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Added support for SNES autodetection of 256 Kb SRAM in v2proto_hirom

This commit is contained in:
Joel Smith 2019-07-09 22:36:21 -07:00
parent e9f47ec5d0
commit 4f56ea85a6
1 changed files with 23 additions and 21 deletions
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44
host/scripts/snes/v2proto_hirom.lua
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@ -64,6 +64,7 @@ local ram_size_tbl = {
[0x01] = "16 kilobits", [0x01] = "16 kilobits",
[0x02] = "32 kilobits", [0x02] = "32 kilobits",
[0x03] = "64 kilobits", [0x03] = "64 kilobits",
[0x05] = "256 kilobits"
} }
-- Translates ram size in header to KBytes. -- Translates ram size in header to KBytes.
@ -72,6 +73,7 @@ local ram_size_kb_tbl = {
[0x01] = 2, [0x01] = 2,
[0x02] = 4, [0x02] = 4,
[0x03] = 8, [0x03] = 8,
[0x05] = 32
} }
local destination_code = { local destination_code = {
@ -288,7 +290,7 @@ end
function print_header(internal_header) function print_header(internal_header)
local map_mode_str = lorom_name local map_mode_str = lorom_name
if (internal_header["map_mode"] & 1) == 1 then map_mode_str = hirom_name end if (internal_header["map_mode"] & 1) == 1 then map_mode_str = hirom_name end
-- For each field, default to showing hex value so program doesn't crash if a value is unexpected. -- For each field, default to showing hex value so program doesn't crash if a value is unexpected.
local rom_type_str = "UNKNOWN - " .. hexfmt(internal_header["rom_type"]) local rom_type_str = "UNKNOWN - " .. hexfmt(internal_header["rom_type"])
if hardware_type[internal_header["rom_type"]] then rom_type_str = hardware_type[internal_header["rom_type"]] end if hardware_type[internal_header["rom_type"]] then rom_type_str = hardware_type[internal_header["rom_type"]] end
@ -308,7 +310,7 @@ function print_header(internal_header)
if developer_code[internal_header["developer_code"]] then if developer_code[internal_header["developer_code"]] then
developer_code_str = developer_code[internal_header["developer_code"]] developer_code_str = developer_code[internal_header["developer_code"]]
end end
print("Rom Title:\t\t" .. internal_header["rom_name"]) print("Rom Title:\t\t" .. internal_header["rom_name"])
print("Map Mode:\t\t" .. map_mode_str .. " - " .. hexfmt(internal_header["map_mode"])) print("Map Mode:\t\t" .. map_mode_str .. " - " .. hexfmt(internal_header["map_mode"]))
print("Hardware Type:\t\t" .. rom_type_str) print("Hardware Type:\t\t" .. rom_type_str)
@ -338,7 +340,7 @@ function get_header(map_adjust)
local addr_destination_code = 0xFFD9 - map_adjust -- 1 byte local addr_destination_code = 0xFFD9 - map_adjust -- 1 byte
local addr_developer_code = 0xFFDA - map_adjust -- 1 byte (This is actually manufacturer ID) local addr_developer_code = 0xFFDA - map_adjust -- 1 byte (This is actually manufacturer ID)
local addr_version = 0xFFDB - map_adjust -- 1 byte local addr_version = 0xFFDB - map_adjust -- 1 byte
local addr_compliment_check = 0xFFDC - map_adjust -- 2 bytes local addr_compliment_check = 0xFFDC - map_adjust -- 2 bytes
local addr_checksum = 0xFFDD - map_adjust -- 2 bytes local addr_checksum = 0xFFDD - map_adjust -- 2 bytes
local internal_header = { local internal_header = {
@ -374,7 +376,7 @@ function isvalidheader(internal_header)
return valid_rom_type and valid_rom_size and valid_sram_size and valid_destination_code return valid_rom_type and valid_rom_size and valid_sram_size and valid_destination_code
end end
function test() function test()
local hirom_header = get_header(0x0000) local hirom_header = get_header(0x0000)
local lorom_header = get_header(0x8000) local lorom_header = get_header(0x8000)
local internal_header = nil local internal_header = nil
@ -396,7 +398,7 @@ end
-- local functions -- local functions
-- Desc: attempt to read flash rom ID -- Desc: attempt to read flash rom ID
-- Pre: snes_init() been called to setup i/o -- Pre: snes_init() been called to setup i/o
-- Post:Address left on bus memories disabled -- Post:Address left on bus memories disabled
-- Rtn: true if proper flash ID found -- Rtn: true if proper flash ID found
@ -650,7 +652,7 @@ local function flash_rom(file, rom_size_KB, mapping, debug)
--program the entire bank's worth of data --program the entire bank's worth of data
--[[ This version of the code programs a single byte at a time but doesn't require --[[ This version of the code programs a single byte at a time but doesn't require
-- board specific functions in the firmware -- board specific functions in the firmware
print("This is slow as molasses, but gets the job done") print("This is slow as molasses, but gets the job done")
byte_num = 0 --current byte within the bank byte_num = 0 --current byte within the bank
@ -703,7 +705,7 @@ local function wr_ram(file, first_bank, ram_size_KB, mapping, debug)
--last of 512KB --last of 512KB
-- dict.snes("SNES_SET_BANK", 0x0F) wr_flash_byte(0x8000, 0xF5, true) wr_flash_byte(0xFFFF, 0xFA, true) -- dict.snes("SNES_SET_BANK", 0x0F) wr_flash_byte(0x8000, 0xF5, true) wr_flash_byte(0xFFFF, 0xFA, true)
local base_addr local base_addr
local bank_size local bank_size
local buff_size = 1 --number of bytes to write at a time local buff_size = 1 --number of bytes to write at a time
local cur_bank = 0 local cur_bank = 0
@ -750,7 +752,7 @@ local function wr_ram(file, first_bank, ram_size_KB, mapping, debug)
--program the entire bank's worth of data --program the entire bank's worth of data
---[[ This version of the code programs a single byte at a time but doesn't require ---[[ This version of the code programs a single byte at a time but doesn't require
-- board specific functions in the firmware -- board specific functions in the firmware
print("This is slow as molasses, but gets the job done") print("This is slow as molasses, but gets the job done")
byte_num = 0 --current byte within the bank byte_num = 0 --current byte within the bank
@ -794,18 +796,18 @@ end
--Cart should be in reset state upon calling this function --Cart should be in reset state upon calling this function
--this function processes all user requests for this specific board/mapper --this function processes all user requests for this specific board/mapper
local function process(process_opts, console_opts) local function process(process_opts, console_opts)
local rv = nil local rv = nil
local file local file
--initialize device i/o for SNES --initialize device i/o for SNES
dict.io("IO_RESET") dict.io("IO_RESET")
dict.io("SNES_INIT") dict.io("SNES_INIT")
local internal_header = nil local internal_header = nil
-- Use specified mapper if provided, otherwise autodetect. -- Use specified mapper if provided, otherwise autodetect.
local snes_mapping = console_opts["mapper"] local snes_mapping = console_opts["mapper"]
if (snes_mapping == lorom_name) then if (snes_mapping == lorom_name) then
@ -825,12 +827,12 @@ local function process(process_opts, console_opts)
-- Use specified ram size if provided, otherwise autodetect. -- Use specified ram size if provided, otherwise autodetect.
local ram_size = console_opts["wram_size_kb"] local ram_size = console_opts["wram_size_kb"]
-- Use specified rom size if provided, otherwise autodetect. -- Use specified rom size if provided, otherwise autodetect.
local rom_size = console_opts["rom_size_kbyte"] local rom_size = console_opts["rom_size_kbyte"]
-- TODO: Put this in a function. -- TODO: Put this in a function.
-- SNES memory map banking -- SNES memory map banking
@ -839,8 +841,8 @@ local function process(process_opts, console_opts)
-- A23 splits the map in half -- A23 splits the map in half
-- A22 splits it in quarters (between what's typically low half and high half) -- A22 splits it in quarters (between what's typically low half and high half)
-- b 7 6 5 4 : 3 2 1 0 -- b 7 6 5 4 : 3 2 1 0
-- A23 22 21 20 : 19 18 17 16 -- A23 22 21 20 : 19 18 17 16
local rombank --first bank of rom byte that contains A23-16 local rombank --first bank of rom byte that contains A23-16
local rambank --first bank of ram local rambank --first bank of ram
@ -852,8 +854,8 @@ local function process(process_opts, console_opts)
print_header(internal_header) print_header(internal_header)
-- Autodetect any missing parameters. -- Autodetect any missing parameters.
if isempty(snes_mapping) then if isempty(snes_mapping) then
snes_mapping = internal_header["mapping"] snes_mapping = internal_header["mapping"]
print("Mapping not provided, " .. snes_mapping .. " detected.") print("Mapping not provided, " .. snes_mapping .. " detected.")
if (snes_mapping == lorom_name) then if (snes_mapping == lorom_name) then
-- LOROM typically sees the upper half (A15=1) of the first address 0b0000:1000_0000 -- LOROM typically sees the upper half (A15=1) of the first address 0b0000:1000_0000
@ -865,7 +867,7 @@ local function process(process_opts, console_opts)
rombank = 0xC0 rombank = 0xC0
--rombank = 0x40 --second HiROM bank (slow) --rombank = 0x40 --second HiROM bank (slow)
rambank = 0x30 rambank = 0x30
end end
end end
if ram_size == 0 then if ram_size == 0 then
@ -887,7 +889,7 @@ local function process(process_opts, console_opts)
end end
--dump the ram to file --dump the ram to file
if dumpram then if dumpram then
print("\nDumping SAVE RAM...") print("\nDumping SAVE RAM...")
@ -950,7 +952,7 @@ local function process(process_opts, console_opts)
--open file --open file
file = assert(io.open(flashfile, "rb")) file = assert(io.open(flashfile, "rb"))
--determine if auto-doubling, deinterleaving, etc, --determine if auto-doubling, deinterleaving, etc,
--needs done to make board compatible with rom --needs done to make board compatible with rom
--flash cart --flash cart