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clcd.cpp: Added IEC bus connections. (#9843)

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Mike Naberezny 2022-05-28 15:40:42 -07:00 committed by GitHub
parent ecd02a067f
commit 5d0a5ab5f2
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1 changed files with 28 additions and 1 deletions
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29
src/mame/drivers/clcd.cpp
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@ -1,5 +1,5 @@
// license:BSD-3-Clause
// copyright-holders:Curt Coder,smf
// copyright-holders:Curt Coder,smf,Mike Naberezny
/***************************************************************************
Commodore LCD prototype
@ -13,6 +13,7 @@
#include "emu.h"
#include "bus/cbmiec/cbmiec.h"
#include "bus/centronics/ctronics.h"
#include "bus/rs232/rs232.h"
#include "cpu/m6502/m65c02.h"
@ -38,6 +39,7 @@ public:
m_via0(*this, "via0"),
m_rtc(*this, "rtc"),
m_centronics(*this, "centronics"),
m_iec(*this, CBM_IEC_TAG),
m_ram(*this, "ram"),
m_nvram(*this, "nvram"),
m_bankdev(*this, "bank%u", 1U),
@ -390,8 +392,29 @@ public:
m_key_column = data;
}
uint8_t via0_pb_r()
{
uint8_t data = 0;
if (!m_iec->clk_r())
{
data |= 1<<6;
}
if (!m_iec->data_r())
{
data |= 1<<7;
}
return data;
}
void via0_pb_w(uint8_t data)
{
m_iec->host_atn_w(!BIT(data, 3));
m_iec->host_clk_w(!BIT(data, 4));
m_iec->host_data_w(!BIT(data, 5));
write_key_poll((data >> 0) & 1);
m_rtc->cs2_w((data >> 1) & 1);
}
@ -491,6 +514,7 @@ private:
required_device<via6522_device> m_via0;
required_device<msm58321_device> m_rtc;
required_device<centronics_device> m_centronics;
required_device<cbm_iec_device> m_iec;
required_device<ram_device> m_ram;
required_device<nvram_device> m_nvram;
required_device_array<address_map_bank_device, 4> m_bankdev;
@ -670,6 +694,7 @@ void clcd_state::clcd(machine_config &config)
via6522_device &via0(R65C22(config, "via0", 1000000));
via0.writepa_handler().set(FUNC(clcd_state::via0_pa_w));
via0.writepb_handler().set(FUNC(clcd_state::via0_pb_w));
via0.readpb_handler().set(FUNC(clcd_state::via0_pb_r));
via0.cb1_handler().set(FUNC(clcd_state::via0_cb1_w));
via0.irq_handler().set("mainirq", FUNC(input_merger_device::in_w<0>));
@ -731,6 +756,8 @@ void clcd_state::clcd(machine_config &config)
RAM(config, "ram").set_default_size("128K").set_extra_options("32K,64K").set_default_value(0);
NVRAM(config, "nvram").set_custom_handler(FUNC(clcd_state::nvram_init));
cbm_iec_slot_device::add(config, m_iec, nullptr);
}