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sms: add cursor visual indicator in VDP mode 4 

This required the change of CURSOR! signature: we now supply it
with both old and new cursor positions.

Also, fix broken _bs in Grid subsystem.
This commit is contained in:
Virgil Dupras 2020-11-16 10:05:48 -05:00
parent 74d2a5d722
commit cf79ceefea
4 changed files with 19 additions and 14 deletions
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10
arch/z80/sms/blk.fs
View File

@ -29,8 +29,13 @@ always stay zero. )
( blank row ) 4 _zero ;
: CELL! ( c pos )
2 * 0x7800 OR _ctl ( c )
0x20 - ( glyph ) 0x5e MOD _data 0 _data ;
0x20 - ( glyph ) 0x5e MOD _data ;
( ----- 604 )
: CURSOR! ( new old -- )
( unset palette bit in old tile )
2 * 1+ 0x7800 OR _ctl 0 _data
( set palette bit for at specified pos )
2 * 1+ 0x7800 OR _ctl 0x8 _data ;
: VDP$
9 0 DO _idat I 2 * + @ _ctl LOOP _blank
( palettes )
@ -40,8 +45,7 @@ always stay zero. )
0x4000 _ctl 0x5e 0 DO ~FNT I 7 * + _sfont LOOP
( bit 6, enable display, bit 7, ?? ) 0x81c0 _ctl ;
: COLS 32 ;
: LINES 24 ;
: COLS 32 ; : LINES 24 ;
( ----- 610 )
Pad driver - read input from MD controller

8
blk.fs
View File

@ -2214,8 +2214,8 @@ See doc/grid.txt.
Load range: B402-B403
( ----- 402 )
: XYPOS [ GRID_MEM LITN ] ; : XYMODE [ GRID_MEM LITN ] 2+ ;
'? CURSOR! NIP NOT [IF] : CURSOR! DROP ; [THEN]
: XYPOS! COLS LINES * MOD DUP CURSOR! XYPOS ! ;
'? CURSOR! NIP NOT [IF] : CURSOR! 2DROP ; [THEN]
: XYPOS! COLS LINES * MOD DUP XYPOS @ CURSOR! XYPOS ! ;
: AT-XY ( x y -- ) COLS * + XYPOS! ;
'? NEWLN NIP NOT [IF]
: NEWLN ( ln -- ) COLS * DUP COLS + SWAP DO 0x20 I CELL! LOOP ;
@ -2223,7 +2223,7 @@ Load range: B402-B403
: _lf XYMODE C@ IF EXIT THEN
XYPOS @ COLS / 1+ LINES MOD DUP NEWLN
COLS * XYPOS! ;
: _bs 0 ( blank ) XYPOS @ TUCK CELL! ( pos ) 1- XYPOS! ;
: _bs 0x20 ( blank ) XYPOS @ TUCK CELL! ( pos ) 1- XYPOS! ;
( ----- 403 )
: (emit)
DUP 0x08 = IF DROP _bs EXIT THEN
@ -2231,7 +2231,7 @@ Load range: B402-B403
DUP 0x20 < IF DROP EXIT THEN
XYPOS @ CELL!
XYPOS @ 1+ DUP COLS MOD IF XYPOS! ELSE _lf THEN ;
: GRID$ 0 XYPOS! 0 XYMODE C! ;
: GRID$ 0 XYPOS ! 0 XYMODE C! ;
( ----- 410 )
PS/2 keyboard subsystem

5
cvm/forth.fs
View File

@ -1,6 +1,7 @@
: COLS 80 ; : LINES 32 ;
: CURSOR! ( pos -- ) COLS /MOD 6 PC! ( y ) 5 PC! ( x ) ;
: CELL! ( c pos -- ) CURSOR! 0 PC! ;
: CURSOR! ( new old -- )
DROP COLS /MOD 6 PC! ( y ) 5 PC! ( x ) ;
: CELL! ( c pos -- ) 0 CURSOR! 0 PC! ;
: NEWLN ( ln -- ) DROP 0xa 0 PC! ;
SYSVARS 0x70 + CONSTANT GRID_MEM

10
doc/protocol.txt
View File

@ -42,13 +42,13 @@ previously enabled one.
A grid is a device that shows as a grid of ASCII characters and
allows random access to it.
COLS -- n Number of columns in the device
LINES -- n Number of lines in the device
CELL! c pos -- Set character at pos
COLS -- n Number of columns in the device
LINES -- n Number of lines in the device
CELL! c pos -- Set character at pos
Optional:
NEWLN ln -- "Enter" line ln
CURSOR! pos -- Set cursor's position
NEWLN ln -- "Enter" line ln
CURSOR! new old -- Move cursor from old pos to new pos
"pos" is a simple number (y * cols) + x. For example, if we
have 40 columns per line, the position (x, y) (12, 10) is 412.