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Diffstat (limited to 'src/mame/machine/pk8020.c')
-rw-r--r--src/mame/machine/pk8020.c908
1 files changed, 908 insertions, 0 deletions
diff --git a/src/mame/machine/pk8020.c b/src/mame/machine/pk8020.c
new file mode 100644
index 00000000000..e065aac7fd7
--- /dev/null
+++ b/src/mame/machine/pk8020.c
@@ -0,0 +1,908 @@
+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic
+/***************************************************************************
+
+ PK-8020 driver by Miodrag Milanovic
+ based on work of Sergey Erokhin from pk8020.narod.ru
+
+ 18/07/2008 Preliminary driver.
+
+****************************************************************************/
+
+
+#include "emu.h"
+#include "includes/pk8020.h"
+#include "cpu/i8085/i8085.h"
+#include "imagedev/flopdrv.h"
+
+
+READ8_MEMBER(pk8020_state::keyboard_r)
+{
+ UINT8 retVal=0x00;
+ UINT8 line = 0;
+ if (offset & 0x100) line=8;
+
+ if (offset & 0x0001) retVal|=m_io_port[line]->read();
+ line++;
+ if (offset & 0x0002) retVal|=m_io_port[line]->read();
+ line++;
+ if (offset & 0x0004) retVal|=m_io_port[line]->read();
+ line++;
+ if (offset & 0x0008) retVal|=m_io_port[line]->read();
+ line++;
+ if (offset & 0x0010) retVal|=m_io_port[line]->read();
+ line++;
+ if (offset & 0x0020) retVal|=m_io_port[line]->read();
+ line++;
+ if (offset & 0x0040) retVal|=m_io_port[line]->read();
+ line++;
+ if (offset & 0x0080) retVal|=m_io_port[line]->read();
+ line++;
+
+ return retVal;
+}
+
+READ8_MEMBER(pk8020_state::sysreg_r)
+{
+ return m_ram->pointer()[offset];
+}
+WRITE8_MEMBER(pk8020_state::sysreg_w)
+{
+ if (BIT(offset,7)==0) {
+ pk8020_set_bank(data >> 2);
+ } else if (BIT(offset,6)==0) {
+ // Color
+ m_color = data;
+ } else if (BIT(offset,2)==0) {
+ // Palette set
+ UINT8 number = data & 0x0f;
+ UINT8 color = data >> 4;
+ UINT8 i = (color & 0x08) ? 0x3F : 0;
+ UINT8 r = ((color & 0x04) ? 0xC0 : 0) + i;
+ UINT8 g = ((color & 0x02) ? 0xC0 : 0) + i;
+ UINT8 b = ((color & 0x01) ? 0xC0 : 0) + i;
+ m_palette->set_pen_color( number, rgb_t(r,g,b) );
+ }
+}
+
+READ8_MEMBER(pk8020_state::text_r)
+{
+ if (m_attr == 3) m_text_attr=m_ram->pointer()[0x40400+offset];
+ return m_ram->pointer()[0x40000+offset];
+}
+
+WRITE8_MEMBER(pk8020_state::text_w)
+{
+ UINT8 *ram = m_ram->pointer();
+ ram[0x40000+offset] = data;
+ switch (m_attr) {
+ case 0: break;
+ case 1: ram[0x40400+offset]=0x01;break;
+ case 2: ram[0x40400+offset]=0x00;break;
+ case 3: ram[0x40400+offset]=m_text_attr;break;
+ }
+}
+
+READ8_MEMBER(pk8020_state::gzu_r)
+{
+ UINT8 *addr = m_ram->pointer() + 0x10000 + (m_video_page_access * 0xC000);
+ UINT8 p0 = addr[offset];
+ UINT8 p1 = addr[offset + 0x4000];
+ UINT8 p2 = addr[offset + 0x8000];
+ UINT8 retVal = 0;
+ if(m_color & 0x80) {
+ // Color mode
+ if (!(m_color & 0x10)) {
+ p0 ^= 0xff;
+ }
+ if (!(m_color & 0x20)) {
+ p1 ^= 0xff;
+ }
+ if (!(m_color & 0x40)) {
+ p2 ^= 0xff;
+ }
+ retVal = (p0 & p1 & p2) ^ 0xff;
+ } else {
+ // Plane mode
+ if (m_color & 0x10) {
+ retVal |= p0;
+ }
+ if (m_color & 0x20) {
+ retVal |= p1;
+ }
+ if (m_color & 0x40) {
+ retVal |= p2;
+ }
+ }
+ return retVal;
+}
+
+WRITE8_MEMBER(pk8020_state::gzu_w)
+{
+ UINT8 *addr = m_ram->pointer() + 0x10000 + (m_video_page_access * 0xC000);
+ UINT8 *plane_0 = addr;
+ UINT8 *plane_1 = addr + 0x4000;
+ UINT8 *plane_2 = addr + 0x8000;
+
+ if(m_color & 0x80)
+ {
+ // Color mode
+ plane_0[offset] = (plane_0[offset] & ~data) | ((m_color & 2) ? data : 0);
+ plane_1[offset] = (plane_1[offset] & ~data) | ((m_color & 4) ? data : 0);
+ plane_2[offset] = (plane_2[offset] & ~data) | ((m_color & 8) ? data : 0);
+ } else {
+ // Plane mode
+ UINT8 mask = (m_color & 1) ? data : 0;
+ if (!(m_color & 0x02)) {
+ plane_0[offset] = (plane_0[offset] & ~data) | mask;
+ }
+ if (!(m_color & 0x04)) {
+ plane_1[offset] = (plane_1[offset] & ~data) | mask;
+ }
+ if (!(m_color & 0x08)) {
+ plane_2[offset] = (plane_2[offset] & ~data) | mask;
+ }
+ }
+}
+
+READ8_MEMBER(pk8020_state::devices_r)
+{
+ switch(offset & 0x38)
+ {
+ case 0x00: return m_pit8253->read(space, offset & 3);
+ case 0x08: return m_ppi8255_3->read(space,offset & 3);
+ case 0x10: switch(offset & 1) {
+ case 0 : return m_rs232->data_r(space,0);
+ case 1 : return m_rs232->status_r(space,0);
+ }
+ break;
+ case 0x18: return m_wd1793->read(space, offset & 0x03);
+ case 0x20: switch(offset & 1) {
+ case 0 : return m_lan->data_r(space,0);
+ case 1 : return m_lan->status_r(space,0);
+ }
+ break;
+ case 0x28: return m_pic8259->read(space, offset & 1);
+ case 0x30: return m_ppi8255_2->read(space,offset & 3);
+ case 0x38: return m_ppi8255_1->read(space,offset & 3);
+ }
+ return 0xff;
+}
+
+WRITE8_MEMBER(pk8020_state::devices_w)
+{
+ switch(offset & 0x38)
+ {
+ case 0x00: m_pit8253->write(space, offset & 3, data); break;
+ case 0x08: m_ppi8255_3->write(space,offset & 3,data); break;
+ case 0x10: switch(offset & 1) {
+ case 0 : m_rs232->data_w(space,0,data); break;
+ case 1 : m_rs232->control_w(space,0,data); break;
+ }
+ break;
+ case 0x18:
+ m_wd1793->write(space, offset & 0x03, data);
+ break;
+ case 0x20: switch(offset & 1) {
+ case 0 : m_lan->data_w(space,0,data); break;
+ case 1 : m_lan->control_w(space,0,data); break;
+ }
+ break;
+ case 0x28: m_pic8259->write(space, offset & 1,data);break;
+ case 0x30: m_ppi8255_2->write(space,offset & 3,data); break;
+ case 0x38: m_ppi8255_1->write(space,offset & 3,data); break;
+ }
+}
+
+void pk8020_state::pk8020_set_bank(UINT8 data)
+{
+ address_space &space = m_maincpu->space(AS_PROGRAM);
+ UINT8 *mem = m_region_maincpu->base();
+ UINT8 *ram = m_ram->pointer();
+
+ switch(data & 0x1F) {
+ case 0x00 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x37ff, "bank1");
+ space.install_write_bank(0x0000, 0x37ff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // Keyboard
+ space.install_read_handler (0x3800, 0x39ff, read8_delegate(FUNC(pk8020_state::keyboard_r),this));
+ space.install_write_bank(0x3800, 0x39ff, "bank3");
+ membank("bank3")->set_base(ram + 0x3800);
+ // System reg
+ space.install_read_handler (0x3a00, 0x3aff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0x3a00, 0x3aff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Devices
+ space.install_read_handler (0x3b00, 0x3bff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0x3b00, 0x3bff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // Text Video Memory
+ space.install_read_handler (0x3c00, 0x3fff, read8_delegate(FUNC(pk8020_state::text_r),this));
+ space.install_write_handler(0x3c00, 0x3fff, write8_delegate(FUNC(pk8020_state::text_w),this));
+ // RAM
+ space.install_read_bank (0x4000, 0xffff, "bank4");
+ space.install_write_bank(0x4000, 0xffff, "bank5");
+ membank("bank4")->set_base(ram + 0x4000);
+ membank("bank5")->set_base(ram + 0x4000);
+ }
+ break;
+ case 0x01 : {
+ // ROM
+ space.install_read_bank (0x0000, 0x1fff, "bank1");
+ space.install_write_bank(0x0000, 0x1fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x2000, 0xffff, "bank3");
+ space.install_write_bank(0x2000, 0xffff, "bank4");
+ membank("bank3")->set_base(ram + 0x2000);
+ membank("bank4")->set_base(ram + 0x2000);
+ }
+ break;
+ case 0x02 : {
+ // ROM
+ space.install_read_bank (0x0000, 0x3fff, "bank1");
+ space.install_write_bank(0x0000, 0x3fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x4000, 0xffff, "bank3");
+ space.install_write_bank(0x4000, 0xffff, "bank4");
+ membank("bank3")->set_base(ram + 0x4000);
+ membank("bank4")->set_base(ram + 0x4000);
+ }
+ break;
+ case 0x03 : {
+ // RAM
+ space.install_read_bank (0x0000, 0xffff, "bank1");
+ space.install_write_bank(0x0000, 0xffff, "bank2");
+ membank("bank1")->set_base(ram);
+ membank("bank2")->set_base(ram);
+ }
+ break;
+ case 0x04 :
+ case 0x05 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x1fff, "bank1");
+ space.install_write_bank(0x0000, 0x1fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x2000, 0xf7ff, "bank3");
+ space.install_write_bank(0x2000, 0xf7ff, "bank4");
+ membank("bank3")->set_base(ram + 0x2000);
+ membank("bank4")->set_base(ram + 0x2000);
+ // Keyboard
+ space.install_read_handler (0xf800, 0xf9ff, read8_delegate(FUNC(pk8020_state::keyboard_r),this));
+ space.install_write_bank(0xf800, 0xf9ff, "bank5");
+ membank("bank5")->set_base(ram + 0xf800);
+ // System reg
+ space.install_read_handler (0xfa00, 0xfaff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xfa00, 0xfaff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Devices
+ space.install_read_handler (0xfb00, 0xfbff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfb00, 0xfbff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // Text Video Memory
+ space.install_read_handler (0xfc00, 0xffff, read8_delegate(FUNC(pk8020_state::text_r),this));
+ space.install_write_handler(0xfc00, 0xffff, write8_delegate(FUNC(pk8020_state::text_w),this));
+ }
+ break;
+ case 0x06 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x3fff, "bank1");
+ space.install_write_bank(0x0000, 0x3fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x4000, 0xf7ff, "bank3");
+ space.install_write_bank(0x4000, 0xf7ff, "bank4");
+ membank("bank3")->set_base(ram + 0x4000);
+ membank("bank4")->set_base(ram + 0x4000);
+ // Keyboard
+ space.install_read_handler (0xf800, 0xf9ff, read8_delegate(FUNC(pk8020_state::keyboard_r),this));
+ space.install_write_bank(0xf800, 0xf9ff, "bank5");
+ membank("bank5")->set_base(ram + 0xf800);
+ // System reg
+ space.install_read_handler (0xfa00, 0xfaff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xfa00, 0xfaff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Devices
+ space.install_read_handler (0xfb00, 0xfbff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfb00, 0xfbff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // Text Video Memory
+ space.install_read_handler (0xfc00, 0xffff, read8_delegate(FUNC(pk8020_state::text_r),this));
+ space.install_write_handler(0xfc00, 0xffff, write8_delegate(FUNC(pk8020_state::text_w),this));
+ }
+ break;
+ case 0x07 :
+ {
+ // RAM
+ space.install_read_bank (0x0000, 0xf7ff, "bank1");
+ space.install_write_bank(0x0000, 0xf7ff, "bank2");
+ membank("bank1")->set_base(ram);
+ membank("bank2")->set_base(ram);
+ // Keyboard
+ space.install_read_handler (0xf800, 0xf9ff, read8_delegate(FUNC(pk8020_state::keyboard_r),this));
+ space.install_write_bank(0xf800, 0xf9ff, "bank3");
+ membank("bank3")->set_base(ram + 0xf800);
+ // System reg
+ space.install_read_handler (0xfa00, 0xfaff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xfa00, 0xfaff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Devices
+ space.install_read_handler (0xfb00, 0xfbff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfb00, 0xfbff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // Text Video Memory
+ space.install_read_handler (0xfc00, 0xffff, read8_delegate(FUNC(pk8020_state::text_r),this));
+ space.install_write_handler(0xfc00, 0xffff, write8_delegate(FUNC(pk8020_state::text_w),this));
+ }
+ break;
+ case 0x08 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x3fff, "bank1");
+ space.install_write_bank(0x0000, 0x3fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // Keyboard
+ space.install_read_handler (0x3800, 0x39ff, read8_delegate(FUNC(pk8020_state::keyboard_r),this));
+ space.install_write_bank(0x3800, 0x39ff, "bank3");
+ membank("bank3")->set_base(ram + 0x3800);
+ // System reg
+ space.install_read_handler (0x3a00, 0x3aff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0x3a00, 0x3aff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Devices
+ space.install_read_handler (0x3b00, 0x3bff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0x3b00, 0x3bff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // Text Video Memory
+ space.install_read_handler (0x3c00, 0x3fff, read8_delegate(FUNC(pk8020_state::text_r),this));
+ space.install_write_handler(0x3c00, 0x3fff, write8_delegate(FUNC(pk8020_state::text_w),this));
+ // RAM
+ space.install_read_bank (0x4000, 0xbfff, "bank4");
+ space.install_write_bank(0x4000, 0xbfff, "bank5");
+ membank("bank4")->set_base(ram + 0x4000);
+ membank("bank5")->set_base(ram + 0x4000);
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+
+ }
+ break;
+ case 0x09 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x1fff, "bank1");
+ space.install_write_bank(0x0000, 0x1fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x2000, 0xbfff, "bank3");
+ space.install_write_bank(0x2000, 0xbfff, "bank4");
+ membank("bank3")->set_base(ram + 0x2000);
+ membank("bank4")->set_base(ram + 0x2000);
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+ case 0x0A :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x3fff, "bank1");
+ space.install_write_bank(0x0000, 0x3fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x4000, 0xbfff, "bank3");
+ space.install_write_bank(0x4000, 0xbfff, "bank4");
+ membank("bank3")->set_base(ram + 0x4000);
+ membank("bank4")->set_base(ram + 0x4000);
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+ case 0x0B :
+ {
+ // RAM
+ space.install_read_bank (0x0000, 0xbfff, "bank1");
+ space.install_write_bank(0x0000, 0xbfff, "bank2");
+ membank("bank1")->set_base(ram + 0x0000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+ case 0x0C :
+ case 0x0D :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x1fff, "bank1");
+ space.install_write_bank(0x0000, 0x1fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x2000, 0x3fff, "bank3");
+ space.install_write_bank(0x2000, 0x3fff, "bank4");
+ membank("bank3")->set_base(ram + 0x2000);
+ membank("bank4")->set_base(ram + 0x2000);
+ // Video RAM
+ space.install_read_handler (0x4000, 0x7fff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0x4000, 0x7fff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ // RAM
+ space.install_read_bank (0x8000, 0xfdff, "bank5");
+ space.install_write_bank(0x8000, 0xfdff, "bank6");
+ membank("bank5")->set_base(ram + 0x8000);
+ membank("bank6")->set_base(ram + 0x8000);
+ // Devices
+ space.install_read_handler (0xfe00, 0xfeff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfe00, 0xfeff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // System reg
+ space.install_read_handler (0xff00, 0xffff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xff00, 0xffff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ }
+ break;
+ case 0x0E :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x3fff, "bank1");
+ space.install_write_bank(0x0000, 0x3fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // Video RAM
+ space.install_read_handler (0x4000, 0x7fff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0x4000, 0x7fff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ // RAM
+ space.install_read_bank (0x8000, 0xfdff, "bank5");
+ space.install_write_bank(0x8000, 0xfdff, "bank6");
+ membank("bank5")->set_base(ram + 0x8000);
+ membank("bank6")->set_base(ram + 0x8000);
+ // Devices
+ space.install_read_handler (0xfe00, 0xfeff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfe00, 0xfeff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // System reg
+ space.install_read_handler (0xff00, 0xffff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xff00, 0xffff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ }
+ break;
+ case 0x0F :
+ {
+ // RAM
+ space.install_read_bank (0x0000, 0x3fff, "bank1");
+ space.install_write_bank(0x0000, 0x3fff, "bank2");
+ membank("bank1")->set_base(ram + 0x0000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // Video RAM
+ space.install_read_handler (0x4000, 0x7fff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0x4000, 0x7fff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ // RAM
+ space.install_read_bank (0x8000, 0xfdff, "bank3");
+ space.install_write_bank(0x8000, 0xfdff, "bank4");
+ membank("bank3")->set_base(ram + 0x8000);
+ membank("bank4")->set_base(ram + 0x8000);
+ // Devices
+ space.install_read_handler (0xfe00, 0xfeff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfe00, 0xfeff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // System reg
+ space.install_read_handler (0xff00, 0xffff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xff00, 0xffff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ }
+ break;
+ case 0x10 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x5fff, "bank1");
+ space.install_write_bank(0x0000, 0x5fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x6000, 0xf7ff, "bank3");
+ space.install_write_bank(0x6000, 0xf7ff, "bank4");
+ membank("bank3")->set_base(ram + 0x6000);
+ membank("bank4")->set_base(ram + 0x6000);
+ // Keyboard
+ space.install_read_handler (0xf800, 0xf9ff, read8_delegate(FUNC(pk8020_state::keyboard_r),this));
+ space.install_write_bank(0xf800, 0xf9ff, "bank5");
+ membank("bank5")->set_base(ram + 0xf800);
+ // System reg
+ space.install_read_handler (0xfa00, 0xfaff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xfa00, 0xfaff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Devices
+ space.install_read_handler (0xfb00, 0xfbff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfb00, 0xfbff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // Text Video Memory
+ space.install_read_handler (0xfc00, 0xffff, read8_delegate(FUNC(pk8020_state::text_r),this));
+ space.install_write_handler(0xfc00, 0xffff, write8_delegate(FUNC(pk8020_state::text_w),this));
+ }
+ break;
+ case 0x11 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x1fff, "bank1");
+ space.install_write_bank(0x0000, 0x1fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x2000, 0xf7ff, "bank3");
+ space.install_write_bank(0x2000, 0xf7ff, "bank4");
+ membank("bank3")->set_base(ram + 0x2000);
+ membank("bank4")->set_base(ram + 0x2000);
+ // Keyboard
+ space.install_read_handler (0xf800, 0xf9ff, read8_delegate(FUNC(pk8020_state::keyboard_r),this));
+ space.install_write_bank(0xf800, 0xf9ff, "bank5");
+ membank("bank5")->set_base(ram + 0xf800);
+ // System reg
+ space.install_read_handler (0xfa00, 0xfaff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xfa00, 0xfaff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Devices
+ space.install_read_handler (0xfb00, 0xfbff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfb00, 0xfbff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // Text Video Memory
+ space.install_read_handler (0xfc00, 0xffff, read8_delegate(FUNC(pk8020_state::text_r),this));
+ space.install_write_handler(0xfc00, 0xffff, write8_delegate(FUNC(pk8020_state::text_w),this));
+ }
+ break;
+ case 0x12 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x3fff, "bank1");
+ space.install_write_bank(0x0000, 0x3fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x4000, 0xf7ff, "bank3");
+ space.install_write_bank(0x4000, 0xf7ff, "bank4");
+ membank("bank3")->set_base(ram + 0x4000);
+ membank("bank4")->set_base(ram + 0x4000);
+ // Keyboard
+ space.install_read_handler (0xf800, 0xf9ff, read8_delegate(FUNC(pk8020_state::keyboard_r),this));
+ space.install_write_bank(0xf800, 0xf9ff, "bank5");
+ membank("bank5")->set_base(ram + 0xf800);
+ // System reg
+ space.install_read_handler (0xfa00, 0xfaff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xfa00, 0xfaff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Devices
+ space.install_read_handler (0xfb00, 0xfbff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfb00, 0xfbff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // Text Video Memory
+ space.install_read_handler (0xfc00, 0xffff, read8_delegate(FUNC(pk8020_state::text_r),this));
+ space.install_write_handler(0xfc00, 0xffff, write8_delegate(FUNC(pk8020_state::text_w),this));
+ }
+ break;
+ case 0x13 :
+ {
+ // RAM
+ space.install_read_bank (0x0000, 0xf7ff, "bank1");
+ space.install_write_bank(0x0000, 0xf7ff, "bank2");
+ membank("bank1")->set_base(ram + 0x0000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // Keyboard
+ space.install_read_handler (0xf800, 0xf9ff, read8_delegate(FUNC(pk8020_state::keyboard_r),this));
+ space.install_write_bank(0xf800, 0xf9ff, "bank3");
+ membank("bank3")->set_base(ram + 0xf800);
+ // System reg
+ space.install_read_handler (0xfa00, 0xfaff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xfa00, 0xfaff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Devices
+ space.install_read_handler (0xfb00, 0xfbff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfb00, 0xfbff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // Text Video Memory
+ space.install_read_handler (0xfc00, 0xffff, read8_delegate(FUNC(pk8020_state::text_r),this));
+ space.install_write_handler(0xfc00, 0xffff, write8_delegate(FUNC(pk8020_state::text_w),this));
+ }
+ break;
+ case 0x14 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x5fff, "bank1");
+ space.install_write_bank(0x0000, 0x5fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x6000, 0xfdff, "bank3");
+ space.install_write_bank(0x6000, 0xfdff, "bank4");
+ membank("bank3")->set_base(ram + 0x6000);
+ membank("bank4")->set_base(ram + 0x6000);
+ // Devices
+ space.install_read_handler (0xfe00, 0xfeff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfe00, 0xfeff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // System reg
+ space.install_read_handler (0xff00, 0xffff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xff00, 0xffff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ }
+ break;
+ case 0x15 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x1fff, "bank1");
+ space.install_write_bank(0x0000, 0x1fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x2000, 0xfdff, "bank3");
+ space.install_write_bank(0x2000, 0xfdff, "bank4");
+ membank("bank3")->set_base(ram + 0x2000);
+ membank("bank4")->set_base(ram + 0x2000);
+ // Devices
+ space.install_read_handler (0xfe00, 0xfeff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfe00, 0xfeff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // System reg
+ space.install_read_handler (0xff00, 0xffff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xff00, 0xffff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ }
+ break;
+ case 0x16 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x3fff, "bank1");
+ space.install_write_bank(0x0000, 0x3fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x4000, 0xfdff, "bank3");
+ space.install_write_bank(0x4000, 0xfdff, "bank4");
+ membank("bank3")->set_base(ram + 0x4000);
+ membank("bank4")->set_base(ram + 0x4000);
+ // Devices
+ space.install_read_handler (0xfe00, 0xfeff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfe00, 0xfeff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // System reg
+ space.install_read_handler (0xff00, 0xffff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xff00, 0xffff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ }
+ break;
+ case 0x17 :
+ {
+ // RAM
+ space.install_read_bank (0x0000, 0xfdff, "bank1");
+ space.install_write_bank(0x0000, 0xfdff, "bank2");
+ membank("bank1")->set_base(ram);
+ membank("bank2")->set_base(ram);
+ // Devices
+ space.install_read_handler (0xfe00, 0xfeff, read8_delegate(FUNC(pk8020_state::devices_r),this));
+ space.install_write_handler(0xfe00, 0xfeff, write8_delegate(FUNC(pk8020_state::devices_w),this));
+ // System reg
+ space.install_read_handler (0xff00, 0xffff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xff00, 0xffff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ }
+ break;
+ case 0x18 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x5fff, "bank1");
+ space.install_write_bank(0x0000, 0x5fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x6000, 0xbeff, "bank3");
+ space.install_write_bank(0x6000, 0xbeff, "bank4");
+ membank("bank3")->set_base(ram + 0x6000);
+ membank("bank4")->set_base(ram + 0x6000);
+ // System reg
+ space.install_read_handler (0xbf00, 0xbfff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xbf00, 0xbfff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+ case 0x19 :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x1fff, "bank1");
+ space.install_write_bank(0x0000, 0x1fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x2000, 0xbeff, "bank3");
+ space.install_write_bank(0x2000, 0xbeff, "bank4");
+ membank("bank3")->set_base(ram + 0x2000);
+ membank("bank4")->set_base(ram + 0x2000);
+ // System reg
+ space.install_read_handler (0xbf00, 0xbfff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xbf00, 0xbfff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+ case 0x1A :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x3fff, "bank1");
+ space.install_write_bank(0x0000, 0x3fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x4000, 0xbeff, "bank3");
+ space.install_write_bank(0x4000, 0xbeff, "bank4");
+ membank("bank3")->set_base(ram + 0x4000);
+ membank("bank4")->set_base(ram + 0x4000);
+ // System reg
+ space.install_read_handler (0xbf00, 0xbfff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xbf00, 0xbfff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+ case 0x1B :
+ {
+ // RAM
+ space.install_read_bank (0x0000, 0xbeff, "bank1");
+ space.install_write_bank(0x0000, 0xbeff, "bank2");
+ membank("bank1")->set_base(ram);
+ membank("bank2")->set_base(ram);
+ // System reg
+ space.install_read_handler (0xbf00, 0xbfff, read8_delegate(FUNC(pk8020_state::sysreg_r),this));
+ space.install_write_handler(0xbf00, 0xbfff, write8_delegate(FUNC(pk8020_state::sysreg_w),this));
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+ case 0x1C :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x5fff, "bank1");
+ space.install_write_bank(0x0000, 0x5fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x6000, 0xbfff, "bank3");
+ space.install_write_bank(0x6000, 0xbfff, "bank4");
+ membank("bank3")->set_base(ram + 0x6000);
+ membank("bank4")->set_base(ram + 0x6000);
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+ case 0x1D :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x1fff, "bank1");
+ space.install_write_bank(0x0000, 0x1fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x2000, 0xbfff, "bank3");
+ space.install_write_bank(0x2000, 0xbfff, "bank4");
+ membank("bank3")->set_base(ram + 0x2000);
+ membank("bank4")->set_base(ram + 0x2000);
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+ case 0x1E :
+ {
+ // ROM
+ space.install_read_bank (0x0000, 0x3fff, "bank1");
+ space.install_write_bank(0x0000, 0x3fff, "bank2");
+ membank("bank1")->set_base(mem + 0x10000);
+ membank("bank2")->set_base(ram + 0x0000);
+ // RAM
+ space.install_read_bank (0x4000, 0xbfff, "bank3");
+ space.install_write_bank(0x4000, 0xbfff, "bank4");
+ membank("bank3")->set_base(ram + 0x4000);
+ membank("bank4")->set_base(ram + 0x4000);
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+ case 0x1F :
+ {
+ // RAM
+ space.install_read_bank (0x0000, 0xbfff, "bank1");
+ space.install_write_bank(0x0000, 0xbfff, "bank2");
+ membank("bank1")->set_base(ram);
+ membank("bank2")->set_base(ram);
+ // Video RAM
+ space.install_read_handler (0xc000, 0xffff, read8_delegate(FUNC(pk8020_state::gzu_r),this));
+ space.install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(pk8020_state::gzu_w),this));
+ }
+ break;
+
+ }
+}
+
+READ8_MEMBER(pk8020_state::pk8020_porta_r)
+{
+ return 0xf0 | (m_takt <<1) | (m_text_attr)<<3;
+}
+
+WRITE8_MEMBER(pk8020_state::pk8020_portc_w)
+{
+ m_video_page_access =(data>>6) & 3;
+ m_attr = (data >> 4) & 3;
+ m_wide = (data >> 3) & 1;
+ m_font = (data >> 2) & 1;
+ m_video_page = (data & 3);
+
+
+ m_portc_data = data;
+}
+
+WRITE8_MEMBER(pk8020_state::pk8020_portb_w)
+{
+ floppy_image_device *floppy = NULL;
+
+ // Turn all motors off
+ if (m_floppy0->get_device()) m_floppy0->get_device()->mon_w(1);
+ if (m_floppy1->get_device()) m_floppy1->get_device()->mon_w(1);
+ if (m_floppy2->get_device()) m_floppy2->get_device()->mon_w(1);
+ if (m_floppy3->get_device()) m_floppy3->get_device()->mon_w(1);
+
+ if (BIT(data, 0)) floppy = m_floppy0->get_device();
+ if (BIT(data, 1)) floppy = m_floppy1->get_device();
+ if (BIT(data, 2)) floppy = m_floppy2->get_device();
+ if (BIT(data, 3)) floppy = m_floppy3->get_device();
+
+ m_wd1793->set_floppy(floppy);
+
+ if (floppy)
+ {
+ floppy->mon_w(0);
+ floppy->ss_w(BIT(data, 4));
+ }
+
+ // todo: at least bit 5 and bit 7 is connected to something too...
+}
+
+READ8_MEMBER(pk8020_state::pk8020_portc_r)
+{
+ return m_portc_data;
+}
+
+
+WRITE8_MEMBER(pk8020_state::pk8020_2_portc_w)
+{
+ m_sound_gate = BIT(data,3);
+
+ m_speaker->level_w(m_sound_gate ? m_sound_level : 0);
+}
+
+WRITE_LINE_MEMBER(pk8020_state::pk8020_pit_out0)
+{
+ m_sound_level = state;
+
+ m_speaker->level_w(m_sound_gate ? m_sound_level : 0);
+}
+
+
+WRITE_LINE_MEMBER(pk8020_state::pk8020_pit_out1)
+{
+}
+
+
+void pk8020_state::machine_start()
+{
+ static const char *const keynames[] = {
+ "LINE0", "LINE1", "LINE2", "LINE3", "LINE4", "LINE5", "LINE6", "LINE7",
+ "LINE8", "LINE9", "LINE10", "LINE11", "LINE12", "LINE13", "LINE14", "LINE15"
+ };
+
+ for ( int i = 0; i < 16; i++ )
+ {
+ m_io_port[i] = ioport(keynames[i]);
+ }
+}
+
+void pk8020_state::machine_reset()
+{
+ pk8020_set_bank(0);
+
+ m_sound_gate = 0;
+ m_sound_level = 0;
+}
+
+INTERRUPT_GEN_MEMBER(pk8020_state::pk8020_interrupt)
+{
+ m_takt ^= 1;
+ m_pic8259->ir4_w(1);
+}