176 lines
6.5 KiB
Lua
176 lines
6.5 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 operations for most consoles.
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function default_exec(process_opts, console_opts)
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-- Defensively filter out any console options that aren't standard.
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local default_opts = {
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rom_size_kbyte = console_opts["rom_size_kbyte"],
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wram_size_kb = console_opts["wram_size_kb"],
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}
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console_opts["console_process_script"].process(process_opts, default_opts)
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end
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-- Wrapper for managing original Gameboy operations.
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function gb_exec(process_opts, console_opts)
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-- Defensively filter out any console options that aren't standard.
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local gb_opts = {
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rom_size_kbyte = console_opts["rom_size_kbyte"],
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}
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local mappers = {
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romonly = require "scripts.gb.romonly",
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mbc1 = require "scripts.gb.mbc1",
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}
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m = mappers[console_opts["mapper"]]
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if m == nil then
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print("UNSUPPORTED MAPPER: ", console_opts["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(process_opts, console_opts)
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end
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end
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-- Wrapper for managing NES/Famicom operations.
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function nes_exec(process_opts, console_opts)
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local dict = require "scripts.app.dict"
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local nes = require "scripts.app.nes"
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-- Defensively filter out any console options that are irrelevant to NES support.
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-- This will matter more when software support exists for other consoles.
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local nes_opts = {
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wram_size_kb = console_opts["wram_size_kb"],
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prg_rom_size_kb = console_opts["prg_rom_size_kb"],
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chr_rom_size_kb = console_opts["chr_rom_size_kb"],
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mirror = nil -- Used by NROM mapper only, "H" or "V".
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}
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local mappers = {
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action53_tsop = require "scripts.nes.action53_tsop",
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action53 = require "scripts.nes.action53",
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bnrom = require "scripts.nes.bnrom",
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cdream = require "scripts.nes.cdream",
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cninja = require "scripts.nes.cninja",
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cnrom = require "scripts.nes.cnrom",
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dualport = require "scripts.nes.dualport",
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easynsf = require "scripts.nes.easyNSF",
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fme7 = require "scripts.nes.fme7",
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mapper30 = require "scripts.nes.mapper30",
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mmc1 = require "scripts.nes.mmc1",
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mmc3 = require "scripts.nes.mmc3",
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mmc4 = require "scripts.nes.mmc4",
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mmc5 = require "scripts.nes.mmc5",
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nrom = require "scripts.nes.nrom",
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unrom = require "scripts.nes.unrom"
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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[console_opts["mapper"]]
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if m == nil then
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print("UNSUPPORTED MAPPER: ", console_opts["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(process_opts, console_opts)
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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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-- ramdump_filename: string, filename used for writing dumped ram data.
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-- ramwrite_filename: string, filename containing data to write to ram on cartridge.
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-- nes_prg_rom_size_kb: int, size of cartridge PRG-ROM in kilobytes.
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-- nes_chr_rom_size_kb: int, size of cartridge CHR-ROM in kilobytes.
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-- nes_wram_size_kb: int, size of cartridge WRAM in kilobytes.
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-- rom_size_kbyte: int, size of cartridge ROM in kilobytes.
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-- TODO: This should probably be one level up.
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-- TODO: Ram probably needs a verify file as well?
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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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-- TODO: Check for erase + dump at same time, not permitted.
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local do_erase = not isempty(flash_filename)
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-- If writing, always erase.
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-- TODO: Check for program and dump at same time, not permitted.
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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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local do_dumpram = not isempty(ramdump_filename)
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local do_writeram = not isempty(ramwrite_filename)
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-- Pack main process state into table.
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local process_opts = {
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test = do_test,
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read = do_read,
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dump_filename = dump_filename,
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erase = do_erase,
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program = do_program,
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flash_filename = flash_filename,
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verify = do_verify,
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verify_filename = verify_filename,
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dumpram = do_dumpram,
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dumpram_filename = ramdump_filename,
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writeram = do_writeram,
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writeram_filename = ramwrite_filename,
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}
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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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dmg = gb_exec,
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gb = gb_exec, -- Support two names for gameboy
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gba = default_exec,
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genesis = default_exec,
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n64 = default_exec,
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nes = nes_exec,
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}
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local console_scripts = {
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n64 = require "scripts.n64.basic",
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nes = require "scripts.app.nes",
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gba = require "scripts.gba.basic",
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genesis = require "scripts.sega.genesis_v1"
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}
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local console_exec = consoles[console_name]
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local console_process_script = console_scripts[console_name]
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if console_exec == nil then
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print("UNSUPPORTED CONSOLE: ", console_name)
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else
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local console_opts = {
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wram_size_kb = nes_wram_size_kb,
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prg_rom_size_kb = nes_prg_rom_size_kb,
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chr_rom_size_kb = nes_chr_rom_size_kb,
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rom_size_kbyte = rom_size_kbyte,
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console_process_script = console_process_script,
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mapper = mapper_name,
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}
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console_exec(process_opts, console_opts)
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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()
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