75 lines
2.4 KiB
Lua
75 lines
2.4 KiB
Lua
-- Main application flow for interacting with cartridges via USB device.
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-- Refactored version that doesn't require commenting/uncommenting to change functionality.
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-- Helper function that checks if a string is empty or nil.
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local function isempty(s)
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return s == nil or s == ''
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end
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-- Wrapper for managing NES/Famicom operations.
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function nes_exec(mapper, dump_filename, flash_filename, verify_filename)
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local dict = require "scripts.app.dict"
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local nes = require "scripts.app.nes"
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-- Always test!
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local do_test = true
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-- If a dump filename was provided, dump data from cartridge to a file.
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local do_read = not isempty(dump_filename)
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-- If a flash filename was provided, write its contents to the cartridge.
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local do_erase = not isempty(flash_filename)
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-- If writing, always erase.
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local do_program = do_erase
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-- If a verify_filename was provided, dump data from cartridge after flash to a file.
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local do_verify = not isempty(verify_filename)
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-- TODO: Add other mappers.
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local mappers = {
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mmc1 = require "scripts.nes.mmc1",
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mmc3 = require "scripts.nes.mmc3",
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nrom = require "scripts.nes.nrom"
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}
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dict.io("IO_RESET")
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dict.io("NES_INIT")
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nes.detect_mapper_mirroring(true)
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m = mappers[mapper]
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if m == nil then
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print("UNSUPPORTED MAPPER")
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else
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-- Attempt requested operations with hardware!
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-- TODO: Do plumbing for interacting with RAM.
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m.process(do_test, do_read, do_erase, do_program, do_verify, dump_filename, flash_filename, verify_filename)
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end
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end
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-- Point of entry from C language half of program.
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function main()
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-- Globals passed in from C:
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-- console_name: string, name of console.
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-- mapper_name: string, name of mapper.
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-- dump_filename: string, filename used for writing dumped data.
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-- flash_filename: string, filename containing data to write cartridge.
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-- verify_filename: string, filename used for writing back data written to cartridge for verification.
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-- TODO: Add SNES support, as it appears to be currently usable?
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local consoles = {
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NES = nes_exec,
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}
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f = consoles[console_name]
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if f == nil then
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print("UNSUPPORTED CONSOLE")
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else
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f(mapper_name, dump_filename, flash_filename, verify_filename)
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end
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end
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-- Don't do this. Next iteration will call a function, not the whole script.
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main() |