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(MESS) Application of the AM_DEVSETOFFSET feature.

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This commit is contained in:
Michael Zapf 2013-09-21 22:38:28 +00:00
parent 9ed27202aa
commit 43e1a44c25
3 changed files with 8 additions and 2 deletions
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2
src/mess/drivers/ti99_4x.c
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@ -145,7 +145,7 @@ static ADDRESS_MAP_START(memmap, AS_PROGRAM, 16, ti99_4x_state)
ADDRESS_MAP_GLOBAL_MASK(0xffff)
AM_RANGE(0x0000, 0x1fff) AM_ROM
AM_RANGE(0x8000, 0x80ff) AM_MIRROR(0x0300) AM_RAM
AM_RANGE(0x0000, 0xffff) AM_DEVREADWRITE(DATAMUX_TAG, ti99_datamux_device, read, write)
AM_RANGE(0x0000, 0xffff) AM_DEVREADWRITE(DATAMUX_TAG, ti99_datamux_device, read, write) AM_DEVSETOFFSET(DATAMUX_TAG, ti99_datamux_device, setoffset)
ADDRESS_MAP_END
/*

7
src/mess/machine/ti99/datamux.c
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@ -77,7 +77,7 @@ ti99_datamux_device::ti99_datamux_device(const machine_config &mconfig, const ch
{
}
#define VERBOSE 0
#define VERBOSE 1
#define LOG logerror
/***************************************************************************
@ -208,6 +208,11 @@ WRITE16_MEMBER( ti99_datamux_device::write )
m_ready(CLEAR_LINE);
}
SETOFFSET_MEMBER( ti99_datamux_device::setoffset )
{
if (VERBOSE>6) LOG("set address %04x\n", offset << 1);
}
/*
The datamux is connected to the clock line in order to operate
the wait state counter.

1
src/mess/machine/ti99/datamux.h
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@ -70,6 +70,7 @@ public:
ti99_datamux_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_READ16_MEMBER( read );
DECLARE_WRITE16_MEMBER( write );
DECLARE_SETOFFSET_MEMBER( setoffset );
void clock_in(int state);