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CIA6526: slight interface cleanup

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This commit is contained in:
Curt Coder 2009-12-15 12:36:38 +00:00
parent 3292e64a31
commit ff5c33c8d1
2 changed files with 32 additions and 0 deletions
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27
src/emu/machine/6526cia.c
View File

@ -83,6 +83,7 @@ struct _cia_state
UINT8 icr;
UINT8 ics;
UINT8 irq;
int flag;
/* Serial */
UINT8 loaded;
@ -192,6 +193,7 @@ static DEVICE_START( cia )
state_save_register_device_item(device, 0, cia->icr);
state_save_register_device_item(device, 0, cia->ics);
state_save_register_device_item(device, 0, cia->irq);
state_save_register_device_item(device, 0, cia->flag);
state_save_register_device_item(device, 0, cia->loaded);
state_save_register_device_item(device, 0, cia->sdr);
state_save_register_device_item(device, 0, cia->sp);
@ -640,6 +642,31 @@ void cia_set_input_cnt(const device_config *device, int data)
cia->cnt = data ? 1 : 0;
}
WRITE_LINE_DEVICE_HANDLER( mos6526_tod_w )
{
if (state) cia_clock_tod(device);
}
WRITE_LINE_DEVICE_HANDLER( mos6526_cnt_w )
{
cia_set_input_cnt(device, state);
}
WRITE_LINE_DEVICE_HANDLER( mos6526_sp_w )
{
cia_set_input_sp(device, state);
}
WRITE_LINE_DEVICE_HANDLER( mos6526_flag_w )
{
cia_state *cia = get_token(device);
if (cia->flag && !state)
{
cia->flag = state;
cia_issue_index(device);
}
}
/*-------------------------------------------------
cia_r

5
src/emu/machine/6526cia.h
View File

@ -70,6 +70,11 @@ void cia_issue_index(const device_config *device);
void cia_set_input_cnt(const device_config *device, int data);
void cia_set_input_sp(const device_config *device, int data);
WRITE_LINE_DEVICE_HANDLER( mos6526_tod_w );
WRITE_LINE_DEVICE_HANDLER( mos6526_cnt_w );
WRITE_LINE_DEVICE_HANDLER( mos6526_sp_w );
WRITE_LINE_DEVICE_HANDLER( mos6526_flag_w );
/* accessors */
UINT8 cia_get_output_a(const device_config *device);
UINT8 cia_get_output_b(const device_config *device);