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pcd: Sinix 1.2 expects different mmu behavior (nw)

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floppy: don't truncate if format doesn't support save (nw)
This commit is contained in:
cracyc 2015-08-05 17:27:56 -05:00
parent 07935997f1
commit bee820e334
2 changed files with 24 additions and 6 deletions
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2
src/emu/imagedev/floppy.c
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@ -262,7 +262,7 @@ void floppy_image_device::setup_write(floppy_image_format_t *_output_format)
void floppy_image_device::commit_image() void floppy_image_device::commit_image()
{ {
image_dirty = false; image_dirty = false;
if(!output_format) if(!output_format || !output_format->supports_save())
return; return;
io_generic io; io_generic io;
// Do _not_ remove this cast otherwise the pointer will be incorrect when used by the ioprocs. // Do _not_ remove this cast otherwise the pointer will be incorrect when used by the ioprocs.

28
src/mess/drivers/pcd.c
View File

@ -111,6 +111,7 @@ private:
struct { struct {
UINT16 ctl; UINT16 ctl;
UINT16 regs[1024]; UINT16 regs[1024];
int type;
bool sc; bool sc;
} m_mmu; } m_mmu;
}; };
@ -157,6 +158,7 @@ void pcd_state::machine_reset()
m_rst = 0; m_rst = 0;
m_mmu.ctl = 0; m_mmu.ctl = 0;
m_mmu.sc = false; m_mmu.sc = false;
m_mmu.type = ioport("mmu")->read();
} }
READ8_MEMBER( pcd_state::irq_callback ) READ8_MEMBER( pcd_state::irq_callback )
@ -445,9 +447,13 @@ WRITE_LINE_MEMBER(pcd_state::write_scsi_req)
WRITE16_MEMBER(pcd_state::mem_w) WRITE16_MEMBER(pcd_state::mem_w)
{ {
UINT16 *ram = (UINT16 *)m_ram->pointer(); UINT16 *ram = (UINT16 *)m_ram->pointer();
if(m_mmu.ctl & 0x20) if((m_mmu.ctl & 0x20) && m_mmu.type)
{ {
UINT16 reg = m_mmu.regs[((offset >> 10) & 0x7f) | ((m_mmu.ctl & 0x1c) << 5)]; UINT16 reg;
if(m_mmu.type == 2)
reg = m_mmu.regs[((offset >> 10) & 0xff) | ((m_mmu.ctl & 0x18) << 5)];
else
reg = m_mmu.regs[((offset >> 10) & 0x7f) | ((m_mmu.ctl & 0x1c) << 5)];
if(!reg && !space.debugger_access()) if(!reg && !space.debugger_access())
{ {
offset <<= 1; offset <<= 1;
@ -463,9 +469,13 @@ WRITE16_MEMBER(pcd_state::mem_w)
READ16_MEMBER(pcd_state::mem_r) READ16_MEMBER(pcd_state::mem_r)
{ {
UINT16 *ram = (UINT16 *)m_ram->pointer(); UINT16 *ram = (UINT16 *)m_ram->pointer();
if(m_mmu.ctl & 0x20) if((m_mmu.ctl & 0x20) && m_mmu.type)
{ {
UINT16 reg = m_mmu.regs[((offset >> 10) & 0x7f) | ((m_mmu.ctl & 0x1c) << 5)]; UINT16 reg;
if(m_mmu.type == 2)
reg = m_mmu.regs[((offset >> 10) & 0xff) | ((m_mmu.ctl & 0x18) << 5)];
else
reg = m_mmu.regs[((offset >> 10) & 0x7f) | ((m_mmu.ctl & 0x1c) << 5)];
if(!reg && !space.debugger_access()) if(!reg && !space.debugger_access())
{ {
offset <<= 1; offset <<= 1;
@ -526,6 +536,14 @@ FLOPPY_FORMATS_MEMBER( pcd_state::floppy_formats )
FLOPPY_PC_FORMAT FLOPPY_PC_FORMAT
FLOPPY_FORMATS_END FLOPPY_FORMATS_END
static INPUT_PORTS_START(pcd)
PORT_START("mmu")
PORT_CONFNAME(0x03, 0x00, "MMU Type")
PORT_CONFSETTING(0x00, "None")
PORT_CONFSETTING(0x01, "SINIX 1.0")
PORT_CONFSETTING(0x02, "SINIX 1.2")
INPUT_PORTS_END
static MACHINE_CONFIG_START( pcd, pcd_state ) static MACHINE_CONFIG_START( pcd, pcd_state )
MCFG_CPU_ADD("maincpu", I80186, XTAL_16MHz) MCFG_CPU_ADD("maincpu", I80186, XTAL_16MHz)
MCFG_CPU_PROGRAM_MAP(pcd_map) MCFG_CPU_PROGRAM_MAP(pcd_map)
@ -633,4 +651,4 @@ ROM_END
// GAME DRIVERS // GAME DRIVERS
//************************************************************************** //**************************************************************************
COMP( 1984, pcd, 0, 0, pcd, 0, driver_device, 0, "Siemens", "PC-D", MACHINE_NOT_WORKING ) COMP( 1984, pcd, 0, 0, pcd, pcd, driver_device, 0, "Siemens", "PC-D", MACHINE_NOT_WORKING )