collapseos/arch/z80/ti84/blk/605
Virgil Dupras c7d8de25b2 ti84: use Grid subsystem
Also, rename CLRLN to NEWLN and make it clear that it's only called
on entering a new line. This way, we can set Z offset in there for
the TI-84+ LCD driver.
2020-11-10 20:30:37 -05:00

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( Required config: LCD_MEM )
: _mem+ [ LCD_MEM LITN ] @ + ;
: FNTW 3 ; : FNTH 5 ;
: COLS 96 FNTW 1+ / ; : LINES 64 FNTH 1+ / ;
( Wait until the lcd is ready to receive a command. It's a bit
weird to implement a waiting routine in asm, but the forth
version is a bit heavy and we don't want to wait longer than
we have to. )
CODE _wait
BEGIN,
0x10 ( CMD ) INAi,
RLA, ( When 7th bit is clr, we can send a new cmd )
JRC, AGAIN,
;CODE