Interesting discussion above, but all I can tell you so far is that this attachment definitely works on my OmegaFor good measure - here are the disassemblies of each of HVCA's flashcart reboot functions:
Each of these routines has a consistent end section:
Code:mov r0, #0 mov r1, #0x4000000 strh r0, [r1, #-6] @ store half-word 0x0000 at address 0x3fffffa mov r0, #0xfc @ move word 0x000000fc into register r0 svc #0x10000 @ supervisor call 0x10000 svc #0 @ supervisor call 0x00000
More known-good EZ-Flash reset code here:
https://github.com/EvilJagaGenius/jagoombacolor/blob/master/src/visoly.s
It also uses supervisor call 0x10000 followed by supervisor call 0x00000.
Post automatically merged:
Ok, so here is my tweaking of the flash_ez1.sub disassembled source to create flash_ez4.sub:
Code:# HVCA exit code for EZ-Flash IV / 3in1 / Omega # by patters in 2023 # # https://gbatemp.net/threads/multi-platform-builder-scripts-for-gba-emulators.611219/post-10138443 add sb, pc, #0x48 @ sb = start of .BYTE definitions ldm sb, {r1, r2, r3, r4} mov r5, #0xd200 mov r6, #0x1500 strh r5, [r1] @ 0x9fe0000 = 0xd200 strh r6, [r2] @ 0x8000000 = 0x1500 strh r5, [r3] @ 0x8020000 = 0xd200 strh r6, [r4] @ 0x8040000 = 0x1500 mov r0, #0x8000 ldr r1, [pc, #0x34] @ 5th .BYTE strh r0, [r1] @ 0x9880000 = 0x8000 mov r0, #0x1500 ldr r1, [pc, #0x2c] @ 6th .BYTE strh r0, [r1] @ 0x9fc0000 = 0x1500 mov r0, #0 mov r1, #0x4000000 @ 0x9fc0000 = 0x1500 strh r0, [r1, #-6] @ 0x3fffffa = 0x0000 mov r0, #0xfc svc #0x10000 svc #0 .BYTE 0x00, 0x00, 0xfe, 0x09 .BYTE 0x00, 0x00, 0x00, 0x08 .BYTE 0x00, 0x00, 0x02, 0x08 .BYTE 0x00, 0x00, 0x04, 0x08 .BYTE 0x00, 0x00, 0x88, 0x09 .BYTE 0x00, 0x00, 0xfc, 0x09
...which assembles into the 104 byte file which is attached to this post.
And it actually works on my EZ-Flash IV! I'm very pleased with that.
I think it ought to work on EZ-Flash 3in1 / Omega / Omega DE too. Please try it and let me know. You'll need to add the exit sub using my build script's -x command line option.
The final point of confusion is that if you select <EXIT Emulation> from the menu it only resets the emulator. You need to Hold L+R whilst in the menu to actually exit back to the flashcart menu (keep holding while the screen turns black). The clue to this was in the rather intriguing controls schematic in the HVCA readme.
Take note - all of this was made possible by Open Source. I know next to nothing about ARM ASM, and I'm not a software developer. If I can do this then so can you, with curiosity, logic, and patience.
Many thanks!
Just ran a quick test. It works fine.
Edit: I did another test and it turns out I was right about the truncation. It seems only values that are a multiple of 512 are used by SetRompage. Evidentally, their documentation was wrong.
Last edited by TechieSaru,
I did a bit of reverse engineering and added a builder script for ZXAdvance. It can extract the emulator gba binary from the exe file and it will read ZXA.INI for control schemes.
https://github.com/patters-match/gba-emu-compilation-builders/blob/main/zxadvance_compile.py
https://github.com/patters-match/gba-emu-compilation-builders/blob/main/zxadvance_compile.py
Similar threads
-
Xdqwerty
what are you looking at? -
AncientBoi
-
BigOnYa
-
@
Xdqwerty:
@SylverReZ I read that non-binary people identify as a blend of male and female. The point is i think i'm a blend of those and thus non binary
-
@
SylverReZ:
@Xdqwerty, Non-binary people are those who don't identify themselves exclusively as male or female. -
-
-
-
-
-
@
Xdqwerty:
@SylverReZ, and thus that would make me non binary since i feel like a blend of both male and female+1
-
@
AncientBoi:
@Xdqwerty only time will tell, what/whom you are. At 14, its a bit early to "Define" yourself.+3
-
@
Psionic Roshambo:
I only recently have learned who I am and how much I am capable of and I'm 50 lol+3 -
-
@
Psionic Roshambo:
I wish I could sum it up for children to understand but it truly takes living a lifetime of learning+2
-
-
-
-
-
-
@
BigOnYa:
My wifey tells me all the time "You need to grow the fuck up." Which I don't understand, cause I'm full grown already.+2
-
-
-
-
@
BigOnYa:
@AncientBoi I imagine it don't make the fart sound anymore, probably sounds more like letting go of a balloon you just blew up.+3
-
-
-
[homo, queer, fag, coksuqr, etc......]
in your pants] Liar 