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pic16c5x: changed rtcc pin to inputline (nw)

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This commit is contained in:
hap 2017-02-13 02:41:48 +01:00
parent 440e660181
commit 8db8177624
3 changed files with 20 additions and 11 deletions
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21
src/devices/cpu/pic16c5x/pic16c5x.cpp
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@ -50,7 +50,7 @@
* Fixes the case where the status register is the destination. *
* hap (12-Feb-2017) Ver 1.16 *
* - Added basic support for the old GI PIC1650 and PIC1655. *
* - Made RTCC(aka T0CKI) pin a writeline handler. *
* - Made RTCC(aka T0CKI) pin an inputline handler. *
* *
* *
* **** Notes: **** *
@ -1128,16 +1128,21 @@ void pic16c5x_device::pic16c5x_update_timer(int counts)
}
}
WRITE_LINE_MEMBER(pic16c5x_device::write_rtcc)
void pic16c5x_device::execute_set_input(int line, int state)
{
state = (state) ? 1 : 0;
switch (line)
{
case PIC16C5x_RTCC:
if (T0CS && state != m_rtcc) /* Count mode, edge triggered */
if ((T0SE && !state) || (!T0SE && state))
m_count_pending = true;
/* Count mode, edge triggered */
if (T0CS && state != m_rtcc)
if ((T0SE && !state) || (!T0SE && state))
m_count_pending = true;
m_rtcc = state;
break;
m_rtcc = state;
default:
break;
}
}

8
src/devices/cpu/pic16c5x/pic16c5x.h
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@ -16,6 +16,11 @@
#ifndef __PIC16C5X_H__
#define __PIC16C5X_H__
// input lines
enum
{
PIC16C5x_RTCC = 0
};
// i/o ports
enum
@ -83,8 +88,6 @@ public:
template<class _Object> static devcb_base &set_write_c_callback(device_t &device, _Object object) { return downcast<pic16c5x_device &>(device).m_write_c.set_callback(object); }
template<class _Object> static devcb_base &set_write_d_callback(device_t &device, _Object object) { return downcast<pic16c5x_device &>(device).m_write_d.set_callback(object); }
DECLARE_WRITE_LINE_MEMBER(write_rtcc); // RTCC pin
/****************************************************************************
* Function to configure the CONFIG register. This is actually hard-wired
* during ROM programming, so should be called in the driver INIT, with
@ -115,6 +118,7 @@ protected:
virtual uint32_t execute_input_lines() const override { return 1; }
virtual uint32_t execute_default_irq_vector() const override { return 0; }
virtual void execute_run() override;
virtual void execute_set_input(int line, int state) override;
// device_memory_interface overrides
virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const override

2
src/mame/drivers/hh_pic16.cpp
View File

@ -356,7 +356,7 @@ static MACHINE_CONFIG_START( touchme, touchme_state )
MCFG_PIC16C5x_WRITE_C_CB(WRITE8(touchme_state, write_c))
MCFG_DEVICE_ADD("clock", CLOCK, 300000/4) // PIC CLKOUT, tied to RTCC
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("maincpu", pic1655_device, write_rtcc))
MCFG_CLOCK_SIGNAL_HANDLER(INPUTLINE("maincpu", PIC16C5x_RTCC))
MCFG_TIMER_DRIVER_ADD_PERIODIC("display_decay", hh_pic16_state, display_decay_tick, attotime::from_msec(1))
MCFG_DEFAULT_LAYOUT(layout_touchme)