nxu/term.tal

293 lines
6.7 KiB
Tal

( 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 )
|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
@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 )
|0100
( 80 cols x 24 rows )
#0028 .rows STZ2
#0050 .cols STZ2
( 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
( set screen height/width based on rows/cols )
.rows LDZ2 #30 SFT2 .Screen/h DEO2
.cols LDZ2 #30 SFT2 .Screen/w DEO2
( set colors )
#0cf0 .System/r DEO2
#0c88 .System/g DEO2
#0c0f .System/b DEO2
( 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 )
;on-read .Console/vect DEO2 ( set up stdin )
( return )
BRK
@min ( x* y* -> min* )
LTH2k JMP SWP2 POP2 JMP2r
( @max ( x* y* -> max* )
LTH2k JMP SWP2 NIP2 JMP2r )
@clear-screen
#01 .dirty? STZ
;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
.dirty? LDZ #00 EQU ,&done JCN
;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
#00 .dirty? STZ
&done BRK
@hide-cursor
.tint LDZ
#41 .tint STZ
;draw-cursor JSR2
.tint STZ JMP2r
@show-cursor
.tint LDZ
#44 .tint STZ
;draw-cursor JSR2
.tint STZ JMP2r
@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
@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
@on-read
.Console/r DEI
DUP ,&ok JCN POP BRK
&ok #41 .tint STZ
;read JSR2 BRK
@read ( c^ -> )
DUP #20 LTH ;read-ctrl JCN2
DUP #7f EQU ;read-del JCN2
;read-printable JMP2
@read-ctrl ( c^ -> )
DUP #07 EQU ;read-bel JCN2 ( TODO: flash )
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
( TODO: we need line-editing! )
@read-bel POP JMP2r
@read-bs POP JMP2r ( POP ;scroll JMP2 )
@read-esc POP JMP2r
@read-del POP JMP2r
( @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
@read-cr ( 0d -> )
POP ;hide-cursor JSR2 #0000 .cur-x STZ2 JMP2r
@at-max-y ( -> true? )
.cur-y LDZ2 .max-y LDZ2 EQU2 JMP2r
@read-nl ( 0a -> )
POP ;hide-cursor JSR2
,at-max-y JSR ;scroll JCN2 ;down JMP2
@read-printable ( c -> )
DUP ;cursor-addr JSR2 STA
;draw-tile JSR2
;forward JMP2
@forward-n ( n* -> )
;hide-cursor JSR2
.cur-x LDZ2 ADD2 .max-x LDZ2 ;min JSR2 .cur-x STZ2
;show-cursor JMP2
@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
@back ( -> )
#0001 ,back-n JMP
@up-n ( n* -> )
;hide-cursor JSR2
.cur-y LDZ2 GTH2k ,&zero JCN
SWP2 SUB2 ,&done JMP
&zero POP2 POP2 #0000
&done .cur-y STZ2 ;show-cursor JMP2
@up ( -> )
#0001 ,up-n JMP
@down-n ( n* -> )
;hide-cursor JSR2
.cur-y LDZ2 ADD2 .max-y LDZ2 ;min JSR2 .cur-y STZ2
;show-cursor JMP2
@down ( -> )
#0001 ,down-n JMP
@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
#01 .dirty? STZ
;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
( store characters for redraw, etc. )
@screen $0c80 ( 80 x 40 )
@end-screen
( ( store attributes for redraw, etc. )
@attrs $0c80 ( 80 x 40 )
@end-attrs )