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2f1e635b9d
Pushed all words directly interfacing with ports and memory offsets to low level layers. This saves us the need for keeping those variables in runtime memory.
17 lines
574 B
Plaintext
17 lines
574 B
Plaintext
TI-84+ LCD driver
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Implement (emit) on TI-84+ (for now)'s LCD screen. The low
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level part are blocks 555-557 and high level ones are 558-560.
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The screen is 96x64 pixels. The 64 rows are addressed directly
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with CMD_ROW but columns are addressed in chunks of 6 or 8 bits
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(there are two modes).
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In 6-bit mode, there are 16 visible columns. In 8-bit mode,
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there are 12.
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Note that "X-increment" and "Y-increment" work in the opposite
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way than what most people expect. Y moves left and right, X
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moves up and down.
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(cont.)
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