Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 08:49:55 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Coding conventions... (nw)

Browse Source
This commit is contained in:
RobertoFresca 2017-12-20 22:36:04 -03:00
parent e5b3cdf5d8
commit a0d70d6d5b
1 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/mame/drivers/amaticmg.cpp
View File

@ -1072,13 +1072,13 @@ ROM_END
void amaticmg_state::encf(uint8_t ciphertext, int address, uint8_t &plaintext, int &newaddress)
{
int aux = address & 0xfff;
aux = aux ^ (aux>>6);
aux = ((aux<<6) | (aux>>6)) & 0xfff;
uint8_t aux2 = bitswap<8>(aux, 9,10,4,1,6,0,7,3);
aux2 ^= aux2>>4;
aux2 = (aux2<<4) | (aux2>>4);
ciphertext ^= ciphertext<<4;
plaintext = (ciphertext<<4) | (ciphertext>>4);
aux = aux ^ (aux >> 6);
aux = ((aux << 6) | (aux >> 6)) & 0xfff;
uint8_t aux2 = bitswap<8>(aux, 9, 10, 4, 1, 6, 0, 7, 3);
aux2 ^= aux2 >> 4;
aux2 = (aux2 << 4) | (aux2 >> 4);
ciphertext ^= ciphertext << 4;
plaintext = (ciphertext << 4) | (ciphertext >> 4);
plaintext ^= aux2;
newaddress = (address & ~0xfff) | aux;
}
@ -1095,7 +1095,7 @@ void amaticmg_state::decrypt(int key1, int key2)
for (int i = 0; i < len; i++)
{
encf(src[i], i, plaintext, newaddress);
dest[newaddress^(key1^(key1>>6))] = plaintext^key2;
dest[newaddress ^ (key1 ^ (key1 >> 6))] = plaintext ^ key2;
}
}