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52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/***************************************************************************
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Kramer MC machine driver by Miodrag Milanovic
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13/09/2008 Preliminary driver.
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****************************************************************************/
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#include "emu.h"
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#include "machine/z80pio.h"
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#include "includes/kramermc.h"
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READ8_MEMBER(kramermc_state::kramermc_port_a_r)
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{
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return 0xff;
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}
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READ8_MEMBER(kramermc_state::kramermc_port_b_r)
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{
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static const char *const keynames[] = { "LINE0", "LINE1", "LINE2", "LINE3", "LINE4", "LINE5", "LINE6", "LINE7" };
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return machine().root_device().ioport(keynames[m_key_row])->read();
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}
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WRITE8_MEMBER(kramermc_state::kramermc_port_a_w)
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{
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m_key_row = ((data >> 1) & 0x07);
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}
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Z80PIO_INTERFACE( kramermc_z80pio_intf )
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{
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DEVCB_NULL, /* callback when change interrupt status */
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DEVCB_DRIVER_MEMBER(kramermc_state,kramermc_port_a_r),
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DEVCB_DRIVER_MEMBER(kramermc_state,kramermc_port_a_w),
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DEVCB_NULL,
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DEVCB_DRIVER_MEMBER(kramermc_state,kramermc_port_b_r),
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DEVCB_NULL,
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DEVCB_NULL
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};
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/* Driver initialization */
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DRIVER_INIT_MEMBER(kramermc_state,kramermc)
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{
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}
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void kramermc_state::machine_reset()
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{
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m_key_row = 0;
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}
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