Zorchenhimer
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INL-retro-progdump
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Have BNROM 512KB PRG-ROM working for dumping and flashing. 

Realizing much of my problems with discrete boards on original kazzos was
that I completely ignored the fact that most discretes are subject to bus
conflicts.  This makes writes to the mapper bank selecting uber flakey...
Created routine in bnrom.lua script to start flash operation by writing
the bank table to where Lizard puts it.  Need to write routine to find the
bank table in a provided rom for flashing.  And dumping needs to find the
bank table prior to making mapper writes and then use it for bank
switching!

Tested and working on AVR, stm adapter, and inl6
Lizard 512KB flash/dump:
AVR decrepit old firmware & app: 7.9KBps flash
AVR new firmware and app (this build) F:12.1KBps D:14.6KBps
STM adapter: F:31KBps D:114KBps
INL6: F:40KBps D:120KBps
This commit is contained in:
Paul Black ASUS win7 2018-02-15 14:34:52 -06:00
parent 9d35ad0c0f
commit c208924e45
4 changed files with 107 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
firmware/source/dump.c
View File

@ -9,6 +9,7 @@
uint8_t dump_buff( buffer *buff ) {
uint8_t addrH = buff->page_num; //A15:8 while accessing page
uint8_t bank;
//warn uint8_t addrX; //A23:16 while accessing page
//TODO use mapper to set mapper controlled address bits
@ -18,6 +19,13 @@ uint8_t dump_buff( buffer *buff ) {
switch ( buff->mem_type ) {
case PRGROM:
addrH |= 0x80; //$8000
if (buff->mapper == BxROM) {
bank = (buff->page_num)>>7;
//write bank value to bank table
//page_num shift by 6 bits A15 >> A8(0)
//Lizard bank table @ FF94
nes_cpu_wr( (0xFF94+bank), bank );
}
buff->cur_byte = nes_cpu_page_rd_poll( buff->data, addrH, buff->id,
//id contains MSb of page when <256B buffer
buff->last_idx, ~FALSE );

37
firmware/source/flash.c
View File

@ -39,10 +39,18 @@ uint8_t write_page( uint8_t bank, uint8_t addrH, buffer *buff, write_funcptr wr_
read = rd_func((addrH<<8)|n);
} while( read != rd_func((addrH<<8)|n) );
//TODO verify byte is value that was trying to be flashed
//move on to next byte
n++;
cur++;
//retry if write failed
//this helped but still seeing similar fails to dumps
if (read == buff->data[n]) {
n++;
cur++;
LED_IP_PU();
LED_LO();
} else {
LED_OP();
LED_HI();
}
}
@ -94,8 +102,17 @@ uint8_t write_page_chr( uint8_t bank, uint8_t addrH, buffer *buff, write_funcptr
} while( read != rd_func((addrH<<8)|n) );
//TODO verify byte is value that was trying to be flashed
//move on to next byte
n++;
cur++;
//n++;
//cur++;
if (read == buff->data[n]) {
n++;
cur++;
LED_IP_PU();
LED_LO();
} else {
LED_OP();
LED_HI();
}
}
@ -324,6 +341,7 @@ uint8_t write_page_snes( uint8_t bank, uint8_t addrH, buffer *buff, write_funcpt
uint8_t flash_buff( buffer *buff ) {
uint8_t addrH = buff->page_num; //A15:8 while accessing page
uint8_t bank;
//First need to initialize mapper register bits
//Perhaps this only needs to be done on first buffer though..?
@ -339,6 +357,13 @@ uint8_t flash_buff( buffer *buff ) {
//also use to get read function pointer
switch ( buff->mem_type ) {
case PRGROM: //$8000
if (buff->mapper == BxROM) {
//write bank value
//page_num shift by 7 bits A15 >> A8(0)
bank = buff->page_num >> 7;
//Lizard banktable location
nes_cpu_wr( (0xFF94+bank), bank );
}
write_page( 0, (0x80 | addrH), buff, discrete_exp0_prgrom_wr, nes_cpu_rd );
break;
case CHRROM: //$0000

8
host/scripts/inlretro.lua
View File

@ -21,8 +21,8 @@ function main ()
--cart/mapper specific scripts
local curcart = require "scripts.nes.nrom"
--local curcart = require "scripts.nes.bnrom"
--local curcart = require "scripts.nes.nrom"
local curcart = require "scripts.nes.bnrom"
local rv
-- rv = dict.pinport( "DATA_SET", 0xAA )
@ -131,7 +131,9 @@ function main ()
--set rom types and sizes
--perform desired operation
--CART and programmer should be in a RESET condition upon calling the specific script
curcart.process( true, true, true, true, "ignore/dump.bin", "ignore/ddug2.bin", "ignore/verifyout.bin")
--curcart.process( true, true, true, true, "ignore/dump.bin", "ignore/ddug2.bin", "ignore/verifyout.bin")
curcart.process( false, true, true, true, "ignore/dump.bin", "ignore/lizard_v1.bin", "ignore/verifyout.bin")
--curcart.process( true, false, false, false, "ignore/dump.bin", "ignore/lizard_v1.bin", "ignore/verifyout.bin")
--[[

68
host/scripts/nes/bnrom.lua
View File

@ -10,7 +10,59 @@ local flash = require "scripts.app.flash"
-- file constants
-- local functions
local function wr_flash_byte(addr, value, debug)
dict.nes("DISCRETE_EXP0_PRGROM_WR", 0x5555, 0xAA)
dict.nes("DISCRETE_EXP0_PRGROM_WR", 0x2AAA, 0x55)
dict.nes("DISCRETE_EXP0_PRGROM_WR", 0x5555, 0xA0)
dict.nes("DISCRETE_EXP0_PRGROM_WR", addr, value)
local rv = dict.nes("NES_CPU_RD", addr)
local i = 0
while ( rv ~= value ) do
rv = dict.nes("NES_CPU_RD", addr)
i = i + 1
end
if debug then print(i, "naks, done writing byte.") end
end
--base is the actual NES CPU address, not the rom offset (ie $FFF0, not $7FF0)
local function wr_bank_table(base, entries)
-- --first select the last bank as cartridge should be erased (all 0xFF)
-- --go ahead and write the value to where it's supposed to be incase rom isn't erased
-- dict.nes("NES_CPU_WR", base+entries-1, entries-1)
--
-- --write bank table to selected bank
-- while( i < entries) do
-- wr_flash_byte(base+i, i)
-- i = i+1;
-- end
-- --now we can use that bank table to jump to any other bank
--smarter solution is to simply count down so we can use just one loop
local cur_bank = entries - 1 --16 minus 1 is 15 = 0x0F
while( cur_bank >= 0 ) do
--select bank to write to (last bank first)
--use the bank table to make the switch
dict.nes("NES_CPU_WR", base+cur_bank, cur_bank)
--write bank table to selected bank
local i = 0
while( i < entries) do
wr_flash_byte(base+i, i)
i = i+1;
end
cur_bank = cur_bank-1
end
end
--Cart should be in reset state upon calling this function
--this function processes all user requests for this specific board/mapper
@ -28,9 +80,9 @@ local function process( read, erase, program, verify, dumpfile, flashfile, verif
if read then
file = assert(io.open(dumpfile, "wb"))
--TODO find bank table to avoid bus conflicts!
--dump cart into file
dump.dumptofile( file, 32, "BNROM", "PRGROM", true )
-- dump.dumptofile( file, 512, "BNROM", "PRGROM", true )
dump.dumptofile( file, 512, "BxROM", "PRGROM", true )
--close file
assert(file:close())
@ -40,7 +92,7 @@ local function process( read, erase, program, verify, dumpfile, flashfile, verif
--erase the cart
if erase then
print("erasing BNROM");
print("\nerasing BxROM");
print("erasing PRG-ROM");
dict.nes("DISCRETE_EXP0_PRGROM_WR", 0x5555, 0xAA)
@ -70,8 +122,14 @@ local function process( read, erase, program, verify, dumpfile, flashfile, verif
file = assert(io.open(flashfile, "rb"))
--determine if auto-doubling, deinterleaving, etc,
--needs done to make board compatible with rom
--find bank table in the rom
--write bank table to all banks of cartridge
--Lizard's bank table is at $FF94 so hard code that for now
wr_bank_table(0xFF94, 16)
--flash cart
flash.write_file( file, 32, "BNROM", "PRGROM", true )
flash.write_file( file, 512, "BxROM", "PRGROM", true )
--close file
assert(file:close())
@ -84,7 +142,7 @@ local function process( read, erase, program, verify, dumpfile, flashfile, verif
file = assert(io.open(verifyfile, "wb"))
--dump cart into file
dump.dumptofile( file, 32, "BNROM", "PRGROM", true )
dump.dumptofile( file, 512, "BxROM", "PRGROM", true )
--close file
assert(file:close())