What is BS-X Project ?
BS-X Project is about to revive the only official SNES Add-on, the Broadcast Satellaview.

In other words, i'm trying to do a fake signal on it (via hacks).

It's also about documenting things about BS-X.

I've discovered many things, with some that Byuu actually knew (32M Data Pack anyone ?).
And also, i've made a BS-X SRAM Checksum Fixer, AND the first homebrew for BS-X.

Now, my new discoveries :

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Something got me into my eye, i don't know what, but it gets more interesting...

80c30e lda $218a     [80218a] A:fe00 X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIZC V:237 H:1046 80c311 sta $143d     [80143d] A:fe00 X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIZC V:237 H:1076 80c314 beq $c34f     [80c34f] A:fe00 X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIZC V:237 H:1108

From the Trace Log, while trying to get a signal.
I tried to change the loaded value to #$FF, it's the same thing.
But #$7F...

80c30e lda #$7f               A:0100 X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIZC V:239 H: 648 80c310 nop                    A:017f X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 664 80c311 sta $143d     [80143d] A:017f X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 678 80c314 beq $c34f     [80c34f] A:017f X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 710 80c316 bmi $c350     [80c350] A:017f X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 726 80c318 cmp #$14               A:017f X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 742 80c31a bcc $c31e     [80c31e] A:017f X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 758 80c31c lda #$14               A:017f X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 774 80c31e sta $143d     [80143d] A:0114 X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 790 80c321 sta $47       [000047] A:0114 X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 822 80c323 stz $48       [000048] A:0114 X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 846 80c325 stz $143c     [80143c] A:0114 X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 870 80c328 ldx #$0000             A:0114 X:0006 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 902 80c32b lda $218b     [80218b] A:0114 X:0000 Y:0000 S:1e78 D:0000 DB:80 nvMxdIZC V:239 H: 926 80c32e sta $7e9a20,x [7e9a20] A:0121 X:0000 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 956 80c332 inx                    A:0121 X:0000 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H: 996 80c333 cpx $47       [000047] A:0121 X:0001 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzC V:239 H:1010 80c335 bne $c32b     [80c32b] A:0121 X:0001 Y:0000 S:1e78 D:0000 DB:80 NvMxdIzc V:239 H:1042 80c32b lda $218b     [80218b] A:0121 X:0001 Y:0000 S:1e78 D:0000 DB:80 NvMxdIzc V:239 H:1064 80c32e sta $7e9a20,x [7e9a21] A:0121 X:0001 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzc V:239 H:1094 80c332 inx                    A:0121 X:0001 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzc V:239 H:1134 80c333 cpx $47       [000047] A:0121 X:0002 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzc V:239 H:1148 80c335 bne $c32b     [80c32b] A:0121 X:0002 Y:0000 S:1e78 D:0000 DB:80 NvMxdIzc V:239 H:1180 80c32b lda $218b     [80218b] A:0121 X:0002 Y:0000 S:1e78 D:0000 DB:80 NvMxdIzc V:239 H:1202 80c32e sta $7e9a20,x [7e9a22] A:0121 X:0002 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzc V:239 H:1232 80c332 inx                    A:0121 X:0002 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzc V:239 H:1272 80c333 cpx $47       [000047] A:0121 X:0003 Y:0000 S:1e78 D:0000 DB:80 nvMxdIzc V:239 H:1286 80c335 bne $c32b     [80c32b] A:0121 X:0003 Y:0000 S:1e78 D:0000 DB:80 NvMxdIzc V:239 H:1318 [EDIT : Repeats, and also do the same kind of thing, with $218C]

It takes the value from a BS-X Register and WRITES IT TO THE WRAM ? !
It might get interesting... Stay tuned...

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My thoughts about BS-X Registers :
$218A - Number of byte blocks (Max = $14)
$218B - Number of bytes in a block
$218C - Data ?

I think we're about to find how the BS-X Downloads Data.

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I also found out that $218D is very important, because if i change something to a certain value, BS-X searches for a signal nonstop (in other words, no "No Signal" Message).

Maybe soon, i'll get a fake signal working, and getting access to things we couldn't access before...

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My Website on Neocities

The website got an update.
Also :
I made the BS-X Download some data.
Now, the thing we need, is to know how the data should be.

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My Website on Neocities