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document EEPROMWrite a bit more

This commit is contained in:
Henny022p 2021-03-01 13:56:00 +01:00
parent 1810f771e5
commit 364edc85dc
1 changed files with 10 additions and 8 deletions
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18
src/code_080B1520.c
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@ -103,8 +103,8 @@ u16 EEPROMWrite1(u16 address, u16* data) {
// this is the furthest I could get
// 0x080B16AC
NONMATCH("asm/non_matching/code_080B1520/EEPROMWrite.inc", u16 EEPROMWrite(u16 unk_1, u16* unk_2, u8 unk_3)) {
u16 stack[0x52];
NONMATCH("asm/non_matching/code_080B1520/EEPROMWrite.inc", u16 EEPROMWrite(u16 address, u16* data, u8 unk_3)) {
u16 buffer[0x52]; // this is one too large?
vu16 stack_a4;
vu16 stack_a6;
vu16 stack_a8;
@ -115,22 +115,24 @@ NONMATCH("asm/non_matching/code_080B1520/EEPROMWrite.inc", u16 EEPROMWrite(u16 u
u8 i, j;
u16* ptr;
r1 = unk_1;
if (unk_1 >= gEEPROMConfig->size)
r1 = address;
if (address >= gEEPROMConfig->size)
return EEPROM_OUT_OF_RANGE;
ptr = stack + gEEPROMConfig->address_width + 0x42;
ptr = buffer + gEEPROMConfig->address_width + 0x42;
*ptr = 0;
ptr--;
// copy data into buffer
for (i = 0; i <= 3; i++) {
r2 = *unk_2;
unk_2++;
r2 = *data;
data++;
for (j = 0; j <= 0xf; j++) {
*ptr = r2;
ptr--;
r2 = r2 >> 1;
}
}
// copy address to buffer
for (i = 0; i < gEEPROMConfig->address_width; i++) {
*ptr = r1;
ptr--;
@ -139,7 +141,7 @@ NONMATCH("asm/non_matching/code_080B1520/EEPROMWrite.inc", u16 EEPROMWrite(u16 u
*ptr = 0;
ptr--;
*ptr = 1;
DMA3Transfer(stack, (u16*)0xd000000, gEEPROMConfig->address_width + 0x43);
DMA3Transfer(buffer, (u16*)0xd000000, gEEPROMConfig->address_width + 0x43);
stack_a4 = 0;
stack_a6 = REG_VCOUNT;
stack_ac = 0;