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bbcm: Switch between internal/external tube ports.

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This commit is contained in:
Nigel Barnes 2017-11-20 13:12:40 +00:00
parent 26d94f2275
commit b35ea25f18
1 changed files with 10 additions and 2 deletions
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12
src/mame/machine/bbc.cpp
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@ -501,7 +501,11 @@ READ8_MEMBER(bbc_state::bbcm_r)
if ((myo>=0x80) && (myo<=0x9f)) return 0xfe; if ((myo>=0x80) && (myo<=0x9f)) return 0xfe;
if ((myo>=0xa0) && (myo<=0xbf)) return m_adlc ? m_adlc->read(space, myo & 0x03) : 0xfe; if ((myo>=0xa0) && (myo<=0xbf)) return m_adlc ? m_adlc->read(space, myo & 0x03) : 0xfe;
if ((myo>=0xc0) && (myo<=0xdf)) return 0xff; if ((myo>=0xc0) && (myo<=0xdf)) return 0xff;
if ((myo>=0xe0) && (myo<=0xff)) return m_intube ? m_intube->host_r(space, myo-0xe0) : 0xff; if ((myo>=0xe0) && (myo<=0xff))
{
if (m_intube && m_ACCCON_ITU) return m_intube->host_r(space, myo-0xe0); /* Internal TUBE */
if (m_extube && !m_ACCCON_ITU) return m_extube->host_r(space, myo-0xe0); /* External TUBE */
}
} }
return 0xfe; return 0xfe;
} }
@ -532,7 +536,11 @@ WRITE8_MEMBER(bbc_state::bbcm_w)
//if ((myo>=0x80) && (myo<=0x9f)) //if ((myo>=0x80) && (myo<=0x9f))
if ((myo>=0xa0) && (myo<=0xbf) && (m_adlc)) m_adlc->write(space, myo & 0x03, data); if ((myo>=0xa0) && (myo<=0xbf) && (m_adlc)) m_adlc->write(space, myo & 0x03, data);
//if ((myo>=0xc0) && (myo<=0xdf)) //if ((myo>=0xc0) && (myo<=0xdf))
if ((myo>=0xe0) && (myo<=0xff) && (m_intube)) m_intube->host_w(space, myo-0xe0, data); if ((myo>=0xe0) && (myo<=0xff))
{
if (m_intube && m_ACCCON_ITU) m_intube->host_w(space, myo-0xe0, data); /* Internal TUBE */
if (m_extube && !m_ACCCON_ITU) m_extube->host_w(space, myo-0xe0, data); /* External TUBE */
}
} }
} }