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Diffstat (limited to 'src/mess/drivers/excali64.c')
-rw-r--r--src/mess/drivers/excali64.c97
1 files changed, 61 insertions, 36 deletions
diff --git a/src/mess/drivers/excali64.c b/src/mess/drivers/excali64.c
index 542bd83831b..ea6b6968855 100644
--- a/src/mess/drivers/excali64.c
+++ b/src/mess/drivers/excali64.c
@@ -12,18 +12,22 @@ We have Basic 1.1. Other known versions are 1.01, 2.1
There are 2 versions of the colour prom, which have different palettes.
We have the later version.
-Control W then Enter will switch between 40 and 80 characters per line.
+Notes:
+- Control W then Enter will switch between 40 and 80 characters per line.
+- Control V turns cursor on
+- Graphics commands such as LINE, CIRCLE, HGRCLS, HGRSET etc only work with disk basic
ToDo:
- Colours are approximate.
-- Disk controller
-- Graphics commands such as LINE and CIRCLE produce a syntax error.
-- Some commands such as HGRCLS are missing from the rom. Perhaps we need a later version?
+- Issues with bitmap graphics
+- Disk controller, works with old wd17xx but crashes on new wd.
+- Hardware supports 8 and 5.25 inch floppies, but we only support 5.25 as this
+ is the only software that exists.
- The schematic shows the audio counter connected to 2MHz, but this produces
sounds that are too high. Connected to 1MHz for now.
- Serial
- Parallel / Centronics
-- Need software
+- Need more software
- Pasting can sometimes drop a character.
****************************************************************************/
@@ -44,6 +48,8 @@ ToDo:
#include "sound/wave.h"
#include "sound/speaker.h"
#include "machine/z80dma.h"
+#include "machine/rescap.h"
+#include "machine/74123.h"
#if NEWFDC
#include "machine/wd_fdc.h"
#include "formats/excali64_dsk.h"
@@ -64,6 +70,7 @@ public:
, m_crtc(*this, "crtc")
, m_io_keyboard(*this, "KEY")
, m_dma(*this, "dma")
+ , m_u12(*this, "u12")
, m_fdc(*this, "fdc")
#if NEWFDC
, m_floppy0(*this, "fdc:0")
@@ -92,6 +99,7 @@ public:
MC6845_UPDATE_ROW(update_row);
DECLARE_WRITE_LINE_MEMBER(crtc_de);
DECLARE_WRITE_LINE_MEMBER(crtc_vs);
+ DECLARE_WRITE8_MEMBER(motor_w);
DECLARE_MACHINE_RESET(excali64);
required_device<palette_device> m_palette;
@@ -103,11 +111,13 @@ private:
UINT8 m_kbdrow;
bool m_crtc_vs;
bool m_crtc_de;
+ bool m_motor;
required_device<cpu_device> m_maincpu;
required_device<cassette_image_device> m_cass;
required_device<mc6845_device> m_crtc;
required_ioport_array<8> m_io_keyboard;
required_device<z80dma_device> m_dma;
+ required_device<ttl74123_device> m_u12;
#if NEWFDC
required_device<wd2793_t> m_fdc;
required_device<floppy_connector> m_floppy0;
@@ -256,14 +266,27 @@ static const floppy_interface excali64_floppy_interface =
};
#endif
+// pulses from port E4 bit 5 restart the 74123. After 3.6 secs without a pulse, the motor gets turned off.
+WRITE8_MEMBER( excali64_state::motor_w )
+{
+ m_motor = BIT(data, 0);
+#if NEWFDC
+ m_floppy0->get_device()->mon_w(!m_motor);
+#else
+ //const char *floppy_tags[4] = { FLOPPY_0, FLOPPY_1, FLOPPY_2, FLOPPY_3 };
+ legacy_floppy_image_device *flop = subdevice<legacy_floppy_image_device>(FLOPPY_0);
+ flop->floppy_mon_w(!m_motor); // motor on
+ //flop->floppy_drive_set_ready_state(1, 0); // this is commented out in flopdrv.c, so does nothing
+#endif
+}
+
READ8_MEMBER( excali64_state::porte8_r )
{
- return 0xff;
+ return 0xfc | (UINT8)m_motor;
}
WRITE8_MEMBER( excali64_state::porte4_w )
{
-//printf("%X ",data);
#if NEWFDC
floppy_image_device *floppy = NULL;
if (BIT(data, 0)) floppy = m_floppy0->get_device();
@@ -272,32 +295,24 @@ WRITE8_MEMBER( excali64_state::porte4_w )
if (floppy)
floppy->ss_w(BIT(data, 4));
#else
- UINT8 i;
- for (i = 0; i < 4; i++)
- {
- if BIT(data, i)
- {
- m_fdc->set_drive(i);
- break;
- }
- }
- //if (data & 0x01) m_fdc->set_drive(0);
- //if (data & 0x02) m_fdc->set_drive(1);
- //if (data & 0x04) m_fdc->set_drive(2);
- //if (data & 0x08) m_fdc->set_drive(3);
- //if (data & 0x10) m_fdc->set_side((data & 0x10) >> 4);
- const char *floppy_tags[4] = { FLOPPY_0, FLOPPY_1, FLOPPY_2, FLOPPY_3 };
+ //UINT8 i;
+ //for (i = 0; i < 4; i++)
+ //{
+ // if BIT(data, i)
+ // {
+ // m_fdc->set_drive(i);
+ // break;
+ // }
+ //}
+ if BIT(data, 0) m_fdc->set_drive(0);
+ //if BIT(data, 1) m_fdc->set_drive(1);
+ //if BIT(data, 2) m_fdc->set_drive(2);
+ //if BIT(data, 3) m_fdc->set_drive(3);
+ m_fdc->set_side(BIT(data, 4));
m_fdc->dden_w(1);//!BIT(data, 6)); // we want double density
- //if ((data & 0x04) == 0) // reset
- //m_fdc->reset();
-
- // bit 3 connected to pin 23 "HRDY" of FDC
- // TEMP HACK, FDD motor and RDY FDC pin controlled by HLD pin of FDC
- legacy_floppy_image_device *flop = subdevice<legacy_floppy_image_device>(floppy_tags[i]);
- flop->floppy_mon_w(0); // motor on
- flop->floppy_drive_set_ready_state(1, 0);
#endif
+ m_u12->b_w(space,offset, BIT(data, 5));
}
WRITE8_MEMBER( excali64_state::portec_w )
@@ -624,15 +639,16 @@ static MACHINE_CONFIG_START( excali64, excali64_state )
MCFG_CASSETTE_ADD( "cassette" )
#if NEWFDC
MCFG_WD2793x_ADD("fdc", XTAL_16MHz / 16)
+ MCFG_WD_FDC_FORCE_READY
+ MCFG_WD_FDC_DRQ_CALLBACK(DEVWRITELINE("dma", z80dma_device, rdy_w))
MCFG_FLOPPY_DRIVE_ADD("fdc:0", excali64_floppies, "525dd", floppy_image_device::default_floppy_formats)// excali64_state::floppy_formats)
- MCFG_FLOPPY_DRIVE_ADD("fdc:1", excali64_floppies, "525dd", floppy_image_device::default_floppy_formats)
+ //MCFG_FLOPPY_DRIVE_ADD("fdc:1", excali64_floppies, "525dd", floppy_image_device::default_floppy_formats)
#else
MCFG_DEVICE_ADD("fdc", WD2793, 0)
- MCFG_WD17XX_DEFAULT_DRIVE4_TAGS
- //MCFG_WD17XX_INTRQ_CALLBACK(WRITELINE(nascom1_state, nascom2_fdc_intrq_w))
- //MCFG_WD17XX_DRQ_CALLBACK(WRITELINE(nascom1_state, nascom2_fdc_drq_w))
- //MCFG_WD17XX_DDEN_CALLBACK(VCC)
- MCFG_LEGACY_FLOPPY_4_DRIVES_ADD(excali64_floppy_interface)
+ MCFG_WD17XX_DEFAULT_DRIVE1_TAGS
+ MCFG_WD17XX_DRQ_CALLBACK(DEVWRITELINE("dma", z80dma_device, rdy_w))
+ MCFG_LEGACY_FLOPPY_DRIVE_ADD(FLOPPY_0, excali64_floppy_interface)
+ //MCFG_LEGACY_FLOPPY_4_DRIVES_ADD(excali64_floppy_interface)
#endif
MCFG_DEVICE_ADD("dma", Z80DMA, XTAL_16MHz/4)
MCFG_Z80DMA_OUT_BUSREQ_CB(WRITELINE(excali64_state, busreq_w))
@@ -640,6 +656,15 @@ static MACHINE_CONFIG_START( excali64, excali64_state )
MCFG_Z80DMA_OUT_MREQ_CB(WRITE8(excali64_state, memory_write_byte))
MCFG_Z80DMA_IN_IORQ_CB(READ8(excali64_state, io_read_byte))
MCFG_Z80DMA_OUT_IORQ_CB(WRITE8(excali64_state, io_write_byte))
+
+ MCFG_DEVICE_ADD("u12", TTL74123, 0)
+ MCFG_TTL74123_CONNECTION_TYPE(TTL74123_GROUNDED) /* the hook up type (no idea what this means */
+ MCFG_TTL74123_RESISTOR_VALUE(RES_K(100)) /* resistor connected between RCext & 5v */
+ MCFG_TTL74123_CAPACITOR_VALUE(CAP_U(100)) /* capacitor connected between Cext and RCext */
+ MCFG_TTL74123_A_PIN_VALUE(0) /* A pin - grounded */
+ MCFG_TTL74123_B_PIN_VALUE(1) /* B pin - driven by port e4 bit 5 */
+ MCFG_TTL74123_CLEAR_PIN_VALUE(1) /* Clear pin - pulled high */
+ MCFG_TTL74123_OUTPUT_CHANGED_CB(WRITE8(excali64_state, motor_w))
MACHINE_CONFIG_END
/* ROM definition */