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Recipes contain bits and pieces of hardware-related knowledge, but these bits feel sparse. I've been wanting to consolidate hardware- related documentation for a while, but always fell at odds with the recipes organisation. We don't have recipes anymore, just a /doc/hw section that contains hardware-related documentation which often translate to precise instructions to run Collapse OS on a specific machine. With this new organisation, I hope to end up with a better, more solid documentation.
14 lines
416 B
Plaintext
14 lines
416 B
Plaintext
( Required config: LCD_MEM )
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: _mem+ [ LCD_MEM LITN ] @ + ;
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: FNTW 3 ; : FNTH 5 ;
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( Wait until the lcd is ready to receive a command. It's a bit
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weird to implement a waiting routine in asm, but the forth
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version is a bit heavy and we don't want to wait longer than
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we have to. )
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CODE _wait
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BEGIN,
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0x10 ( CMD ) INAi,
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RLA, ( When 7th bit is clr, we can send a new cmd )
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JRC, AGAIN,
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;CODE
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