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grid: add XYMODE

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In VE on the SMS, the first contents line would always be cleared
because of NEWLN being called when the FBUF would spit its last
char. Inconvenient...

I've added a "graphical" mode to the grid subsystem to inhibit this
behavior in a graphical situation such as in VE.

Also, write a more complete Grid documentation.
This commit is contained in:
Virgil Dupras 2020-11-14 22:35:08 -05:00
parent 7722db0762
commit d3049b2404
9 changed files with 65 additions and 31 deletions
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6
arch/z80/sms/xcomp.fs
View File

@ -7,11 +7,11 @@ RS_ADDR 0x80 - CONSTANT SYSVARS
0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT
SYSVARS 0x70 + CONSTANT GRID_MEM
SYSVARS 0x72 + CONSTANT CPORT_MEM
SYSVARS 0x73 + CONSTANT CPORT_MEM
0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2
SYSVARS 0x73 + CONSTANT PAD_MEM
SYSVARS 0x74 + CONSTANT PAD_MEM
5 LOAD ( z80 assembler )
: ZFILL, ( u ) 0 DO 0 A, LOOP ;
262 LOAD ( xcomp )
@ -36,6 +36,6 @@ CREATE ~FNT CPFNT7x7
(entry) _
( Update LATEST )
PC ORG @ 8 + !
," VDP$ 0 0 AT-XY PAD$ (im1) " EOT,
," VDP$ GRID$ PAD$ (im1) " EOT,
ORG @ 0x100 - 256 /MOD 2 PC! 2 PC!
H@ 256 /MOD 2 PC! 2 PC!

6
arch/z80/sms/xcompkbd.fs
View File

@ -8,11 +8,11 @@ RS_ADDR 0x80 - CONSTANT SYSVARS
0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT
SYSVARS 0x70 + CONSTANT GRID_MEM
SYSVARS 0x72 + CONSTANT CPORT_MEM
SYSVARS 0x73 + CONSTANT CPORT_MEM
0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2
SYSVARS 0x73 + CONSTANT PS2_MEM
SYSVARS 0x74 + CONSTANT PS2_MEM
5 LOAD ( z80 assembler )
: ZFILL, ( u ) 0 DO 0 A, LOOP ;
262 LOAD ( xcomp )
@ -37,6 +37,6 @@ CREATE ~FNT CPFNT7x7
(entry) _
( Update LATEST )
PC ORG @ 8 + !
," VDP$ 0 0 AT-XY PS2$ (im1) " EOT,
," VDP$ GRID$ PS2$ (im1) " EOT,
ORG @ 0x100 - 256 /MOD 2 PC! 2 PC!
H@ 256 /MOD 2 PC! 2 PC!

6
arch/z80/sms/xcompsdc.fs
View File

@ -9,11 +9,11 @@ RS_ADDR 0x80 - CONSTANT SYSVARS
0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT
SYSVARS 0x70 + CONSTANT GRID_MEM
SYSVARS 0x72 + CONSTANT CPORT_MEM
SYSVARS 0x73 + CONSTANT CPORT_MEM
0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2
SYSVARS 0x73 + CONSTANT PS2_MEM
SYSVARS 0x74 + CONSTANT PS2_MEM
5 LOAD ( z80 assembler )
: ZFILL, ( u ) 0 DO 0 A, LOOP ;
262 LOAD ( xcomp )
@ -40,6 +40,6 @@ CREATE ~FNT CPFNT7x7
(entry) _
( Update LATEST )
PC ORG @ 8 + !
," VDP$ 0 0 AT-XY PS2$ BLK$ (im1) " EOT,
," VDP$ GRID$ PS2$ BLK$ (im1) " EOT,
ORG @ 0x100 - 256 /MOD 2 PC! 2 PC!
H@ 256 /MOD 2 PC! 2 PC!

8
arch/z80/sms/xcomptextmode.fs
View File

@ -9,11 +9,11 @@ RS_ADDR 0x80 - CONSTANT SYSVARS
0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT
SYSVARS 0x70 + CONSTANT GRID_MEM
SYSVARS 0x72 + CONSTANT CPORT_MEM
SYSVARS 0x73 + CONSTANT CPORT_MEM
0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2
SYSVARS 0x73 + CONSTANT PS2_MEM
SYSVARS 0x74 + CONSTANT PS2_MEM
5 LOAD ( z80 assembler )
: ZFILL, ( u ) 0 DO 0 A, LOOP ;
262 LOAD ( xcomp )
@ -33,10 +33,12 @@ CREATE ~FNT CPFNT5x7
402 404 LOADR ( Grid )
625 626 LOADR ( SMS ports )
620 LOAD ( PAD ) : (ps2kc) (ps2kcA) ; 411 414 LOADR
622 LOAD ( SPI )
1 CONSTANT SDC_DEVID 423 436 LOADR ( SDC )
390 LOAD ( xcomp core high )
(entry) _
( Update LATEST )
PC ORG @ 8 + !
," TMS$ 0 0 AT-XY PS2$ (im1) " EOT,
," TMS$ GRID$ PS2$ BLK$ ' SDC@ BLK@* ! (im1) " EOT,
ORG @ 0x100 - 256 /MOD 2 PC! 2 PC!
H@ 256 /MOD 2 PC! 2 PC!

4
arch/z80/ti84/xcomp.fs
View File

@ -4,7 +4,7 @@ RS_ADDR 0x80 - CONSTANT SYSVARS
0x8000 CONSTANT HERESTART
SYSVARS 0x70 + CONSTANT LCD_MEM
SYSVARS 0x72 + CONSTANT GRID_MEM
SYSVARS 0x74 + CONSTANT KBD_MEM
SYSVARS 0x75 + CONSTANT KBD_MEM
0x01 CONSTANT KBD_PORT
5 LOAD ( z80 assembler )
: ZFILL, ( u ) 0 DO 0 A, LOOP ;
@ -72,6 +72,6 @@ CREATE ~FNT CPFNT3x5
(entry) _
( Update LATEST )
PC ORG @ 8 + !
," LCD$ KBD$ " EOT,
," LCD$ KBD$ GRID$ " EOT,
ORG @ 0x100 - 256 /MOD 2 PC! 2 PC!
H@ 256 /MOD 2 PC! 2 PC!

19
blk.fs
View File

@ -902,15 +902,15 @@ CREATE PREVPOS 0 , CREATE PREVBLK 0 , CREATE xoff 0 ,
DUP CMD 2+ C! CMD FIND IF EXECUTE ELSE DROP THEN
0 ACC ! UPPER 'Q' = ;
: bufp ( buf -- )
DUP 3 col- + SWAP DO I C@ 0x20 MAX EMIT LOOP ;
DUP 3 col- + SWAP DO I C@ EMIT LOOP ;
: bufs
1 aty ." I: " IBUF bufp
2 aty ." F: " FBUF bufp
large? IF 0 3 gutter THEN ;
: VE
clrscr 0 ACC ! 0 PREVPOS ! nums contents
1 XYMODE C! clrscr 0 ACC ! 0 PREVPOS ! nums contents
BEGIN xoff? status bufs setpos KEY handle UNTIL
19 aty (infl) ;
0 XYMODE C! 19 aty (infl) ;
( ----- 160 )
( AVR Programmer, load range 160-163. doc/avr.txt )
( page size in words, 64 is default on atmega328P )
@ -2209,23 +2209,17 @@ XCURRENT @ _xapply ORG @ 0x04 ( stable ABI BOOT ) + !
( ----- 401 )
Grid subsystem
Given a device driver following the Grid protocol, implement
AT-XY and (emit). (emit) makes the grid behave like a regular
terminal, honoring line feeds and backspaces, wrapping at the
end of a line.
2 bytes of system memory at GRID_MEM are needed for cursor
position.
See doc/grid.txt.
Load range: B402-B403
( ----- 402 )
: XYPOS [ GRID_MEM LITN ] ;
: XYPOS [ GRID_MEM LITN ] ; : XYMODE [ GRID_MEM LITN ] 2+ ;
: _cl* COLS LINES * ;
: AT-XY ( x y -- ) COLS * + _cl* MOD XYPOS ! ;
'? NEWLN NIP NOT [IF]
: NEWLN ( ln -- ) COLS * DUP COLS + SWAP DO 0 I CELL! LOOP ;
[THEN]
: _lf
: _lf XYMODE C@ IF EXIT THEN
XYPOS @ COLS / 1+ LINES MOD DUP NEWLN
COLS * XYPOS ! ;
: _bs 0 ( blank ) XYPOS @ TUCK CELL! ( pos ) 1-
@ -2237,6 +2231,7 @@ Load range: B402-B403
0x20 - DUP 0< IF DROP EXIT THEN
XYPOS @ CELL!
XYPOS @ 1+ DUP COLS MOD IF XYPOS ! ELSE _lf THEN ;
: GRID$ 0 XYPOS ! 0 XYMODE C! ;
( ----- 410 )
PS/2 keyboard subsystem

5
cvm/forth.c
View File

@ -52,11 +52,8 @@ static void iowr_stdio(uint8_t val)
if (fp != NULL) {
putchar(val);
} else {
if (val >= 0x20 || val == '\n') {
if (val >= 0x20) {
wechochar(w, val);
} else if (val == 0x08) {
int y, x; getyx(w, y, x);
wmove(w, y, x-1);
}
}
}

2
cvm/forth.fs
View File

@ -9,7 +9,7 @@ SYSVARS 0x70 + CONSTANT GRID_MEM
(entry) _
( Update LATEST )
PC ORG @ 8 + !
," BLK$ ' EFS@ BLK@* ! ' EFS! BLK!* ! 0 0 AT-XY " EOT,
," BLK$ ' EFS@ BLK@* ! ' EFS! BLK!* ! GRID$ " EOT,
ORG @ 256 /MOD 2 PC! 2 PC!
H@ 256 /MOD 2 PC! 2 PC!

40
doc/grid.txt Normal file
View File

@ -0,0 +1,40 @@
# The Grid subsystem
The grid subsystem at B401 supplies a set of words on top of
the Grid protocol (see doc/protocol.txt) that facilitates the
development of programs presenting a complex text interface,
for example, the Visual Editor.
It create the concept of a cursor, always being a some position
on screen. That position is in the variable XYPOS, which is a
simple integer following the same "pos" logic as in the Grid
protocol.
It implements (emit), which sets the cell under the cursor to
the specified character, then moves the cursor right. If the
cursor is at the last column of the screen, it overflows to the
next line. If it's on the last line, it overflows to the first
line.
Grid's (emit) handles 0xd by moving the cursor to the next line
and 0x8 by moving the cursor left.
AT-XY ( x y -- ) moves the cursor to the specified position. It
is equivalent to setting XYPOS directly, but uses separate X
and y numbers.
When the grid's cursor enters a new line, it clears its
contents through a repeated call to CELL!. That implementation
is in its world named NEWLN ( ln -- ). This word can be over-
ridden. If it exists when the grid subsystem is loaded, the ex-
isting NEWLN will be used.
The clearing of the newly entered line is usually only desirable
when in "shell" mode. In "graphical" mode, we usually don't
want this to happen. XYMODE is a flag to indicate whether the
grid system is in "graphical" mode. When its value is nonzero,
NEWLN is not called when entering a new line.
At build time, the Grid subsystem needs 3 bytes of system me-
mory through the GRID_MEM constant. At run time, GRID$ needs to
be called to initialize the system.