mirror of
https://github.com/holub/mame
synced 2025-07-01 16:19:38 +03:00
apricot: Add support for the Winchester controller
This commit is contained in:
Dirk Best
parent
093d7cbf18
commit
ddc3672bad
@ -209,6 +209,8 @@ if (BUSES["APRICOT_EXPANSION"]~=null) then
|
||||
MAME_DIR .. "src/devices/bus/apricot/expansion/cards.h",
|
||||
MAME_DIR .. "src/devices/bus/apricot/expansion/ram.cpp",
|
||||
MAME_DIR .. "src/devices/bus/apricot/expansion/ram.h",
|
||||
MAME_DIR .. "src/devices/bus/apricot/expansion/winchester.cpp",
|
||||
MAME_DIR .. "src/devices/bus/apricot/expansion/winchester.h",
|
||||
}
|
||||
end
|
||||
|
||||
|
||||
@ -9,10 +9,12 @@
|
||||
#include "emu.h"
|
||||
#include "cards.h"
|
||||
#include "ram.h"
|
||||
#include "winchester.h"
|
||||
|
||||
void apricot_expansion_cards(device_slot_interface &device)
|
||||
{
|
||||
device.option_add("128k", APRICOT_128K_RAM);
|
||||
device.option_add("256k", APRICOT_256K_RAM);
|
||||
device.option_add("512k", APRICOT_512K_RAM);
|
||||
device.option_add("winchester", APRICOT_WINCHESTER);
|
||||
}
|
||||
|
||||
254
src/devices/bus/apricot/expansion/winchester.cpp
Normal file
254
src/devices/bus/apricot/expansion/winchester.cpp
Normal file
@ -0,0 +1,254 @@
|
||||
// license:GPL-2.0+
|
||||
// copyright-holders:Dirk Best
|
||||
/***************************************************************************
|
||||
|
||||
ACT Apricot Winchester Controller
|
||||
|
||||
Version Rev 9
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
#include "emu.h"
|
||||
#include "winchester.h"
|
||||
#include "imagedev/harddriv.h"
|
||||
|
||||
//#define LOG_GENERAL (1U << 0)
|
||||
#define LOG_REGS (1U << 1)
|
||||
#define LOG_DATA (1U << 2)
|
||||
|
||||
//#define VERBOSE (LOG_REGS)
|
||||
//#define LOG_OUTPUT_STREAM std::cout
|
||||
|
||||
#include "logmacro.h"
|
||||
|
||||
#define LOGREGS(...) LOGMASKED(LOG_REGS, __VA_ARGS__)
|
||||
#define LOGDATA(...) LOGMASKED(LOG_DATA, __VA_ARGS__)
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// DEVICE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
DEFINE_DEVICE_TYPE(APRICOT_WINCHESTER, apricot_winchester_device, "apricot_winchester", "Apricot Winchester Controller Board")
|
||||
|
||||
//-------------------------------------------------
|
||||
// regs - controller register i/o map
|
||||
//-------------------------------------------------
|
||||
|
||||
void apricot_winchester_device::regs(address_map &map)
|
||||
{
|
||||
map(0x0e0, 0x0ef).rw(m_hdc, FUNC(wd1010_device::read), FUNC(wd1010_device::write)).umask16(0x00ff);
|
||||
map(0x1e0, 0x1e0).rw(FUNC(apricot_winchester_device::int_r), FUNC(apricot_winchester_device::head_w<0>)).umask16(0x00ff);
|
||||
map(0x1e2, 0x1e2).w(FUNC(apricot_winchester_device::head_w<1>)).umask16(0x00ff);
|
||||
map(0x1e4, 0x1e4).w(FUNC(apricot_winchester_device::head_w<2>)).umask16(0x00ff);
|
||||
map(0x1e6, 0x1e6).w(FUNC(apricot_winchester_device::drive_w<0>)).umask16(0x00ff);
|
||||
map(0x1e8, 0x1e8).w(FUNC(apricot_winchester_device::xferd_w)).umask16(0x00ff); // transferred
|
||||
map(0x1ea, 0x1ea).w(FUNC(apricot_winchester_device::hbcr_w)).umask16(0x00ff); // host buffer clear register
|
||||
map(0x1ec, 0x1ec).w(FUNC(apricot_winchester_device::clksel_w)).umask16(0x00ff); // buffer chip read/write clock select (host or wdc)
|
||||
map(0x1ee, 0x1ee).w(FUNC(apricot_winchester_device::drive_w<1>)).umask16(0x00ff);
|
||||
map(0x1f0, 0x1f0).rw(FUNC(apricot_winchester_device::data_r), FUNC(apricot_winchester_device::data_w)).umask16(0x00ff);
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_add_mconfig - add device configuration
|
||||
//-------------------------------------------------
|
||||
|
||||
void apricot_winchester_device::device_add_mconfig(machine_config &config)
|
||||
{
|
||||
WD1010(config, m_hdc, 5000000);
|
||||
m_hdc->out_intrq_callback().set(FUNC(apricot_winchester_device::hdc_intrq_w));
|
||||
m_hdc->in_data_callback().set(FUNC(apricot_winchester_device::hdc_data_r));
|
||||
m_hdc->out_data_callback().set(FUNC(apricot_winchester_device::hdc_data_w));
|
||||
|
||||
HARDDISK(config, "hdc:0", 0);
|
||||
HARDDISK(config, "hdc:1", 0);
|
||||
}
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// LIVE DEVICE
|
||||
//**************************************************************************
|
||||
|
||||
//-------------------------------------------------
|
||||
// apricot_winchester_device - constructor
|
||||
//-------------------------------------------------
|
||||
|
||||
apricot_winchester_device::apricot_winchester_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
|
||||
device_t(mconfig, APRICOT_WINCHESTER, tag, owner, clock),
|
||||
device_apricot_expansion_card_interface(mconfig, *this),
|
||||
m_hdc(*this, "hdc"),
|
||||
m_ram_ptr(0),
|
||||
m_int(0),
|
||||
m_drive(0),
|
||||
m_head(0),
|
||||
m_hbcr(0),
|
||||
m_clksel(0)
|
||||
{
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_start - device-specific startup
|
||||
//-------------------------------------------------
|
||||
|
||||
void apricot_winchester_device::device_start()
|
||||
{
|
||||
// allocate 8-bit buffer ram (8k)
|
||||
m_ram = std::make_unique<uint8_t[]>(0x2000);
|
||||
|
||||
// register for save states
|
||||
save_pointer(NAME(m_ram), 0x2000);
|
||||
save_item(NAME(m_ram_ptr));
|
||||
save_item(NAME(m_int));
|
||||
save_item(NAME(m_drive));
|
||||
save_item(NAME(m_head));
|
||||
save_item(NAME(m_hbcr));
|
||||
save_item(NAME(m_clksel));
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_reset - device-specific reset
|
||||
//-------------------------------------------------
|
||||
|
||||
void apricot_winchester_device::device_reset()
|
||||
{
|
||||
m_bus->install_io_device(0x000, 0xfff, *this, &apricot_winchester_device::regs);
|
||||
}
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// IMPLEMENTATION
|
||||
//**************************************************************************
|
||||
|
||||
WRITE_LINE_MEMBER( apricot_winchester_device::hdc_intrq_w )
|
||||
{
|
||||
LOGREGS("hdc_intrq_w: %d\n", state);
|
||||
|
||||
m_int = state;
|
||||
m_bus->int2_w(state);
|
||||
}
|
||||
|
||||
READ8_MEMBER( apricot_winchester_device::hdc_data_r )
|
||||
{
|
||||
uint8_t data = 0xff;
|
||||
|
||||
if (m_clksel == 1)
|
||||
{
|
||||
LOGDATA("hdc_data_r[%04x]\n", m_ram_ptr);
|
||||
|
||||
data = m_ram[m_ram_ptr];
|
||||
if (m_ram_ptr < 0x1fff)
|
||||
m_ram_ptr++;
|
||||
}
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
WRITE8_MEMBER( apricot_winchester_device::hdc_data_w )
|
||||
{
|
||||
if (m_clksel == 1)
|
||||
{
|
||||
LOGDATA("hdc_data_w[%04x] = %02x\n", m_ram_ptr, data);
|
||||
|
||||
m_ram[m_ram_ptr] = data;
|
||||
if (m_ram_ptr < 0x1fff)
|
||||
m_ram_ptr++;
|
||||
}
|
||||
}
|
||||
|
||||
READ8_MEMBER( apricot_winchester_device::int_r )
|
||||
{
|
||||
return m_int;
|
||||
}
|
||||
|
||||
template<int N>
|
||||
WRITE8_MEMBER( apricot_winchester_device::head_w )
|
||||
{
|
||||
m_head = (m_head & ~(1 << N)) | (BIT(data, 0) << N);
|
||||
LOGREGS("Select head: %d\n", m_head);
|
||||
}
|
||||
|
||||
template<int N>
|
||||
WRITE8_MEMBER( apricot_winchester_device::drive_w )
|
||||
{
|
||||
m_drive = (m_drive & ~(1 << N)) | (BIT(data, 0) << N);
|
||||
LOGREGS("Select drive: %d\n", m_drive);
|
||||
|
||||
// forward drive status to the hdc
|
||||
harddisk_image_device *drive = nullptr;
|
||||
|
||||
switch (m_drive)
|
||||
{
|
||||
case 0:
|
||||
drive = nullptr;
|
||||
break;
|
||||
case 1:
|
||||
drive = m_hdc->subdevice<harddisk_image_device>("0");
|
||||
break;
|
||||
case 2:
|
||||
drive = m_hdc->subdevice<harddisk_image_device>("1");
|
||||
break;
|
||||
case 3:
|
||||
// both (invalid?)
|
||||
drive = nullptr;
|
||||
break;
|
||||
}
|
||||
|
||||
m_hdc->drdy_w(drive != nullptr && drive->exists());
|
||||
}
|
||||
|
||||
WRITE8_MEMBER( apricot_winchester_device::xferd_w )
|
||||
{
|
||||
LOGREGS("xferd_w: %02x\n", data);
|
||||
|
||||
m_hdc->brdy_w(BIT(data, 0));
|
||||
}
|
||||
|
||||
WRITE8_MEMBER( apricot_winchester_device::hbcr_w )
|
||||
{
|
||||
LOGREGS("hbcr_w: %02x\n", data);
|
||||
|
||||
// reset ram pointer on high->low transition
|
||||
if (m_hbcr == 1 && data == 0)
|
||||
m_ram_ptr = 0;
|
||||
|
||||
m_hbcr = BIT(data, 0);
|
||||
}
|
||||
|
||||
WRITE8_MEMBER( apricot_winchester_device::clksel_w )
|
||||
{
|
||||
LOGREGS("clksel_w: %02x\n", data);
|
||||
|
||||
m_clksel = BIT(data, 0);
|
||||
}
|
||||
|
||||
READ8_MEMBER( apricot_winchester_device::data_r )
|
||||
{
|
||||
uint8_t data = 0xff;
|
||||
|
||||
if (m_clksel == 0)
|
||||
{
|
||||
LOGDATA("data_r[%04x]\n", m_ram_ptr);
|
||||
|
||||
data = m_ram[m_ram_ptr];
|
||||
|
||||
// wrap or stop at end?
|
||||
if (m_ram_ptr < 0x1fff)
|
||||
m_ram_ptr++;
|
||||
}
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
WRITE8_MEMBER( apricot_winchester_device::data_w )
|
||||
{
|
||||
if (m_clksel == 0)
|
||||
{
|
||||
LOGDATA("data_w[%04x] = %02x\n", m_ram_ptr, data);
|
||||
|
||||
m_ram[m_ram_ptr] = data;
|
||||
|
||||
// wrap or stop at end?
|
||||
if (m_ram_ptr < 0x1fff)
|
||||
m_ram_ptr++;
|
||||
}
|
||||
}
|
||||
66
src/devices/bus/apricot/expansion/winchester.h
Normal file
66
src/devices/bus/apricot/expansion/winchester.h
Normal file
@ -0,0 +1,66 @@
|
||||
// license:GPL-2.0+
|
||||
// copyright-holders:Dirk Best
|
||||
/***************************************************************************
|
||||
|
||||
ACT Apricot Winchester Controller
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
#ifndef MAME_BUS_APRICOT_WINCHESTER_H
|
||||
#define MAME_BUS_APRICOT_WINCHESTER_H
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "expansion.h"
|
||||
#include "machine/wd1010.h"
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
// ======================> apricot_winchester_device
|
||||
|
||||
class apricot_winchester_device : public device_t, public device_apricot_expansion_card_interface
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
apricot_winchester_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
virtual void device_add_mconfig(machine_config &config) override;
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
|
||||
private:
|
||||
DECLARE_WRITE_LINE_MEMBER(hdc_intrq_w);
|
||||
DECLARE_READ8_MEMBER(hdc_data_r);
|
||||
DECLARE_WRITE8_MEMBER(hdc_data_w);
|
||||
DECLARE_READ8_MEMBER(int_r);
|
||||
template<int N> DECLARE_WRITE8_MEMBER(head_w);
|
||||
template<int N> DECLARE_WRITE8_MEMBER(drive_w);
|
||||
DECLARE_WRITE8_MEMBER(xferd_w);
|
||||
DECLARE_WRITE8_MEMBER(hbcr_w);
|
||||
DECLARE_WRITE8_MEMBER(clksel_w);
|
||||
DECLARE_WRITE8_MEMBER(drvsel2_w);
|
||||
DECLARE_READ8_MEMBER(data_r);
|
||||
DECLARE_WRITE8_MEMBER(data_w);
|
||||
|
||||
void regs(address_map &map);
|
||||
|
||||
required_device<wd1010_device> m_hdc;
|
||||
|
||||
std::unique_ptr<uint8_t[]> m_ram;
|
||||
unsigned m_ram_ptr;
|
||||
int m_int;
|
||||
int m_drive;
|
||||
int m_head;
|
||||
int m_hbcr;
|
||||
int m_clksel;
|
||||
};
|
||||
|
||||
// device type definition
|
||||
DECLARE_DEVICE_TYPE(APRICOT_WINCHESTER, apricot_winchester_device)
|
||||
|
||||
#endif // MAME_BUS_APRICOT_WINCHESTER_H
|
||||
Loading…
Reference in New Issue
Block a user