I made a commit earlier this week but messed things up by not pulling
from the master and things weren't updated... Here's the notes from
that commit:
Author: Paul XPS <paul@infiniteneslives.com>
Date: Tue Nov 6 22:45:52 2018 -0600
Large commit biggest feature add is NES MMC3 support including Save RAM
(aka WRAM/PRGRAM) support including dumping and writing save files.
The MMC3 script & method of dumping/flashing is the most forward
thinking script/firmware so far. Finally starting to form a clear
vision of how I want to handle flashing/dumping variations with mappers.
Biggest thing is having the host handle the mapper init & banking
control. In the view of the firmware, it's only responsible for knowing
how to flash a bank. And dumping is even more generic with the host
just telling what address range to read. Things will get more complex
with support of mappers with bus conflicts. But ready to start
converting these old hacked methods to be more like the MMC3 means.
Have some early support for dumping gameboy using the snes script as the
pinouts are nearly identical. Along with testing of toggling between 3v
GBA and 5v DMG.
Have some early support for INLretro NES only version which uses a
smaller mcu because it doesn't need to support large 16bit carts. Still
have to get this completed.
Added support for CNROM, but I'm not sure if it's actually working. Going
to restart with NROM and start updating the currently supported
mappers to be more like MMC3.
But this also includes some new updates from the second half of the week:
Started updating existing NES scripts to use new MMC3 methodology. Got
NROM, CNROM, BNROM, & Color Dreams working. On the host side only
needed to add nes.c functions for specific flash algos. Able to delete
significant amounts of mapper specific code from flash.c
Got some basic SNES script support with new methodology for Catskull
elect 5v PLCC SNES LoROM board. And INL SNES HI/LO-ROM 3v board as
well. These don't yet use buffer writes, just single byte writes.
Also having issues with Mirroring test/sensing again. Driving me crazy,
but don't really care about it at the moment and not sure what's wrong..
So just committing that broken for now. Looking to remove this
functionality from the firmware side as the host should be controlling
most of this.
Looking to add SNES RAM & buffered writes. Also need to test some of
the HIROM code as I just added it in there while I did the LOROM stuff..
boards for SF2 builds. Not necessarily the most clean, but it was
stable and worked well.
Need to get swim comms working on other board designs.
Need to come up with better swim activation with more exact timing.
Still need to implement swim comms on avr, hopefully that doesn't prove
to be too much of a PITA... Not looking forward to that. Can probably
only handle low speed, and faking pullup may not work as well without
time on it's side @ 16Mhz...
Need to get stm32 up and working, currently the usbFunctionWrite causes
device descriptor request to fail on stm32 devices. So need to do some
debugging there which I was expecting..
enumeration with host, no vendor/class requests handled.
move avr builds into avr_release dir
move original source files into source/old for future reference.
avr-size avr_kazzo.elf
text data bss dec hex filename
1496 2 43 1541 605 avr_kazzo.elf
Need to verify page programmed successfully as it currently just continues even if unable to
flash proper data. Need to make write page utilize variables for bank address based on mapper
and/or memory as currently doesn't flash CHR-ROM due to $5555 $2AAA being above address space
of CHR-ROM
buffer opcode updates to transfer payloads
including stuffing two bytes of write transfers in setup packet.
Calling specific buffers with miscdata or opcode.
new dump and flash modules for firmware.
new buffer function update_buffers called during main to monitor and
manage buffer objects when not being loaded/unloaded from USB.
Paul XPS