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SimoneN64
2024-09-05 20:58:31 +02:00
parent ba4fe56bb0
commit 876d4039e5
2 changed files with 102 additions and 109 deletions
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41
external/cic_nus_6105/n64_cic_nus_6105.cpp vendored
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@@ -90,29 +90,22 @@
#include "n64_cic_nus_6105.hpp" #include "n64_cic_nus_6105.hpp"
void n64_cic_nus_6105(char chl[], char rsp[], int len) void n64_cic_nus_6105(char chl[], char rsp[], int len) {
{ static char lut0[0x10] = {0x4, 0x7, 0xA, 0x7, 0xE, 0x5, 0xE, 0x1, 0xC, 0xF, 0x8, 0xF, 0x6, 0x3, 0x6, 0x9};
static char lut0[0x10] = { static char lut1[0x10] = {0x4, 0x1, 0xA, 0x7, 0xE, 0x5, 0xE, 0x1, 0xC, 0x9, 0x8, 0x5, 0x6, 0x3, 0xC, 0x9};
0x4, 0x7, 0xA, 0x7, 0xE, 0x5, 0xE, 0x1, char key, *lut;
0xC, 0xF, 0x8, 0xF, 0x6, 0x3, 0x6, 0x9 int i, sgn, mag, mod;
};
static char lut1[0x10] = {
0x4, 0x1, 0xA, 0x7, 0xE, 0x5, 0xE, 0x1,
0xC, 0x9, 0x8, 0x5, 0x6, 0x3, 0xC, 0x9
};
char key, *lut;
int i, sgn, mag, mod;
for (key = 0xB, lut = lut0, i = 0; i < len; i++) { for (key = 0xB, lut = lut0, i = 0; i < len; i++) {
rsp[i] = (key + 5 * chl[i]) & 0xF; rsp[i] = (key + 5 * chl[i]) & 0xF;
key = lut[rsp[i]]; key = lut[rsp[i]];
sgn = (rsp[i] >> 3) & 0x1; sgn = (rsp[i] >> 3) & 0x1;
mag = ((sgn == 1) ? ~rsp[i] : rsp[i]) & 0x7; mag = ((sgn == 1) ? ~rsp[i] : rsp[i]) & 0x7;
mod = (mag % 3 == 1) ? sgn : 1 - sgn; mod = (mag % 3 == 1) ? sgn : 1 - sgn;
if (lut == lut1 && (rsp[i] == 0x1 || rsp[i] == 0x9)) if (lut == lut1 && (rsp[i] == 0x1 || rsp[i] == 0x9))
mod = 1; mod = 1;
if (lut == lut1 && (rsp[i] == 0xB || rsp[i] == 0xE)) if (lut == lut1 && (rsp[i] == 0xB || rsp[i] == 0xE))
mod = 0; mod = 0;
lut = (mod == 1) ? lut1 : lut0; lut = (mod == 1) ? lut1 : lut0;
} }
} }