Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-26 18:23:08 +03:00
Code Issues Actions 29 Packages Projects Releases Wiki Activity

(MESS) gamecom : fixed calculator

Browse Source
This commit is contained in:
Robert 2014-11-17 22:17:48 +11:00
parent 4f1c2bb988
commit 056dced923
1 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/emu/cpu/sm8500/sm85ops.h
View File

@ -63,8 +63,8 @@
} \
break; \
case 0xC0: \
s2 = mem_readword( sm8500_b2w[r1 & 0x07] ); \
mem_writeword( sm8500_b2w[r1 & 0x07], s2 - 1 ); \
s2 = mem_readword( sm8500_b2w[r1 & 0x07])-1; \
mem_writeword( sm8500_b2w[r1 & 0x07], s2 ); \
break; \
} \
r2 = r1; \
@ -1270,12 +1270,16 @@ case 0x59: /* Invalid - 2? cycles - Flags affected: --------? */
mycycles += 2;
break;
case 0x5A: /* unk5A - 7,8,12,9,8 cycles */
logerror( "%04X: unk%02x\n", m_PC-1,op );
ARG_ad16;
logerror( "%04X: unk%02x\n", m_PC-1,op );
/* NOTE: This unknown command is used in the calculator as a compare instruction
at 0x493A and 0x4941, we set the flags on the 3rd byte, although its real
function remains a mystery */
ARG_iR;
OP_CMP8( 0, r1 );
mycycles += 7;
break;
case 0x5B: /* unk5B - 6,7,11,8,7 cycles */
logerror( "%04X: unk%02x\n", m_PC-1,op );
logerror( "%04X: unk%02x\n", m_PC-1,op );
/* NOTE: This unknown command is used in several carts, the code below allows those carts to boot */
ARG_iR;
r1 = r2 & 7;