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cps1: don't access extra i/o ports if they're not configured (nw)

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This commit is contained in:
hap 2019-03-29 21:41:51 +01:00
parent 6d17870736
commit 626d6199b4
1 changed files with 5 additions and 3 deletions
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8
src/mame/video/cps1.cpp
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@ -1810,10 +1810,12 @@ READ16_MEMBER(cps_state::cps1_cps_b_r)
return (m_cps_b_regs[m_game_config->mult_factor1 / 2] *
m_cps_b_regs[m_game_config->mult_factor2 / 2]) >> 16;
if (offset == m_game_config->in2_addr / 2) /* Extra input ports (on C-board) */
/* Extra input ports (on C-board) */
if (m_game_config->in2_addr != 0 && offset == m_game_config->in2_addr / 2)
return ioport("IN2")->read();
if (offset == m_game_config->in3_addr / 2) /* Player 4 controls (on C-board) ("Captain Commando") */
/* Player 4 controls (on C-board) ("Captain Commando") */
if (m_game_config->in3_addr != 0 && offset == m_game_config->in3_addr / 2)
return ioport("IN3")->read();
if (m_cps_version == 2)
@ -1859,7 +1861,7 @@ WRITE16_MEMBER(cps_state::cps1_cps_b_w)
// additional outputs on C-board
if (offset == m_game_config->out2_addr / 2)
if (m_game_config->out2_addr != 0 && offset == m_game_config->out2_addr / 2)
{
if (ACCESSING_BITS_0_7)
{