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21 lines
935 B
Markdown
21 lines
935 B
Markdown
1 year ago
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# msp430 implementation
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This is the MSP430 port of Alee Forth. It produces a binary that enters a REPL made available on the UART peripheral at 115200 baud. The specific target is MSP430G2553.
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## Building
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1. `make clean` (just in case)
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2. `make msp430-prep`: Builds `alee` for the host computer and uses it to create an `alee.dat` blob containing bytecode for `forth/core.fth` and `forth/msp430.fth`.
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3. `make msp430`: Produces `alee-msp430`, a standalone binary for the MSP430 with built-in core and msp430 word-sets.
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The final binary is < 11 kB and provides 150 bytes for user dictionary in RAM (assuming 512 bytes of total RAM).
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## msp430.fth
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The msp430 word-set makes programming for the MSP430 easier:
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* All register names are defined (P1OUT, ADC10MEM, etc.).
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* `r!` and `r@` to write and read device memory (i.e. registers).
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* `rset`, `rclr`, `rtgl` work like `r!` but set, clear, or toggle the given value/mask instead.
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