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added a hack for mametesters 05256 [smf]

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smf- 2014-01-22 13:52:40 +00:00
parent 24f1903f15
commit 57f53a1d90
1 changed files with 33 additions and 1 deletions
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34
src/mame/drivers/jaguar.c
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@ -366,6 +366,38 @@ IRQ_CALLBACK_MEMBER(jaguar_state::jaguar_irq_callback)
}
/// HACK: Maximum force requests data but doesn't transfer it all before issuing another command.
/// According to the ATA specification this is not allowed, more investigation is required.
#include "machine/idehd.h"
extern const device_type COJAG_HARDDISK;
class cojag_hdd : public ide_hdd_device
{
public:
cojag_hdd(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: ide_hdd_device(mconfig, COJAG_HARDDISK, "cojag HDD", tag, owner, clock, "cojag_hdd", __FILE__)
{
}
virtual WRITE16_HANDLER(write_cs0)
{
// the first write is to the device head register
if( offset == 6 && (m_status & IDE_STATUS_DRQ))
{
m_status &= ~IDE_STATUS_DRQ;
}
ide_hdd_device::write_cs0(space, offset, data, mem_mask);
}
};
const device_type COJAG_HARDDISK = &device_creator<cojag_hdd>;
SLOT_INTERFACE_START(cojag_devices)
SLOT_INTERFACE("hdd", COJAG_HARDDISK)
SLOT_INTERFACE_END
/*************************************
*
@ -1785,7 +1817,7 @@ static MACHINE_CONFIG_START( cojagr3k, jaguar_state )
MCFG_NVRAM_ADD_1FILL("nvram")
MCFG_VT83C461_ADD("ide", ata_devices, "hdd", NULL, true)
MCFG_VT83C461_ADD("ide", cojag_devices, "hdd", NULL, true)
MCFG_ATA_INTERFACE_IRQ_HANDLER(WRITELINE(jaguar_state, external_int))
/* video hardware */