Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 17:00:53 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

goldstar.cpp: correct bitswaps for roypok96c. Now stuck at Program Check screen. (nw)

Browse Source
This commit is contained in:
Ivan Vangelista 2019-07-29 21:54:36 +02:00
parent 6eb937b4d7
commit 421e97cc5a
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/mame/drivers/goldstar.cpp
View File

@ -16636,7 +16636,7 @@ void cmaster_state::init_rp36c3()
m_maincpu->space(AS_IO).install_read_handler(0x17, 0x17, read8_delegate(FUNC(cmaster_state::fixedval48_r), this));
}
void cmaster_state::init_rp96sub() // 95 33 95 33 70 6C 70 6C... XORs seem ok. need bitswap and handler.
void cmaster_state::init_rp96sub() // 95 33 95 33 70 6C 70 6C... XORs and bitswaps seem ok. Stuck at Program Check screen. Unlike the other sets, there aren't unmapped reads where to put the handler.
{
uint8_t *ROM = memregion("maincpu")->base();
for (int i = 0; i < 0x10000; i++)
@ -16645,10 +16645,10 @@ void cmaster_state::init_rp96sub() // 95 33 95 33 70 6C 70 6C... XORs seem ok.
switch (i & 5)
{
case 0: x = bitswap<8>(x ^ 0x6a, 7, 6, 5, 4, 3, 2, 1, 0); break;
case 1: x = bitswap<8>(x ^ 0xcc, 7, 6, 5, 4, 3, 2, 1, 0); break;
case 4: x = bitswap<8>(x ^ 0x8f, 7, 6, 5, 4, 3, 2, 1, 0); break;
case 5: x = bitswap<8>(x ^ 0x93, 7, 6, 5, 4, 3, 2, 1, 0); break;
case 0: x = bitswap<8>(x ^ 0x6a, 2, 1, 0, 7, 6, 5, 4, 3); break;
case 1: x = bitswap<8>(x ^ 0xcc, 0, 7, 6, 5, 4, 3, 2, 1); break;
case 4: x = bitswap<8>(x ^ 0x8f, 3, 2, 1, 0, 7, 6, 5, 4); break;
case 5: x = bitswap<8>(x ^ 0x93, 4, 3, 2, 1, 0, 7, 6, 5); break;
}
ROM[i] = x;