nxu/term.tal

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11 KiB
Tal
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( ANSI sequences )
( )
( set attributes: ESC [ x ; ... m -> 0:reset 1:bright 2:dim 7:reverse )
( get cursor position: ESC [ 6 n -> ESC [ $row ; $col R )
( enable line wrap: ESC [ 7 h )
( disable line wrap: ESC [ 7 l )
( )
( move cursor home: ESC [ H )
( move cursor: ESC [ $row ; $col H )
( move up: ESC [ $n A )
( move down: ESC [ $n B )
( move forward: ESC [ $n C )
( move back: ESC [ $n D )
( )
( erase from cursor to end of line: ESC [ K )
( erase from start of line to cursor: ESC [ 1 K )
( erase line: ESC [ 2 K )
( erase from current line to bottom: ESC [ J )
( erase from current line to top: ESC [ 1 J )
( erase screen: ESC [ 2 J )
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|00 @System [ &vect $2 &pad $6 &r $2 &g $2 &b $2 ]
|10 @Console [ &vect $2 &r $1 &pad $5 &w $1 ]
|20 @Screen [ &vect $2 &w $2 &h $2 &auto $1 &pad $1 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1 ]
|80 @Controller [ &vect $2 &button $1 &key $1 ]
|0000
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@tint $1 ( draw mode. 01=regular, 04=inverted )
@dirty? $1 ( screen needs redraw? )
@rows $2 ( height in characters )
@cols $2 ( width in characters )
@cur-x $2 ( cursor x: 0 <= cur-x < cols )
@cur-y $2 ( cursor y: 0 <= cur-y < rows )
@max-x $2 ( cols-1 )
@max-y $2 ( rows-1 )
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|0100
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( 80 cols x 24 rows )
#0028 .rows STZ2
#0050 .cols STZ2
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( set max row/col )
.rows LDZ2 #0001 SUB2 .max-y STZ2
.cols LDZ2 #0001 SUB2 .max-x STZ2
( set initial cursor )
#0000 .cur-x STZ2
#0000 .cur-y STZ2
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( set screen height/width based on rows/cols )
.rows LDZ2 #30 SFT2 .Screen/h DEO2
.cols LDZ2 #30 SFT2 .Screen/w DEO2
( set colors )
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#0cf0 .System/r DEO2
#0c88 .System/g DEO2
#0c0f .System/b DEO2
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( clear screen for initial draw )
;clear-screen JSR2
( set up interrupts )
;redraw .Screen/vect DEO2 ( set up screen )
;on-key .Controller/vect DEO2 ( set up keyboard )
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;on-read .Console/vect DEO2 ( set up stdin )
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( return )
BRK
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@first-addr ( -> )
;screen JMP2r
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@bol-addr ( -> addr* )
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.cols LDZ2 .cur-y LDZ2 MUL2 ;screen ADD2 JMP2r
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@cur-addr ( -> addr* )
;bol-addr JSR2 .cur-x LDZ2 ADD2 JMP2r
@eol-addr ( -> addr* )
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.cols LDZ2 .cur-y LDZ2 INC2 MUL2 ;screen ADD2 JMP2r
@last-addr ( -> )
.cols LDZ2 .rows LDZ2 MUL2 ;screen ADD2 JMP2r
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@min ( x* y* -> min* )
LTH2k JMP SWP2 POP2 JMP2r
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@max ( x* y* -> max* )
LTH2k JMP SWP2 NIP2 JMP2r
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@clear-screen
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#01 .dirty? STZ
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;screen STH2
#0000 &yloop
#0000 &xloop
#20 STH2kr STA INC2r
INC2 DUP2 .cols LDZ2 LTH2 ,&xloop JCN
POP2
INC2 DUP2 .rows LDZ2 LTH2 ,&yloop JCN
POP2 POP2r
JMP2r
@redraw
#41 .tint STZ
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.dirty? LDZ #00 EQU ,&done JCN
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;screen STH2
#0000 DUP2 .Screen/y DEO2
&yloop
#0000 DUP2 .Screen/x DEO2
&xloop
STH2kr LDA ;draw-tile JSR2
.Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
INC2 INC2r
DUP2 .cols LDZ2 LTH2 ,&xloop JCN
POP2
.Screen/y DEI2 #0008 ADD2 .Screen/y DEO2
INC2
DUP2 .rows LDZ2 LTH2 ,&yloop JCN
POP2 POP2r
;show-cursor JSR2
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#00 .dirty? STZ
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&done BRK
@hide-cursor
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.tint LDZ
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#41 .tint STZ
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;draw-cursor JSR2
.tint STZ JMP2r
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@show-cursor
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.tint LDZ
#44 .tint STZ
;draw-cursor JSR2
.tint STZ JMP2r
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@draw-cursor
.cur-x LDZ2 #30 SFT2 .Screen/x DEO2
.cur-y LDZ2 #30 SFT2 .Screen/y DEO2
.cur-y LDZ2 .cols LDZ2 MUL2 .cur-x LDZ2 ADD2 ;screen ADD2 LDA
;draw-tile JMP2
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@on-key ( -> )
.Controller/key DEI ,&ok JCN BRK
&ok ,alt? JSR ,on-alt-key JCN
,ctrl? JSR ,on-ctrl-key JCN
.Controller/key DEI .Console/w DEO BRK
@ctrl? ( -> down? ) .Controller/button DEI #01 AND JMP2r
@alt? ( -> down? ) .Controller/button DEI #02 AND JMP2r
( alt-XYZ emits ESC and then emits XYZ )
@on-alt-key ( -> )
#1b .Console/w DEO
,ctrl? JSR ,on-ctrl-key JCN
.Controller/key DEI .Console/w DEO BRK
( ctrl-$n emits: )
( 0 <= $n < @ -> $n )
( @ <= $n < ` -> $n #40 SUB )
( ` <= $n <= #ff -> $n #60 SUB )
@on-ctrl-key ( -> )
.Controller/key DEI
DUP LIT "@ LTH ,&done JCN
DUP LIT "` LTH ,&c1 JCN
LIT "` SUB ,&done JMP
&c1 LIT "@ SUB
&done .Console/w DEO BRK
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@on-read-seq ( -> )
.Console/r DEI
DUP LIT "; EQU ;next-arg JCN2
DUP LIT "0 LTH ;end-arg JCN2
DUP LIT "9 GTH ;end-arg JCN2
;add-to-arg JMP2
@end-arg ( c^ -> )
;on-read .Console/vect DEO2
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DUP LIT "h EQU ;exec-noop JCN2 ( enable line wrap )
DUP LIT "l EQU ;exec-noop JCN2 ( disable line wrap )
DUP LIT "m EQU ;exec-noop JCN2 ( set attr )
DUP LIT "n EQU ;exec-status JCN2 ( get status )
DUP LIT "H EQU ;exec-move JCN2 ( move cursor )
DUP LIT "A EQU ;exec-up JCN2 ( up )
DUP LIT "B EQU ;exec-down JCN2 ( down )
DUP LIT "C EQU ;exec-forward JCN2 ( forward )
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DUP LIT "D EQU ;exec-back JCN2 ( back )
DUP LIT "J EQU ;exec-erase-screen JCN2 ( erase screen )
DUP LIT "K EQU ;exec-erase-line JCN2 ( erase line )
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POP BRK
@exec-noop ( c^ -> )
POP BRK
@exec1 ( addr* -> )
STH2 #0001 ;read-arg-1 JSR2 STH2r JSR2 BRK
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@exec-status
POP #0000 ;read-arg-1 JSR2 #0006 NEQ2 ,&done
#1b .Console/w DEO
LIT "[ .Console/w DEO
LIT "4 .Console/w DEO
LIT "0 .Console/w DEO
LIT "; .Console/w DEO
LIT "7 .Console/w DEO
LIT "9 .Console/w DEO
LIT "R .Console/w DEO
&done BRK
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@exec-up POP ;up-n ;exec1 JMP2
@exec-down POP ;down-n ;exec1 JMP2
@exec-forward POP ;forward-n ;exec1 JMP2
@exec-back POP ;back-n ;exec1 JMP2
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@exec-erase-line
POP #0000 ;read-arg-1 JSR2
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DUP2 #0000 EQU2 ,&erase-to-end JCN
DUP2 #0001 EQU2 ,&erase-from-start JCN
DUP2 #0002 EQU2 ,&erase-full JCN
POP2 BRK
&erase-full
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POP2 ;bol-addr JSR2 ;eol-addr JSR2 ;erase JSR2 BRK
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&erase-to-end
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POP2 ;cur-addr JSR2 ;eol-addr JSR2 ;erase JSR2 BRK
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&erase-from-start
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POP2 ;bol-addr JSR2 ;cur-addr JSR2 ;erase JSR2 BRK
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@exec-erase-screen
POP #0000 ;read-arg-1 JSR2
DUP2 #0000 EQU2 ,&erase-to-end JCN
DUP2 #0001 EQU2 ,&erase-from-start JCN
DUP2 #0002 EQU2 ,&erase-full JCN
POP2 BRK
&erase-full
POP2 ;first-addr JSR2 ;last-addr JSR2 ;erase JSR2 BRK
&erase-to-end
POP2 ;bol-addr JSR2 ;last-addr JSR2 ;erase JSR2 BRK
&erase-from-start
POP2 ;first-addr JSR2 ;eol-addr JSR2 ;erase JSR2 BRK
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( TODO: needs to be smarter -- need to redraw tiles and keep x/y coords )
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@erase ( start* end* -> )
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OVR2 SWP2 SUB2 STH2 ( start* [count=start-end*] )
#20 ROT ROT ( 20 start* [count*] )
&loop ( 20 addr* [i*] )
STAk INC2 INC2r ( 20 addr+1* [i+1*] )
ORAkr STHr ,&loop JCN ( 20 addr* [i+1*] )
POP2r POP2 POP ( )
#01 .dirty? STZ ( ; FIXME just redraw affected tiles )
JMP2r ( )
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@exec-move ( c^ -> )
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POP
#0001 ;read-arg-1 JSR2 #0001 SUB2 ( row )
#0001 ;read-arg-2 JSR2 #0001 SUB2 ( col )
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;goto JSR2 BRK
@on-read-esc ( -> )
.Console/r DEI LIT "[ EQU ;start-seq JCN2
;on-read .Console/vect DEO2
;on-read JMP2
@start-seq ( -> )
;reset-args JSR2
;on-read-seq .Console/vect DEO2
BRK
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@on-read
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.Console/r DEI
DUP ,&ok JCN POP BRK
&ok #41 .tint STZ
;read JSR2 BRK
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@read ( c^ -> )
DUP #20 LTH ;read-ctrl JCN2
DUP #7f EQU ;read-del JCN2
;read-printable JMP2
@read-ctrl ( c^ -> )
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DUP #07 EQU ;read-bel JCN2
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DUP #08 EQU ;read-bs JCN2
DUP #09 EQU ;read-tab JCN2
DUP #0a EQU ;read-nl JCN2
DUP #0d EQU ;read-cr JCN2
DUP #1b EQU ;read-esc JCN2
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@read-bel ( 07 -> )
POP JMP2r ( TODO: flash terminal )
@read-bs ( 08 -> )
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POP
;hide-cursor JSR2
#0001 ;back-n JSR2
;show-cursor JSR2
JMP2r
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@read-esc ( 1b -> )
POP ;on-read-esc .Console/vect DEO2 BRK
@read-del ( 7f -> )
POP JMP2r
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( @read-tab POP JMP2r )
@read-tab
POP
.cur-x LDZ2 NIP #07 AND #08 SUB
&loop
#20 DUP ;cursor-addr JSR2 STA
;draw-tile JSR2
;forward JSR2
INC DUP ,&loop JCN
POP JMP2r
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@read-cr ( 0d -> )
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POP ;hide-cursor JSR2 #0000 .cur-x STZ2 JMP2r
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@at-max-y ( -> true? )
.cur-y LDZ2 .max-y LDZ2 EQU2 JMP2r
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@read-nl ( 0a -> )
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POP ;hide-cursor JSR2
,at-max-y JSR ;scroll JCN2 ;down JMP2
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@read-printable ( c -> )
DUP ;cursor-addr JSR2 STA
;draw-tile JSR2
;forward JMP2
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@goto ( y* x* -> )
;hide-cursor JSR2
.max-x LDZ2 ;min JSR2 .cur-x STZ2
.max-y LDZ2 ;min JSR2 .cur-y STZ2
;show-cursor JMP2
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@forward-n ( n* -> )
;hide-cursor JSR2
.cur-x LDZ2 ADD2 .max-x LDZ2 ;min JSR2 .cur-x STZ2
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;show-cursor JMP2
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@forward ( -> )
#0001 ,forward-n JMP
@back-n ( n* -> )
;hide-cursor JSR2
.cur-x LDZ2 GTH2k ,&zero JCN
SWP2 SUB2 ,&done JMP
&zero POP2 POP2 #0000
&done .cur-x STZ2 ;show-cursor JMP2
@up-n ( n* -> )
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;hide-cursor JSR2
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.cur-y LDZ2 GTH2k ,&zero JCN
SWP2 SUB2 ,&done JMP
&zero POP2 POP2 #0000
&done .cur-y STZ2 ;show-cursor JMP2
@down-n ( n* -> )
;hide-cursor JSR2
.cur-y LDZ2 ADD2 .max-y LDZ2 ;min JSR2 .cur-y STZ2
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;show-cursor JMP2
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@down ( -> )
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#0001 ,down-n JMP
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@scroll
;end-screen STH2
;screen .cols LDZ2 ADD2 STH2
&loop
STH2kr LDA #20 STH2kr STA
STH2kr .cols LDZ2 SUB2 STA
INC2r GTH2kr STHr ,&loop JCN
POP2r POP2r
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#01 .dirty? STZ
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;show-cursor JMP2
@cursor-addr ( -> addr* )
.cur-y LDZ2 .cols LDZ2 MUL2
.cur-x LDZ2 ADD2 ;screen ADD2
JMP2r
( 0 <= c < 256 )
@draw-tile ( c^ -> )
DUP #80 LTH
,draw-7bit JCN
,draw-8bit JMP
( 0 <= index < 128 )
@load-tile ( index^ -> )
#00 SWP #30 SFT2
;ascii ADD2 .Screen/addr DEO2
JMP2r
( 0 <= c < 128 )
@draw-7bit ( c^ -> )
;load-tile JSR2
.tint LDZ .Screen/sprite DEO
JMP2r
( 128 <= c < 256 )
@draw-8bit ( 8bit^ -> )
#80 SUB ;load-tile JSR2
.tint LDZ #05 EOR .Screen/sprite DEO
JMP2r
( 128 1-bit 8x8 tiles for ASCII 7-bit characters )
@ascii
~chr/ascii.tal
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@next-arg ( c^ -> )
POP
( TODO: check if we already have max args )
;args/pos LDA2k INC2 INC2 STA2 BRK
@add-to-arg ( c^ -> )
LIT "0 SUB LITr 00 STH ( [digit*] )
;args/pos LDA2 LDA2k ( addr* value* [digit*] )
#000a MUL2 STH2r ADD2 ( addr* value*10+digit )
SWP2 STA2 BRK
@read-arg-1 ( default* -> n* )
;args LDA2 ;max JMP2
@read-arg-2 ( default* -> n* )
;args INC2 INC2 LDA2 ;max JMP2
@reset-args ( -> )
;args ;args/pos STA2
#0000 ;args LITr f8
&loop STA2k INC2 INC2
INCr STHkr ,&loop JCN
POPr POP2 POP2 JMP2r
( store up to 8 arguments for control sequences )
@args $10 &pos $2
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( store characters for redraw, etc. )
@screen $0c80 ( 80 x 40 )
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@end-screen
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( ( store attributes for redraw, etc. )
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@attrs $0c80 ( 80 x 40 )
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@end-attrs )