diff options
author | 2015-04-21 15:15:30 +0200 | |
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committer | 2015-04-21 15:15:30 +0200 | |
commit | 30523ddcd0a4f40cea928c68b4834cc3fb990f67 (patch) | |
tree | d0459bfbefa139f49fc31ace15b597a1d1116beb /src | |
parent | a0054fed49b6598f9875ffc6632a14600e5a0ac6 (diff) |
(MESS) ti99: Forgotten null check. (nw)
Diffstat (limited to 'src')
-rw-r--r-- | src/emu/bus/ti99_peb/hfdc.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/emu/bus/ti99_peb/hfdc.c b/src/emu/bus/ti99_peb/hfdc.c index 6d778d3c5e1..42bec79a255 100644 --- a/src/emu/bus/ti99_peb/hfdc.c +++ b/src/emu/bus/ti99_peb/hfdc.c @@ -578,16 +578,20 @@ void myarc_hfdc_device::signal_drive_status() { if ((m_output1_latch & 0xe0)!=0) { - if (m_current_harddisk->ready_r()==ASSERT_LINE) + if (m_current_harddisk != NULL) { - m_status_latch |= HDC_DS_READY; - set_bits(m_status_latch, HDC_DS_SKCOM, m_current_harddisk->seek_complete_r()==ASSERT_LINE); - set_bits(m_status_latch, HDC_DS_TRK00, m_current_harddisk->trk00_r()==ASSERT_LINE); + if (m_current_harddisk->ready_r()==ASSERT_LINE) + { + m_status_latch |= HDC_DS_READY; + set_bits(m_status_latch, HDC_DS_SKCOM, m_current_harddisk->seek_complete_r()==ASSERT_LINE); + set_bits(m_status_latch, HDC_DS_TRK00, m_current_harddisk->trk00_r()==ASSERT_LINE); + } } + // If WDS is selected but not connected, WDS.ready* and WDS.seekComplete* are 1, so Ready=SeekComplete=0 + else set_bits(m_status_latch, HDC_DS_READY | HDC_DS_SKCOM, false); } } - // If WDS is selected but not connected, WDS.ready* and WDS.seekComplete* are 1, so Ready=SeekComplete=0 reply |= m_status_latch; m_hdc9234->auxbus_in(reply); |