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ti84: WIP

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This commit is contained in:
Virgil Dupras 2020-05-08 06:50:34 -04:00
parent 24e588019b
commit 114e753b64
6 changed files with 69 additions and 40 deletions
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17
blk/555
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@ -1,16 +1 @@
( Required config: TI_MEM ) 1 3 LOADR+
: TI_MEM+ [ TI_MEM LITN ] + ;
: LCD_PORT_CMD 0x10 ;
: LCD_PORT_DATA 0x11 ;
: FNT_WIDTH 3 ;
: FNT_HEIGHT 5 ;
( Current Y position on the LCD, that is, where we're going to
spit our next glyph. )
: LCD_CURY 0 TI_MEM+ ;
: LCD_CURX 1 TI_MEM+ ;
( two pixel buffers that are 8 pixels wide (1b) by FNT_HEIGHT
pixels high. This is where we compose our resulting pixels
blocks when spitting a glyph. )
: LCD_BUF 2 TI_MEM+ ;
1 2 LOADR+

25
blk/556
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: _wait ( Wait until the lcd is ready to receive a command ) ( Required config: TI_MEM )
( When 7th bit is cleared, we can send a new command ) : TI_MEM+ [ TI_MEM LITN ] @ + ;
BEGIN LCD_PORT_CMD PC@ 0x80 AND NOT UNTIL ; : LCD_PORT_CMD 0x10 ;
: _cmd LCD_PORT_CMD PC! _wait ; : LCD_PORT_DATA 0x11 ;
: _data! LCD_PORT_DATA PC! _wait ; : FNTW 3 ;
: _data@ LCD_PORT_DATA PC@ _wait ; : FNTH 5 ;
: LCDOFF 0x02 ( CMD_DISABLE ) _cmd ; ( Current Y position on the LCD, that is, where we're going to
: _col! ( col -- ) spit our next glyph. )
0x20 ( CMD_COL ) + _cmd ; : LCD_CURY 0 TI_MEM+ ;
: _row! ( row -- ) : LCD_CURX 1 TI_MEM+ ;
0x80 ( CMD_ROW ) + _cmd ; ( two pixel buffers that are 8 pixels wide (1b) by FNT_HEIGHT
pixels high. This is where we compose our resulting pixels
blocks when spitting a glyph. )
: LCD_BUF 2 TI_MEM+ ;

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( Load a "glyph line" from buffer, left part being in MSB and
right part being in LSB. ) : _wait ( Wait until the lcd is ready to receive a command )
: _gl@ ( When 7th bit is cleared, we can send a new command )
BEGIN LCD_PORT_CMD PC@ 0x80 AND NOT UNTIL ;
: _cmd LCD_PORT_CMD PC! _wait ;
: _data! LCD_PORT_DATA PC! _wait ;
: _data@ LCD_PORT_DATA PC@ _wait ;
: LCDOFF 0x02 ( CMD_DISABLE ) _cmd ;
: _col! ( col -- )
0x20 ( CMD_COL ) + _cmd ;
: _row! ( row -- )
0x80 ( CMD_ROW ) + _cmd ;
: LCD$ H@ TI_MEM ! FNTH 2 * 2+ ALLOT ;

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: _glyph> ( a -- ) : _glyph> ( a -- )
LCD_CURY C@ _row! LCD_CURX C@ 8 /MOD _col! ( a coff ) LCD_CURY C@ _row! LCD_CURX C@ 8 /MOD _col! ( a coff )
0x05 ( XINC ) _cmd _data@ DROP 0x05 ( XINC ) _cmd _data@ DROP SWAP
FNT_HEIGHT 0 DO LOOP FNTH 0 DO ( coff a )
C@+ 2 PICK 8 -^ LSHIFT
_data@ 8 LSHIFT OR
LCD_BUF I + 2DUP FNTH + C!
SWAP 8 RSHIFT DUP 42 PC! SWAP C!
LOOP 2DROP
LCD_CURY C@ _row!
FNTH 0 DO LCD_BUF I + C@ _data! LOOP
LCD_CURY C@ _row! LCD_CURX C@ 8 / 1+ _col!
FNTH 0 DO LCD_BUF FNTH + I + C@ _data! LOOP
LCD_CURX C@ FNTW + 1+
DUP [ 96 FNTW - LITN ] > IF DROP 0 THEN
LCD_CURX C! ;

12
recipes/ti84/Makefile
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@ -1,15 +1,15 @@
TARGET = os.bin TARGET = stage1.bin
BASEDIR = ../.. BASEDIR = ../..
ZASM = $(BASEDIR)/emul/zasm/zasm FDIR = $(BASEDIR)/forth
KERNEL = $(BASEDIR)/kernel EDIR = $(BASEDIR)/emul
APPS = $(BASEDIR)/apps STAGE2 = $(EDIR)/stage2
EMUL = $(BASEDIR)/emul/hw/ti/ti84 EMUL = $(BASEDIR)/emul/hw/ti/ti84
MKTIUPGRADE = mktiupgrade MKTIUPGRADE = mktiupgrade
.PHONY: all .PHONY: all
all: $(TARGET) all: $(TARGET)
$(TARGET): glue.asm $(TARGET): xcomp.fs $(STAGE2)
$(ZASM) $(KERNEL) $(APPS) < glue.asm > $@ cat xcomp.fs | $(STAGE2) > $@
$(EMUL): $(EMUL):
$(MAKE) -C ${@:%/ti84=%} $(MAKE) -C ${@:%/ti84=%}

20
recipes/ti84/xcomp.fs Normal file
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0x8000 CONSTANT RAMSTART
0xb000 CONSTANT RS_ADDR
RAMSTART 0x70 + CONSTANT TI_MEM
212 LOAD ( z80 assembler )
262 LOAD ( xcomp )
: CODE XCODE ;
: IMMEDIATE XIMM ;
: (entry) (xentry) ;
: : [ ' X: , ] ;
CURRENT @ XCURRENT !
282 LOAD ( boot.z80 )
393 LOAD ( icore )
(entry) _
( Update LATEST )
PC ORG @ 8 + !
," 42 42 PC! BYE "
ORG @ 256 /MOD 2 PC! 2 PC!
H@ 256 /MOD 2 PC! 2 PC!