Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-25 09:50:04 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

e132xs: fix regression with dynabomb, nw

Browse Source
This commit is contained in:
mooglyguy 2017-11-15 22:16:39 +01:00
parent 60b10988ba
commit 7791f460d4
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/devices/cpu/e132xs/e132xsop.hxx
View File

@ -924,12 +924,13 @@ void hyperstone_device::hyperstone_subc()
uint32_t dreg = (DST_GLOBAL ? m_global_regs : m_local_regs)[dst_code]; uint32_t dreg = (DST_GLOBAL ? m_global_regs : m_local_regs)[dst_code];
const uint32_t c = GET_C; const uint32_t c = GET_C;
uint32_t old_z = SR & Z_MASK;
SR &= ~(C_MASK | V_MASK | Z_MASK | N_MASK); SR &= ~(C_MASK | V_MASK | Z_MASK | N_MASK);
if (SRC_GLOBAL && (src_code == SR_REGISTER)) if (SRC_GLOBAL && (src_code == SR_REGISTER))
{ {
const uint64_t tmp = uint64_t(dreg) - uint64_t(c); const uint64_t tmp = uint64_t(dreg) - uint64_t(c);
SR |= ((tmp ^ dreg) & dreg & 0x80000000); SR |= ((tmp ^ dreg) & dreg & 0x80000000) >> 28;
SR |= (tmp & 0x100000000) >> 32; SR |= (tmp & 0x100000000) >> 32;
dreg -= c; dreg -= c;
} }
@ -939,7 +940,7 @@ void hyperstone_device::hyperstone_subc()
const uint64_t tmp = uint64_t(dreg) - (uint64_t(sreg) + uint64_t(c)); const uint64_t tmp = uint64_t(dreg) - (uint64_t(sreg) + uint64_t(c));
//CHECK! //CHECK!
const uint32_t sreg_c = sreg + c; const uint32_t sreg_c = sreg + c;
SR |= ((tmp ^ dreg) & (dreg ^ sreg_c) & 0x80000000); SR |= ((tmp ^ dreg) & (dreg ^ sreg_c) & 0x80000000) >> 28;
SR |= (tmp & 0x100000000) >> 32; SR |= (tmp & 0x100000000) >> 32;
dreg -= sreg_c; dreg -= sreg_c;
} }
@ -949,7 +950,7 @@ void hyperstone_device::hyperstone_subc()
else else
m_local_regs[dst_code] = dreg; m_local_regs[dst_code] = dreg;
if (dreg == 0) if (old_z && dreg == 0)
SR |= Z_MASK; SR |= Z_MASK;
SR |= SIGN_TO_N(dreg); SR |= SIGN_TO_N(dreg);