The reason for this functionality is that some flashcarts *cough* EZ Flash Omega (DE) *cough* can't be hotswapped IN. When you try this, they will trigger a reset of the gba.
This is only relevant for the use case in which you first launch the rom from a flashcart in the first place.
I suppose this can only be relevant for flashcarts which offer "single cart mode". (mode B for EZ Flash Omega).
So, I added an option to upload the rom to another GBA from the "game_load_error" screen if you press the SELECT button.
So, with this change, you could
- launch Poke Transporter GB on GBA 1 from a flashcart.
- eject the flashcart on GBA 1
- make sure the EZ Flash Omega or other "single cart mode/mode B" capable flashcart is set to this mode.
- insert this flashcart into GBA 2
- connect GBA link cable (narrow plug on GBA 1, wide plug on GBA 2)
- Power on GBA 2 and press both SELECT and START while the gameboy logo is still shown
- On GBA 1, in the "game_load_error" screen, press SELECT
- On GBA 1, now press A -> The multiboot upload will now start
- Once finished, GBA 2 will now be running Poke Transporter GB as well
- GBA 2 will recognize the gen III save!
- You can now disconnect the GBA link cable and turn off GBA 1. (you may use it later for the GBC game alongside a GBC link cable to start the actual PKMN transfer)
I mean, this branch is still only a proof of concept. Not intended for merging directly. But adding it to the main README also makes
this addition show up in the branches' github page.
This greatly decreases the ROM size, from 245 KB to 198 KB with no visual
changes (that I am aware of)
Changes:
- Enable compression on every graphic but the Pokemon sprites (which are
too large for the GBA to decompress).
- Change grit from emitting .s files to .c files so GCC can strip unused
palettes and maps
- Fix the empty tiles
- Trim down the font to skip 00-1F and 80-FF which were all zeroes
- needs a slight workaround because the Pokemon name display was printing
an invisible FF byte
- Switch memcpy to tonccpy which is vram safe
- Limit palette sizes.
Signed-off-by: easyaspi314 <6258309+easyaspi314@users.noreply.github.com>
