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-rw-r--r--src/mess/machine/orion.c626
1 files changed, 626 insertions, 0 deletions
diff --git a/src/mess/machine/orion.c b/src/mess/machine/orion.c
new file mode 100644
index 00000000000..e860fc50f26
--- /dev/null
+++ b/src/mess/machine/orion.c
@@ -0,0 +1,626 @@
+/***************************************************************************
+
+ Orion machine driver by Miodrag Milanovic
+
+ 22/04/2008 Orion Pro added
+ 02/04/2008 Preliminary driver.
+
+****************************************************************************/
+
+
+#include "emu.h"
+#include "cpu/i8085/i8085.h"
+#include "imagedev/cassette.h"
+#include "machine/mc146818.h"
+#include "machine/wd17xx.h"
+#include "sound/speaker.h"
+#include "sound/ay8910.h"
+#include "includes/orion.h"
+#include "includes/radio86.h"
+#include "machine/ram.h"
+
+#define SCREEN_WIDTH_384 48
+#define SCREEN_WIDTH_480 60
+#define SCREEN_WIDTH_512 64
+
+
+
+
+
+static READ8_DEVICE_HANDLER (orion_romdisk_porta_r )
+{
+ orion_state *state = device->machine().driver_data<orion_state>();
+ UINT8 *romdisk = state->memregion("maincpu")->base() + 0x10000;
+ return romdisk[state->m_romdisk_msb*256+state->m_romdisk_lsb];
+}
+
+static WRITE8_DEVICE_HANDLER (orion_romdisk_portb_w )
+{
+ orion_state *state = device->machine().driver_data<orion_state>();
+ state->m_romdisk_lsb = data;
+}
+
+static WRITE8_DEVICE_HANDLER (orion_romdisk_portc_w )
+{
+ orion_state *state = device->machine().driver_data<orion_state>();
+ state->m_romdisk_msb = data;
+}
+
+I8255A_INTERFACE( orion128_ppi8255_interface_1)
+{
+ DEVCB_HANDLER(orion_romdisk_porta_r),
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_HANDLER(orion_romdisk_portb_w),
+ DEVCB_NULL,
+ DEVCB_HANDLER(orion_romdisk_portc_w)
+};
+
+
+MACHINE_START( orion128 )
+{
+ orion_state *state = machine.driver_data<orion_state>();
+ state->m_video_mode_mask = 7;
+}
+
+READ8_MEMBER(orion_state::orion128_system_r)
+{
+ return machine().device<i8255_device>("ppi8255_2")->read(space, offset & 3);
+}
+
+WRITE8_MEMBER(orion_state::orion128_system_w)
+{
+ machine().device<i8255_device>("ppi8255_2")->write(space, offset & 3, data);
+}
+
+READ8_MEMBER(orion_state::orion128_romdisk_r)
+{
+ return machine().device<i8255_device>("ppi8255_1")->read(space, offset & 3);
+}
+
+WRITE8_MEMBER(orion_state::orion128_romdisk_w)
+{
+ machine().device<i8255_device>("ppi8255_1")->write(space, offset & 3, data);
+}
+
+static void orion_set_video_mode(running_machine &machine, int width)
+{
+ rectangle visarea(0, width-1, 0, 255);
+ machine.primary_screen->configure(width, 256, visarea, machine.primary_screen->frame_period().attoseconds);
+}
+
+WRITE8_MEMBER(orion_state::orion128_video_mode_w)
+{
+ if ((data & 0x80)!=(m_orion128_video_mode & 0x80))
+ {
+ if ((data & 0x80)==0x80)
+ {
+ if (m_video_mode_mask == 31)
+ {
+ m_orion128_video_width = SCREEN_WIDTH_512;
+ orion_set_video_mode(machine(),512);
+ }
+ else
+ {
+ m_orion128_video_width = SCREEN_WIDTH_480;
+ orion_set_video_mode(machine(),480);
+ }
+ }
+ else
+ {
+ m_orion128_video_width = SCREEN_WIDTH_384;
+ orion_set_video_mode(machine(),384);
+ }
+ }
+
+ m_orion128_video_mode = data;
+}
+
+WRITE8_MEMBER(orion_state::orion128_video_page_w)
+{
+ if (m_orion128_video_page != data)
+ {
+ if ((data & 0x80)!=(m_orion128_video_page & 0x80))
+ {
+ if ((data & 0x80)==0x80)
+ {
+ if (m_video_mode_mask == 31)
+ {
+ m_orion128_video_width = SCREEN_WIDTH_512;
+ orion_set_video_mode(machine(),512);
+ }
+ else
+ {
+ m_orion128_video_width = SCREEN_WIDTH_480;
+ orion_set_video_mode(machine(),480);
+ }
+ }
+ else
+ {
+ m_orion128_video_width = SCREEN_WIDTH_384;
+ orion_set_video_mode(machine(),384);
+ }
+ }
+ }
+ m_orion128_video_page = data;
+}
+
+
+WRITE8_MEMBER(orion_state::orion128_memory_page_w)
+{
+ if (data!=m_orion128_memory_page )
+ {
+ membank("bank1")->set_base(machine().device<ram_device>(RAM_TAG)->pointer() + (data & 3) * 0x10000);
+ m_orion128_memory_page = (data & 3);
+ }
+}
+
+MACHINE_RESET ( orion128 )
+{
+ orion_state *state = machine.driver_data<orion_state>();
+ state->m_orion128_video_page = 0;
+ state->m_orion128_video_mode = 0;
+ state->m_orion128_memory_page = -1;
+ state->membank("bank1")->set_base(state->memregion("maincpu")->base() + 0xf800);
+ state->membank("bank2")->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + 0xf000);
+ state->m_orion128_video_width = SCREEN_WIDTH_384;
+ orion_set_video_mode(machine,384);
+ radio86_init_keyboard(machine);
+}
+
+WRITE8_MEMBER(orion_state::orion_disk_control_w)
+{
+ device_t *fdc = machine().device("wd1793");
+
+ wd17xx_set_side(fdc,((data & 0x10) >> 4) ^ 1);
+ wd17xx_set_drive(fdc,data & 3);
+}
+
+READ8_MEMBER(orion_state::orion128_floppy_r)
+{
+ device_t *fdc = machine().device("wd1793");
+
+ switch(offset)
+ {
+ case 0x0 :
+ case 0x10 : return wd17xx_status_r(fdc,0);
+ case 0x1 :
+ case 0x11 : return wd17xx_track_r(fdc,0);
+ case 0x2 :
+ case 0x12 : return wd17xx_sector_r(fdc,0);
+ case 0x3 :
+ case 0x13 : return wd17xx_data_r(fdc,0);
+ }
+ return 0xff;
+}
+
+WRITE8_MEMBER(orion_state::orion128_floppy_w)
+{
+ device_t *fdc = machine().device("wd1793");
+
+ switch(offset)
+ {
+ case 0x0 :
+ case 0x10 : wd17xx_command_w(fdc,0,data); break;
+ case 0x1 :
+ case 0x11 : wd17xx_track_w(fdc,0,data);break;
+ case 0x2 :
+ case 0x12 : wd17xx_sector_w(fdc,0,data);break;
+ case 0x3 :
+ case 0x13 : wd17xx_data_w(fdc,0,data);break;
+ case 0x4 :
+ case 0x14 :
+ case 0x20 : orion_disk_control_w(space, offset, data);break;
+ }
+}
+READ8_MEMBER(orion_state::orionz80_floppy_rtc_r)
+{
+ if ((offset >= 0x60) && (offset <= 0x6f))
+ {
+ return machine().device<mc146818_device>("rtc")->read(space,offset-0x60);
+ }
+ else
+ {
+ return orion128_floppy_r(space,offset);
+ }
+}
+
+WRITE8_MEMBER(orion_state::orionz80_floppy_rtc_w)
+{
+ if ((offset >= 0x60) && (offset <= 0x6f))
+ {
+ machine().device<mc146818_device>("rtc")->write(space,offset-0x60,data);
+ }
+ else
+ {
+ orion128_floppy_w(space,offset,data);
+ }
+}
+
+
+MACHINE_START( orionz80 )
+{
+ orion_state *state = machine.driver_data<orion_state>();
+ state->m_video_mode_mask = 7;
+}
+
+WRITE8_MEMBER(orion_state::orionz80_sound_w)
+{
+ device_t *speaker = machine().device(SPEAKER_TAG);
+ if (m_speaker == 0)
+ {
+ m_speaker = data;
+ }
+ else
+ {
+ m_speaker = 0 ;
+ }
+ speaker_level_w(speaker,m_speaker);
+
+}
+
+WRITE8_MEMBER(orion_state::orionz80_sound_fe_w)
+{
+ device_t *speaker = machine().device(SPEAKER_TAG);
+ speaker_level_w(speaker,(data>>4) & 0x01);
+}
+
+
+static void orionz80_switch_bank(running_machine &machine)
+{
+ orion_state *state = machine.driver_data<orion_state>();
+ UINT8 bank_select;
+ UINT8 segment_select;
+ address_space *space = machine.device("maincpu")->memory().space(AS_PROGRAM);
+
+ bank_select = (state->m_orionz80_dispatcher & 0x0c) >> 2;
+ segment_select = state->m_orionz80_dispatcher & 0x03;
+
+ space->install_write_bank(0x0000, 0x3fff, "bank1");
+ if ((state->m_orionz80_dispatcher & 0x80)==0)
+ { // dispatcher on
+ state->membank("bank1")->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + 0x10000 * bank_select + segment_select * 0x4000 );
+ }
+ else
+ { // dispatcher off
+ state->membank("bank1")->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + 0x10000 * state->m_orionz80_memory_page);
+ }
+
+ state->membank("bank2")->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + 0x4000 + 0x10000 * state->m_orionz80_memory_page);
+
+ if ((state->m_orionz80_dispatcher & 0x20) == 0)
+ {
+ space->install_write_handler(0xf400, 0xf4ff, write8_delegate(FUNC(orion_state::orion128_system_w),state));
+ space->install_write_handler(0xf500, 0xf5ff, write8_delegate(FUNC(orion_state::orion128_romdisk_w),state));
+ space->install_write_handler(0xf700, 0xf7ff, write8_delegate(FUNC(orion_state::orionz80_floppy_rtc_w),state));
+ space->install_read_handler(0xf400, 0xf4ff, read8_delegate(FUNC(orion_state::orion128_system_r),state));
+ space->install_read_handler(0xf500, 0xf5ff, read8_delegate(FUNC(orion_state::orion128_romdisk_r),state));
+ space->install_read_handler(0xf700, 0xf7ff, read8_delegate(FUNC(orion_state::orionz80_floppy_rtc_r),state));
+
+ space->install_write_handler(0xf800, 0xf8ff, write8_delegate(FUNC(orion_state::orion128_video_mode_w),state));
+ space->install_write_handler(0xf900, 0xf9ff, write8_delegate(FUNC(orion_state::orionz80_memory_page_w),state));
+ space->install_write_handler(0xfa00, 0xfaff, write8_delegate(FUNC(orion_state::orion128_video_page_w),state));
+ space->install_write_handler(0xfb00, 0xfbff, write8_delegate(FUNC(orion_state::orionz80_dispatcher_w),state));
+ space->unmap_write(0xfc00, 0xfeff);
+ space->install_write_handler(0xff00, 0xffff, write8_delegate(FUNC(orion_state::orionz80_sound_w),state));
+
+ state->membank("bank3")->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + 0xf000);
+ state->membank("bank5")->set_base(machine.root_device().memregion("maincpu")->base() + 0xf800);
+
+ }
+ else
+ {
+ /* if it is full memory access */
+ state->membank("bank3")->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + 0xf000 + 0x10000 * state->m_orionz80_memory_page);
+ state->membank("bank4")->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + 0xf400 + 0x10000 * state->m_orionz80_memory_page);
+ state->membank("bank5")->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + 0xf800 + 0x10000 * state->m_orionz80_memory_page);
+ }
+}
+
+WRITE8_MEMBER(orion_state::orionz80_memory_page_w)
+{
+ m_orionz80_memory_page = data & 7;
+ orionz80_switch_bank(machine());
+}
+
+WRITE8_MEMBER(orion_state::orionz80_dispatcher_w)
+{
+ m_orionz80_dispatcher = data;
+ orionz80_switch_bank(machine());
+}
+
+MACHINE_RESET ( orionz80 )
+{
+ orion_state *state = machine.driver_data<orion_state>();
+ address_space *space = machine.device("maincpu")->memory().space(AS_PROGRAM);
+
+ space->unmap_write(0x0000, 0x3fff);
+ space->install_write_bank(0x4000, 0xefff, "bank2");
+ space->install_write_bank(0xf000, 0xf3ff, "bank3");
+
+ space->install_write_handler(0xf400, 0xf4ff, write8_delegate(FUNC(orion_state::orion128_system_w),state));
+ space->install_write_handler(0xf500, 0xf5ff, write8_delegate(FUNC(orion_state::orion128_romdisk_w),state));
+ space->install_write_handler(0xf700, 0xf7ff, write8_delegate(FUNC(orion_state::orionz80_floppy_rtc_w),state));
+ space->install_read_handler(0xf400, 0xf4ff, read8_delegate(FUNC(orion_state::orion128_system_r),state));
+ space->install_read_handler(0xf500, 0xf5ff, read8_delegate(FUNC(orion_state::orion128_romdisk_r),state));
+ space->install_read_handler(0xf700, 0xf7ff, read8_delegate(FUNC(orion_state::orionz80_floppy_rtc_r),state));
+
+ space->install_write_handler(0xf800, 0xf8ff, write8_delegate(FUNC(orion_state::orion128_video_mode_w),state));
+ space->install_write_handler(0xf900, 0xf9ff, write8_delegate(FUNC(orion_state::orionz80_memory_page_w),state));
+ space->install_write_handler(0xfa00, 0xfaff, write8_delegate(FUNC(orion_state::orion128_video_page_w),state));
+ space->install_write_handler(0xfb00, 0xfbff, write8_delegate(FUNC(orion_state::orionz80_dispatcher_w),state));
+ space->unmap_write(0xfc00, 0xfeff);
+ space->install_write_handler(0xff00, 0xffff, write8_delegate(FUNC(orion_state::orionz80_sound_w),state));
+
+
+ state->membank("bank1")->set_base(machine.root_device().memregion("maincpu")->base() + 0xf800);
+ state->membank("bank2")->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + 0x4000);
+ state->membank("bank3")->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + 0xf000);
+ state->membank("bank5")->set_base(state->memregion("maincpu")->base() + 0xf800);
+
+
+ state->m_orion128_video_page = 0;
+ state->m_orion128_video_mode = 0;
+ state->m_orionz80_memory_page = 0;
+ state->m_orionz80_dispatcher = 0;
+ state->m_speaker = 0;
+ state->m_orion128_video_width = SCREEN_WIDTH_384;
+ orion_set_video_mode(machine,384);
+ radio86_init_keyboard(machine);
+}
+
+INTERRUPT_GEN( orionz80_interrupt )
+{
+ orion_state *state = device->machine().driver_data<orion_state>();
+ if ((state->m_orionz80_dispatcher & 0x40)==0x40)
+ {
+ device_set_input_line(device, 0, HOLD_LINE);
+ }
+}
+
+READ8_MEMBER(orion_state::orionz80_io_r)
+{
+ if (offset == 0xFFFD)
+ {
+ return ay8910_r (machine().device("ay8912"), 0);
+ }
+ return 0xff;
+}
+
+WRITE8_MEMBER(orion_state::orionz80_io_w)
+{
+ switch (offset & 0xff)
+ {
+ case 0xf8 : orion128_video_mode_w(space,0,data);break;
+ case 0xf9 : orionz80_memory_page_w(space,0,data);break;
+ case 0xfa : orion128_video_page_w(space,0,data);break;
+ case 0xfb : orionz80_dispatcher_w(space,0,data);break;
+ case 0xfe : orionz80_sound_fe_w(space,0,data);break;
+ case 0xff : orionz80_sound_w(space,0,data);break;
+ }
+ switch(offset)
+ {
+ case 0xfffd : ay8910_address_w(machine().device("ay8912"), 0, data);
+ break;
+ case 0xbffd :
+ case 0xbefd : ay8910_data_w(machine().device("ay8912"), 0, data);
+ break;
+ }
+}
+
+
+
+
+
+
+
+static void orionpro_bank_switch(running_machine &machine)
+{
+ orion_state *state = machine.driver_data<orion_state>();
+ address_space *space = machine.device("maincpu")->memory().space(AS_PROGRAM);
+ int page = state->m_orionpro_page & 7; // we have only 8 pages
+ int is128 = (state->m_orionpro_dispatcher & 0x80) ? 1 : 0;
+ UINT8 *ram = machine.device<ram_device>(RAM_TAG)->pointer();
+
+ if (is128==1)
+ {
+ page = state->m_orionpro_128_page & 7;
+ }
+ space->install_write_bank(0x0000, 0x1fff, "bank1");
+ space->install_write_bank(0x2000, 0x3fff, "bank2");
+ space->install_write_bank(0x4000, 0x7fff, "bank3");
+ space->install_write_bank(0x8000, 0xbfff, "bank4");
+ space->install_write_bank(0xc000, 0xefff, "bank5");
+ space->install_write_bank(0xf000, 0xf3ff, "bank6");
+ space->install_write_bank(0xf400, 0xf7ff, "bank7");
+ space->install_write_bank(0xf800, 0xffff, "bank8");
+
+
+ if ((state->m_orionpro_dispatcher & 0x01)==0x00)
+ { // RAM0 segment disabled
+ state->membank("bank1")->set_base(ram + 0x10000 * page);
+ state->membank("bank2")->set_base(ram + 0x10000 * page + 0x2000);
+ }
+ else
+ {
+ state->membank("bank1")->set_base(ram + (state->m_orionpro_ram0_segment & 31) * 0x4000);
+ state->membank("bank2")->set_base(ram + (state->m_orionpro_ram0_segment & 31) * 0x4000 + 0x2000);
+ }
+ if ((state->m_orionpro_dispatcher & 0x10)==0x10)
+ { // ROM1 enabled
+ space->unmap_write(0x0000, 0x1fff);
+ state->membank("bank1")->set_base(machine.root_device().memregion("maincpu")->base() + 0x20000);
+ }
+ if ((state->m_orionpro_dispatcher & 0x08)==0x08)
+ { // ROM2 enabled
+ space->unmap_write(0x2000, 0x3fff);
+ state->membank("bank2")->set_base(machine.root_device().memregion("maincpu")->base() + 0x22000 + (state->m_orionpro_rom2_segment & 7) * 0x2000);
+ }
+
+ if ((state->m_orionpro_dispatcher & 0x02)==0x00)
+ { // RAM1 segment disabled
+ state->membank("bank3")->set_base(ram + 0x10000 * page + 0x4000);
+ }
+ else
+ {
+ state->membank("bank3")->set_base(ram + (state->m_orionpro_ram1_segment & 31) * 0x4000);
+ }
+
+ if ((state->m_orionpro_dispatcher & 0x04)==0x00)
+ { // RAM2 segment disabled
+ state->membank("bank4")->set_base(ram + 0x10000 * page + 0x8000);
+ }
+ else
+ {
+ state->membank("bank4")->set_base(ram + (state->m_orionpro_ram2_segment & 31) * 0x4000);
+ }
+
+ state->membank("bank5")->set_base(ram + 0x10000 * page + 0xc000);
+
+ if (is128)
+ {
+ state->membank("bank6")->set_base(ram + 0x10000 * 0 + 0xf000);
+
+ space->install_write_handler(0xf400, 0xf4ff, write8_delegate(FUNC(orion_state::orion128_system_w),state));
+ space->install_write_handler(0xf500, 0xf5ff, write8_delegate(FUNC(orion_state::orion128_romdisk_w),state));
+ space->unmap_write(0xf600, 0xf6ff);
+ space->install_write_handler(0xf700, 0xf7ff, write8_delegate(FUNC(orion_state::orion128_floppy_w),state));
+ space->install_read_handler(0xf400, 0xf4ff, read8_delegate(FUNC(orion_state::orion128_system_r),state));
+ space->install_read_handler(0xf500, 0xf5ff, read8_delegate(FUNC(orion_state::orion128_romdisk_r),state));
+ space->unmap_read(0xf600, 0xf6ff);
+ space->install_read_handler(0xf700, 0xf7ff, read8_delegate(FUNC(orion_state::orion128_floppy_r),state));
+
+ space->install_write_handler(0xf800, 0xf8ff, write8_delegate(FUNC(orion_state::orion128_video_mode_w),state));
+ space->install_write_handler(0xf900, 0xf9ff, write8_delegate(FUNC(orion_state::orionpro_memory_page_w),state));
+ space->install_write_handler(0xfa00, 0xfaff, write8_delegate(FUNC(orion_state::orion128_video_page_w),state));
+ space->unmap_write(0xfb00, 0xfeff);
+ space->install_write_handler(0xff00, 0xffff, write8_delegate(FUNC(orion_state::orionz80_sound_w),state));
+
+
+ state->membank("bank8")->set_base(ram + 0x10000 * 0 + 0xf800);
+ }
+ else
+ {
+ if ((state->m_orionpro_dispatcher & 0x40)==0x40)
+ { // FIX F000 enabled
+ state->membank("bank6")->set_base(ram + 0x10000 * 0 + 0xf000);
+ state->membank("bank7")->set_base(ram + 0x10000 * 0 + 0xf400);
+ state->membank("bank8")->set_base(ram + 0x10000 * 0 + 0xf800);
+ }
+ else
+ {
+ state->membank("bank6")->set_base(ram + 0x10000 * page + 0xf000);
+ state->membank("bank7")->set_base(ram + 0x10000 * page + 0xf400);
+ state->membank("bank8")->set_base(ram + 0x10000 * page + 0xf800);
+ }
+ }
+}
+
+WRITE8_MEMBER(orion_state::orionpro_memory_page_w)
+{
+ m_orionpro_128_page = data;
+ orionpro_bank_switch(machine());
+}
+
+MACHINE_RESET ( orionpro )
+{
+ orion_state *state = machine.driver_data<orion_state>();
+ radio86_init_keyboard(machine);
+
+ state->m_orion128_video_page = 0;
+ state->m_orion128_video_mode = 0;
+ state->m_orionpro_ram0_segment = 0;
+ state->m_orionpro_ram1_segment = 0;
+ state->m_orionpro_ram2_segment = 0;
+
+ state->m_orionpro_page = 0;
+ state->m_orionpro_128_page = 0;
+ state->m_orionpro_rom2_segment = 0;
+
+ state->m_orionpro_dispatcher = 0x50;
+ orionpro_bank_switch(machine);
+
+ state->m_speaker = 0;
+ state->m_orion128_video_width = SCREEN_WIDTH_384;
+ orion_set_video_mode(machine,384);
+
+ state->m_video_mode_mask = 31;
+ state->m_orionpro_pseudo_color = 0;
+}
+
+READ8_MEMBER(orion_state::orionpro_io_r)
+{
+ device_t *fdc = machine().device("wd1793");
+
+ switch (offset & 0xff)
+ {
+ case 0x00 : return 0x56;
+ case 0x04 : return m_orionpro_ram0_segment;
+ case 0x05 : return m_orionpro_ram1_segment;
+ case 0x06 : return m_orionpro_ram2_segment;
+ case 0x08 : return m_orionpro_page;
+ case 0x09 : return m_orionpro_rom2_segment;
+ case 0x0a : return m_orionpro_dispatcher;
+ case 0x10 : return wd17xx_status_r(fdc,0);
+ case 0x11 : return wd17xx_track_r(fdc,0);
+ case 0x12 : return wd17xx_sector_r(fdc,0);
+ case 0x13 : return wd17xx_data_r(fdc,0);
+ case 0x18 :
+ case 0x19 :
+ case 0x1a :
+ case 0x1b :
+ return orion128_system_r(space,(offset & 0xff)-0x18);
+ case 0x28 : return orion128_romdisk_r(space,0);
+ case 0x29 : return orion128_romdisk_r(space,1);
+ case 0x2a : return orion128_romdisk_r(space,2);
+ case 0x2b : return orion128_romdisk_r(space,3);
+ }
+ if (offset == 0xFFFD)
+ {
+ return ay8910_r (machine().device("ay8912"), 0);
+ }
+ return 0xff;
+}
+
+WRITE8_MEMBER(orion_state::orionpro_io_w)
+{
+ device_t *fdc = machine().device("wd1793");
+
+ switch (offset & 0xff)
+ {
+ case 0x04 : m_orionpro_ram0_segment = data; orionpro_bank_switch(machine()); break;
+ case 0x05 : m_orionpro_ram1_segment = data; orionpro_bank_switch(machine()); break;
+ case 0x06 : m_orionpro_ram2_segment = data; orionpro_bank_switch(machine()); break;
+ case 0x08 : m_orionpro_page = data; orionpro_bank_switch(machine()); break;
+ case 0x09 : m_orionpro_rom2_segment = data; orionpro_bank_switch(machine()); break;
+ case 0x0a : m_orionpro_dispatcher = data; orionpro_bank_switch(machine()); break;
+ case 0x10 : wd17xx_command_w(fdc,0,data); break;
+ case 0x11 : wd17xx_track_w(fdc,0,data);break;
+ case 0x12 : wd17xx_sector_w(fdc,0,data);break;
+ case 0x13 : wd17xx_data_w(fdc,0,data);break;
+ case 0x14 : orion_disk_control_w(space, 9, data);break;
+ case 0x18 :
+ case 0x19 :
+ case 0x1a :
+ case 0x1b :
+ orion128_system_w(space,(offset & 0xff)-0x18,data); break;
+ case 0x28 : orion128_romdisk_w(space,0,data); break;
+ case 0x29 : orion128_romdisk_w(space,1,data); break;
+ case 0x2a : orion128_romdisk_w(space,2,data); break;
+ case 0x2b : orion128_romdisk_w(space,3,data); break;
+ case 0xf8 : orion128_video_mode_w(space,0,data);break;
+ case 0xf9 : m_orionpro_128_page = data; orionpro_bank_switch(machine()); break;
+ case 0xfa : orion128_video_page_w(space,0,data);break;
+ case 0xfc : m_orionpro_pseudo_color = data;break;
+ case 0xfe : orionz80_sound_fe_w(space,0,data);break;
+ case 0xff : orionz80_sound_w(space,0,data);break;
+ }
+ switch(offset)
+ {
+ case 0xfffd : ay8910_address_w(machine().device("ay8912"), 0, data);
+ break;
+ case 0xbffd :
+ case 0xbefd : ay8910_data_w(machine().device("ay8912"), 0, data);
+ break;
+ }
+}