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macpdm: Add scsi write

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This commit is contained in:
Olivier Galibert 2021-03-26 23:10:15 +01:00
parent a20c9d1d31
commit 4e1d0de712
1 changed files with 9 additions and 1 deletions
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10
src/mame/drivers/macpdm.cpp
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@ -719,7 +719,15 @@ void macpdm_state::dma_scsi_a_step()
m_dma_scsi_a_in_step = true;
if(m_dma_scsi_a_ctrl & 0x40) {
fatalerror("scsi dma write\n");
while(m_via2_ifr & 0x01) {
if(m_dma_scsi_buffer_byte_count == 0) {
m_dma_scsi_buffer_byte_count = 8;
m_dma_scsi_buffer = m_maincpu->space().read_qword(m_dma_scsi_a_base_adr + m_dma_scsi_a_cur_offset);
m_dma_scsi_a_cur_offset += 8;
}
m_dma_scsi_buffer_byte_count --;
m_ncr53c94->dma_w(m_dma_scsi_buffer >> (8*m_dma_scsi_buffer_byte_count));
}
} else {
while(m_via2_ifr & 0x01) {