYBOARD [ HERE INPUT ! ]
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65KEY 65KEY? 65DECODE 65EXPECT [
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\ *** Block No. 4 Hexblock 4
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\ senden? (emit 65emit 25JAN85RE) cas2013apr05
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| $D012 Constant DSP
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| Code send? ( -- flg )
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DSP lda $80 # AND $80 # EOR push0a jmp end-code
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Code (emit ( 8b -- )
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SP X) LDA DSP sta (drop jmp end-code
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\ *** Block No. 5 Hexblock 5
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\ EMIT CR DEL PAGE AT AT? 25JAN85RE) cas2013apr05
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| Variable out 0 out ! | &40 Constant c/row
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: 65emit ( 8b -- ) BEGIN pause send? UNTIL 1 out +! (emit ;
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: 65CR #CR 65emit out @ c/row / 1+ c/row * out ! ;
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: 65DEL ASCII _ 65emit -1 out +! ;
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: 65PAGE &24 0 DO CR LOOP out off ;
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: 65at ( row col -- ) .( at einf. ) swap c/row * + out ! ;
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: 65AT? ( -- ROW COL ) out @ c/row /mod &24 min swap ;
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\ *** Block No. 6 Hexblock 6
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\ er14dez88
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: 65type ( adr len -- ) bounds ?DO I c@ emit LOOP ;
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\ *** Block No. 7 Hexblock 7
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\ TYPE DISPLAY (BYE BP 28MAY85RE) er14dez88
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OUTPUT: DISPLAY [ HERE OUTPUT ! ]
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65EMIT 65CR 65TYPE 65DEL 65PAGE 65AT 65AT? [
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| : (bye ;
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\ *** Block No. 8 Hexblock 8
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\ B/BLK DRIVE >DRIVE DRVINIT 28MAY85RE) er14dez88
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$400 CONSTANT B/BLK
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$0AA CONSTANT BLK/DRV
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| VARIABLE (DRV 0 (DRV !
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| : DISK ( -- DEV.NO ) (DRV @ 8 + ;
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: DRIVE ( DRV# -- ) BLK/DRV * OFFSET ! ;
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\ *** Block No. 9 Hexblock 9
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\ er14dez88
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: >DRIVE ( BLOCK DRV# -- BLOCK' )
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BLK/DRV * + OFFSET @ - ;
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: DRV? ( BLOCK -- DRV# )
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OFFSET @ + BLK/DRV / ;
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: DRVINIT NOOP ;
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.( fuer reads. u. writes. ist errorhandler erforderlich )
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| : readserial ( adr blk -- )
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&27 emit .( rb ) space base push decimal . cr
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$400 bounds DO key I c! LOOP ;
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| : writeserial ( adr blk -- )
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&27 emit .( wb ) space base push decimal . cr
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$400 bounds DO I c@ emit LOOP ;
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\ *** Block No. 10 Hexblock A
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\ (r/w er14decas
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: (R/W ( ADR BLK FILE R/WF -- FLAG)
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swap abort" no file"
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IF readserial ELSE writeserial THEN false ;
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' (R/W IS R/W
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