Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-05-23 14:19:01 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

cb2001: new opcode added

Browse Source
This commit is contained in:
Roberto Zandona 2008-12-13 14:59:37 +00:00
parent 5ea2c772c0
commit acbad50008
1 changed files with 19 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
src/mame/drivers/cb2001.c
View File

@ -49,13 +49,13 @@ const UINT8 cb2001_decryption_table[256] = {
// pppp
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,0x3a,xxxx,xxxx,xxxx, /* 10 */
// ????
xxxx,0x8e,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, xxxx,xxxx,xxxx,0x75,xxxx,xxxx,xxxx,xxxx, /* 20 */
// !!!! ????
xxxx,0x8e,xxxx,xxxx,xxxx,0x49,xxxx,xxxx, xxxx,xxxx,xxxx,0x75,xxxx,xxxx,xxxx,xxxx, /* 20 */
// !!!! ???? pppp
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,0xbe,xxxx, xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, /* 30 */
// ????
// pppp
xxxx,0xea,xxxx,xxxx,xxxx,0xb0,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, /* 40 */
// !!!! gggg
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,0x49,xxxx, xxxx,xxxx,xxxx,xxxx,0x75,xxxx,xxxx,xxxx, /* 50 */
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,0x75,xxxx,xxxx,xxxx, /* 50 */
// ???? ????
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,0xba,xxxx, /* 60 */
// gggg
@ -64,15 +64,15 @@ const UINT8 cb2001_decryption_table[256] = {
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, /* 80 */
//
xxxx,xxxx,0xe9,xxxx,xxxx,xxxx,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,0xb9,xxxx,xxxx,xxxx, /* 90 */
// ???? ????
// ???? pppp
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,0xb8, xxxx,xxxx,0xfa,xxxx,xxxx,xxxx,xxxx,xxxx, /* A0 */
// !!!! ????
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, /* B0 */
//
xxxx,xxxx,0xee,xxxx,xxxx,0x75,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, /* C0 */
xxxx,xxxx,0xee,xxxx,xxxx,0xe2,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, /* C0 */
// ???? pppp
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, 0x88,xxxx,xxxx,xxxx,xxxx,0xfa,0xc7,xxxx, /* D0 */
// ???? ???? !!!!
xxxx,xxxx,0x46,xxxx,xxxx,xxxx,xxxx,xxxx, 0x88,xxxx,xxxx,xxxx,xxxx,0xfa,0xc7,xxxx, /* D0 */
// ???? ???? ???? !!!!
xxxx,xxxx,xxxx,0xc6,xxxx,xxxx,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, /* E0 */
// !!!!
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx, /* F0 */
@ -80,29 +80,35 @@ const UINT8 cb2001_decryption_table[256] = {
};
/* robiza notes:
9c -> it's a counter (like mov cw,#value) -> not sure the register (cw,bw,....)
56 -> decrement the counter (like dec cw) -> not sure the register (cw,bw,....)
2b -> conditional jmp for sure
56 -> ????
5c -> conditional jmp for sure
36 -> be ????
aa -> ????
92 -> e9 (probably)
1c ????
d8 ????
dd -> fa (di)
guessed:
45 -> b0 (mov al,#value)
6e -> ba (mov dw,#value)
c2 -> ee (out dw,al)
probably:
00 -> e8 (call)
2b -> conditional jmp for sure (75)
36 -> be
41 -> ea (jmp_far)
70 -> c3 (ret)
c5 -> 75 (jne)
9c -> it's a counter (like mov cw,#value) -> not sure the register (cw,bw,....) -> b9 (cw)
c5 -> 75 (loop?)
checked against gussun and quizf1 (start up code):
21 -> 8e