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Merge pull request #2747 from bmunger/r9751

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r9751: Add more SMIOC commands.  Disktool is now able to print startu…
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ajrhacker 2017-10-23 22:21:48 -04:00 committed by GitHub
commit 9b7d323a47
1 changed files with 22 additions and 6 deletions
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28
src/mame/drivers/r9751.cpp
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@ -124,7 +124,8 @@ private:
uint32_t fdd_dma_bank;
attotime timer_32khz_last;
uint8_t m_term_data;
uint8_t m_serial_status;
uint16_t m_serial_status;
uint16_t m_serial_status2;
// End registers
address_space *m_mem;
@ -240,8 +241,11 @@ READ32_MEMBER( r9751_state::r9751_mmio_5ff_r )
return data;
/* SMIOC region (0x98, device 26) */
case 0x0898: /* Serial status or DMA status */
//logerror("m_serial_status = %02X \n", m_serial_status);
return m_serial_status;
if(TRACE_SMIOC) logerror("m_serial_status = %04X \n", m_serial_status | 0x8);
return m_serial_status | 0x8;
case 0x0870: /* Serial status or DMA status 2 */
if(TRACE_SMIOC) logerror("m_serial_status2 = %04X \n", m_serial_status);
return m_serial_status2;
/* SMIOC region (0x9C, device 27) */
/* PDC FDD region (0xB0, device 44 */
@ -291,23 +295,35 @@ WRITE32_MEMBER( r9751_state::r9751_mmio_5ff_w )
m_serial_status = data;
if(TRACE_SMIOC) logerror("Serial status: %08X PC: %08X\n", data, space.machine().firstcpu->pc());
break;
case 0x0270:
m_serial_status2 = data;
if(TRACE_SMIOC) logerror("Serial status2: %08X PC: %08X\n", data, space.machine().firstcpu->pc());
break;
case 0x4090:
case 0x4098: /* Serial DMA Command */
m_serial_status = 0x40;
switch(data)
{
case 0x1000:
m_serial_status = 0x0140;
m_serial_status2 = 0x0140;
if(TRACE_SMIOC) logerror("Serial DMA command 0x1000 PC: %08X\n", space.machine().firstcpu->pc());
break;
case 0x4100: /* Send byte to serial */
for(int i = 0; i < smioc_dma_w_length; i++)
{
if(TRACE_SMIOC) logerror("Serial byte: %02X PC: %08X\n", m_mem->read_dword(smioc_out_addr+i*2), space.machine().firstcpu->pc());
m_terminal->write(space,0,m_mem->read_dword(smioc_out_addr+i*2));
if(TRACE_SMIOC) logerror("Serial byte: %02X PC: %08X\n", m_mem->read_word(smioc_out_addr+i*2), space.machine().firstcpu->pc());
m_terminal->write(space,0,m_mem->read_word(smioc_out_addr+i*2));
}
m_serial_status = 0x4140;
break;
case 0x4200: /* Write XON into serial DMA input register (0x5FF0809C) memory location */
m_maincpu->space(AS_PROGRAM).write_byte(smioc_in_addr,0x11);
if(TRACE_SMIOC) logerror("Serial DMA command 0x4200 (XON) PC: %08X\n", space.machine().firstcpu->pc());
m_serial_status = 0x4440;
break;
default:
if(TRACE_SMIOC) logerror("Unknown serial DMA command: %X\n", data);
m_serial_status = 0x40;
}
break;
case 0xC098: /* Serial DMA output address */